0800-01-01-.07 - EXCEPTIONS TO ADOPTION OF FEDERAL STANDARDS IN 29 CFR PART 1910

0800-01-01-.07. EXCEPTIONS TO ADOPTION OF FEDERAL STANDARDS IN 29 CFR PART 1910

(1) The Commissioner of Labor and Workforce Development does not adopt the following federal occupational safety and health standards:

(a) 29 CFR 1910.1 Purpose and scope.

(b) 29 CFR 1910.2 Definitions.

(c) 29 CFR 1910.3 Petitions for the issuance, amendment, or repeal of a standard.

(d) 29 CFR 1910.4 Amendments to this part.

(e) 29 CFR 1910.15 Shipyard employment.

(f) 29 CFR 1910.16 Longshoring and marine terminals.

(2) In lieu of the current federal occupational safety and health standards codified in Title 29, Code of Federal Regulations, Part 1910, Rule 0800-01-01-.06 of this chapter, or the absence thereof because of repeal or revocation, the Commissioner of Labor and Workforce Development adopts the standards limiting exposure to air contaminants as contained in subparagraph (b) of this rule. The information contained therein was compiled and adopted from the following federal occupational safety and health standards as published in the Federal Register in the volume and on the page(s) indicated.

(a) 29 CFR 1910.1000 at 54 FR 2920-2983 and the following corrections and amendments thereto:

1. 29 CFR 1910.1000 at 54 FR 28054-28061.

2. 29 CFR 1910.1000 at 54 FR 36767-36768.

3. 29 CFR 1910.1000 at 54 FR 41244.

4. 29 CFR 1910.1000 at 54 FR 47513.

5. 29 CFR 1910.1000 at 54 FR 50372-50373.

6. 29 CFR 1910.1000 at 55 FR 3724.

7. 29 CFR 1910.1000 at 55 FR 12819.

8. 29 CFR 1910.1000 at 55 FR 19259.

9. 29 CFR 1910.1000 at 55 FR 46950.

10. 29 CFR 1910.1000 at 57 FR 29204-29206.

11. 29 CFR 1910.1000 at 57 FR 42388-42389.

(b) Subpart Z - Toxic and Hazardous Substances 29 CFR 1910.1000 - Air Contaminants as adopted by subparagraph (a) of this rule reads as follows: An employee's exposure to any substance listed in Table Z-1-A shall be limited in accordance with the following requirements:

1. Limits for Air Contaminants Columns. An employee's exposure to any substance listed in Table Z-1-A shall not exceed the Time Weighted Average (TWA), Short Term Exposure Limit (STEL) and Ceiling Limit specified for that substance in Table Z-1-A.

2. Skin Designation. To prevent or reduce skin absorption, an employee's skin exposure to substances listed in Table Z-1-A with an "X" in the Skin Designation column following the substance name shall be prevented or reduced to the extent necessary in the circumstances through the use of gloves, coveralls, goggles, or other appropriate personal protective equipment, engineering controls or work practices.

3. Definitions. The following definitions are applicable to the limits for air contaminants columns of Table Z-1-A:

(i) Time weighted average (TWA) is the employee's average airborne exposure in any 8-hour work shift of a 40-hour work week which shall not be exceeded.

(ii) Short term exposure limit (STEL) is the employee's 15-minute time weighted average exposure which shall not be exceeded at any time during the work day unless another time limit is specified in a parenthetical notation below the limit. If another time period is specified, the time weighted average exposure over that time period shall not be exceeded at any time during the working day.

(iii) Ceiling is the employee's exposure which shall not be exceeded during any part of the work day. If instantaneous monitoring is not feasible, then the ceiling shall be assessed as a 15-minute time weighted average exposure which shall not be exceeded at any time over a working day.

4. Additional Definition. The terms "substance", "air contaminant", and "material" are equivalent in meaning for 29 CFR 1910.1000.

(c) Computation formulae. The computation formula which shall apply to employee exposure to more than one substance for which 8-hour time weighted averages are listed in Subpart Z of 29 CFR Part 1910 in order to determine whether an employee is exposed over the regulatory limit is as follows:

1. The cumulative exposure for an 8-hour work shift shall be computed as follows: E = (CaTa + CbTb + . . . CnTn) ÷ 8

Where:

E is the equivalent exposure for the working shift. C is the concentration during any period of time T where the concentration remains constant. T is the duration in hours of the exposure at the concentration C.

2. To illustrate the formula prescribed above, assume that Substance A has an 8hour time weighted average limit of 100 ppm noted in Table Z-1-A. Assume that an employee is subject to the following exposure:

Two hours exposure at 150 ppm Two hours exposure at 75 ppm Four hours exposure at 50 ppm

The value of E shall not exceed the 8-hour time weighted average specified in Subpart Z of 29 CFR Part 1910 for the material involved.

Substituting this information in the formula, we have: (2 x 150 + 2 x 75 + 4 x 50) ÷ 8 = 81.25 ppm.

Since 81.25 ppm is less than 100 ppm, the 8-hour time weighted average limit, the exposure is acceptable.

3. In case of a mixture of air contaminants, an employer shall compute the equivalent exposure as follows: Em = (C1 ÷ L1) + (C2 ÷ L2) + . . . (Cn ÷ Ln)

Where:

Em is the equivalent exposure for the mixture. C is the concentration of a particular contaminant. L is the exposure limit for that substance specified in Subpart Z of 29 CFR Part 1910. The value of Em shall not exceed unity (1).

4. To illustrate the formula prescribed above, consider the following exposures:

Substance

Actual concentration of 8 hour exposure (ppm)

8 hr. TWA PEL (ppm)

B

500

1000

C

45

200

D

40

200

Substituting in the formula, we have: Em = 500 ÷ 1000 + 45 ÷

200 + 40 ÷ 200

Em = 0.500 + 0.225 + 0.200

Em = 0.925

Since Em is less than unity (1), the exposure combination is within acceptable limits.

(d) To achieve compliance with subparagraphs (b) and (c) of this rule, administrative or engineering controls must first be determined and implemented whenever feasible. When such controls are not feasible to achieve full compliance, protective equipment or any other protective measures shall be used to keep the exposure of employees to air contaminants within the limits prescribed herein. Any equipment and/or technical measures used for this purpose must be approved for each particular use by a competent industrial hygienist or other technically qualified person. Whenever respirators are used, their use shall comply with 29 CFR 1910.134.

(e) Note: Abbreviations used in Table Z-1-A.

1. As determined from breathing-zone air samples:

(i) ppm - Parts of vapor or gas per million parts of contaminated air by volume at 25 degrees C and 760 torr.

(ii) mg/m3 - Approximate milligrams of substance per cubic meter of air.

(iii) STEL - Short Term Exposure Limit, duration is 15 minutes, unless otherwise noted.

2. CAS No. - Chemical Abstract Service Number, the CAS number is for information only. Enforcement is based on the substance name. For an entry covering more than one metal compound measured as the metal, the CAS number for the metal is given-not the CAS numbers for the individual compounds.

(3) TABLE Z-1-A - Limits For Air Contaminants.

Substance

CAS No.

TWA

STEL

Ceiling

Skin designation

     

ppm

mg/m3

ppm

mg/m3

ppm

mg/m3

  

Acetaldehyde

75-07-0

100

180

150

270

-

-

-

Acetic acid

64-19-7

10

25

-

-

-

-

-

Acetic anhydride

108-24-7

-

-

-

-

5

20

-

Acetone

67-64-1

750

1800

1000

2400

-

-

-

Acetonitrile

75-05-8

40

70

60

105

-

-

-

2-Acetylaminofluorine; see 29 CFR 1910.1003

53-96-3

-

-

-

-

-

-

-

Acetylene dichloride; see 1, 2-Dichloroethylene

                       

Acetylene tetrabromide

79-27-6

1

14

-

-

-

-

-

Acetylsalicylic acid (Asprin)

50-78-2

-

5

-

-

-

-

-

Acrolein

107-02-8

0.1

0.25

0.3

0.8

-

-

-

Acrylamide

79-06-1

-

0.03

-

-

-

-

X

Acrylic acid

79-10-7

10

30

-

-

-

-

X

Acrylonitrile; see 29 CFR 1910.1045

107-13-1

-

-

-

-

-

-

-

Aldrin

309-00-2

-

0.25

-

-

-

-

X

Allyl alcohol

107-18-6

2

5

4

10

-

-

X

Allyl chloride

107-05-1

1

3

2

6

-

-

-

Allyd glycidl either (AGE)

106-92-3

5

22

10

44

-

-

-

Allyl propyl disulfide

2179-59-1

2

12

3

18

-

-

-

alpha-Alumina

1344-28-1

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Aluminum (As al) Metal

7429-90-5

                    

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Pyro powders

-

-

5

-

-

-

-

-

Welding fumes

-

-

5

-

-

-

-

-

Soluble salts

-

-

2

-

-

-

-

-

Alkyls

-

-

2

-

-

-

-

-

4-Aminodiphenyl; see 29 CFR 1910.1003

92-67-1

                    

2-Aminoethanol; see Ethanolamine

                       

2-Aminopyridine

504-29-0

0.5

2

-

-

-

-

-

Amitrole

61-82-5

-

0.2

-

-

-

-

-

Ammonia

7664-41-7

-

-

35

27

-

-

-

Ammonium chloride fume

12125-02-9

-

10

-

20

-

-

-

Ammonium sulfamate

7773-06-0

                    

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

n-Amyl acetate

628-63-7

100

525

-

-

-

-

-

Sec-Amyl acetate

626-38-0

125

650

-

-

-

-

-

Aniline and homologs

62-53-3

2

8

-

-

-

-

X

Anisidine (o-, p-isomers)

29191-52-4

-

0.5

-

-

-

-

X

Antimony and compounds (as Sb)

7440-36-0

-

0.5

-

-

-

-

-

ANTU (alpha Naphthylthiourea)

86-88-4

-

0.3

-

-

-

-

-

Arsenic, organic compounds (as As)

7440-38-2

-

0.5

-

-

-

-

-

Arsenic, inorganic compounds (as As); see 29 CFR 1910.1018

7440-38-2

                    

Arsine

7784-42-1

0.05

0.2

-

-

-

-

-

Asbestos; see 29 CFR 1910.1001 and 29 CFR 1926.1101

Varies

                    

Atrizine

1912-24-9

-

5

-

-

-

-

-

Azinphos-methyl

86-50-0

-

0.2

-

-

-

-

X

Barium, soluble compounds (as Ba)

7440-39-3

-

0.5

-

-

-

-

-

Barium sulfate

7727-43-7

                    

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Benomyl

17804-35-2

                    

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Benzene; see 29 CFR 1910.1028

71-43-2

                    

Industries excluded from 29 CFR 1910.1028 (STEL - 10 minutes)

  

10

-

25

-

50

-

-

Benzidine; see 29 CFR 1910.1003

92-87-5

                    

p-Benzoquinone; see Quinone

                       

Benzo(a)pyrene; see Coal tar pitch volatiles

                       

Benzoyl peroxide

94-36-0

-

5

-

-

-

-

-

Benzyl chloride

100-44-7

1

5

-

-

-

-

-

Beryllium and beryllium Compounds (as Be) (STEL - 30 minutes)

7440-41-7

-

0.002

-

0.005

-

0.025 -

-

Biphenyl; see Diphenyl

                       

Bismuth telluride, Undoped

1304-82-1

                    

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Bismuth telluride, Se-doped

-

-

5

-

-

-

-

-

Borates, tetra, sodium salts

                       

Anhydrous

1330-43-4

-

10

-

-

-

-

-

Decahydrate

1303-96-4

-

10

-

-

-

-

-

Pentahydrate

12179-04-3

-

10

-

-

-

-

-

Boron oxide

1303-86-2

                    

Total dust

-

-

10

-

-

-

-

-

Boron tribromide

10294-33-4

-

-

-

-

1

10

-

Boron trifluoride

7637-07-2

-

-

-

-

1

3

-

Bromacil

314-40-9

1

10

-

-

-

-

-

Bromine

7726-95-6

0.1

0.7

0.3

2

-

-

-

Bromine pentafluoride

7789-30-2

0.1

0.7

-

-

-

-

-

Bromoform

75-25-2

0.5

5

-

-

-

-

X

Butadiene (1, 3-Butadiene) see 29 CFR 1910.1051

106-99-8

                    

Butane

106-97-8

800

1900

-

-

-

-

-

Butanethiol; see Butyl mercaptan

                       

2-Butanone (Methyl ethyl ketone)

78-93-3

200

590

300

885

-

-

-

2-Butoxyethanol

111-76-2

25

120

-

-

-

-

X

n-butyl-acetate

123-86-4

150

710

200

950

-

-

-

Sec-Butyl acetate

105-46-4

200

950

-

-

-

-

-

Tert-Butyl acetate

540-88-5

200

950

-

-

-

-

-

Butyl acrylate

141-32-2

10

55

-

-

-

-

-

n-Butyl alcohol

71-36-3

-

-

-

-

50

150

X

Sec-Butyl alcohol

78-92-2

100

305

-

-

-

-

-

Tert-Butyl alcohol

75-65-0

100

300

150

450

-

-

-

Butylamine

109-73-9

-

-

-

-

5

15

X

Tert-Butyl chromate (as CrO3)

1189-85-1

-

-

-

-

-

0.1

X

n-Butyl glycidyl ether (BGE)

2426-08-6

25

135

-

-

-

-

-

n-Butyl lactate

138-22-7

5

25

-

-

-

-

-

Butyl mercaptan

109-79-5

0.5

1.5

-

-

-

-

-

o-sec-Butylphenol

89-72-5

5

30

-

-

-

-

X

p-tert-Butyltoluene

98-51-1

10

60

20

120

-

-

-

Cadmium fume and dust (as Cd); see 29 CFR 1910.1027

7440-43-9

                    

Calcium carbonate

1317-65-3

                    

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Calcium cyanamide

156-62-7

-

0.5

-

-

-

-

-

Calcuim hydroxide

1305-62-0

     

-

-

-

-

-

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Calcium oxide

1305-78-8

  

5

-

-

-

-

-

Calcium silicate

1344-95-2

                    

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Calcium sulfate

7778-18-9

                    

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Camphor, synthetic

76-22-2

-

2

-

-

-

-

-

Caprolactam

105-60-2

                    

Dust

-

-

1

-

3

-

-

-

Vapor

-

5

20

10

40

-

-

-

Captafol (Difolatan®)

2425-06-1

-

0.1

-

-

-

-

-

Captan

133-06-2

-

5

-

-

-

-

-

Carbaryl (Sevin®)

63-25-2

-

5

-

-

-

-

-

Carbofluran (Furadan®)

1563-66-2

-

0.1

-

-

-

-

-

Carbon black

1333-86-4

-

3.5

-

-

-

-

-

Carbon dioxide

124-38-9

10, 000

18, 000

30, 000

54, 000

-

-

-

Carbon disulfide

75-15-0

4

12

12

36

-

-

X

Carbon monoxide (STEL - 5 minutes)

630-08-0

35

40

200

229

1500

-

-

Carbon tetrabromide

558-13-4

0.1

1.4

0.3

4

-

-

-

Carbon tetrachloride

56-23-5

2

12.6

-

-

-

-

-

Carbonyl fluoride

353-50-4

2

5

5

15

-

-

-

Catechol (Pyrocatechol)

120-80-9

5

20

-

-

-

-

X

Cellulose

9004-34-6

                    

Total Dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Cesium hydroxide

21351-79-1

-

2

-

-

-

-

-

Chlordane

57-74-9

-

0.5

-

-

-

-

X

Chlorinated camphene

8001-35-2

-

0.5

-

1

-

-

X

Chlorinated diphenyl oxide

55720-99-5

-

0.5

-

-

-

-

-

Chlorine

7782-50-5

0.5

1.5

1

3

-

-

-

Chlorine dioxide

10049-04-4

0.1

0.3

0.3

0.9

-

-

-

Chlorine trifluoride

7790-91-2

-

-

-

-

0.1

0.4

-

Chloroacetaldehyde

107-20-0

-

-

-

-

1

3

-

a-Chloroacetophenone (Phenacyl chloride)

532-27-4

0.05

0.3

-

-

-

-

-

Chloroacetyl chloride

79-04-9

0.05

0.2

-

-

-

-

-

Chlorobenzene

108-90-7

75

350

-

-

-

-

-

o-Chlorobenzylidene malononitrile

2698-41-1

-

-

-

-

0.05

0.4

X

Chlorobromomethane

74-97-5

200

1050

-

-

-

-

-

2-Chloro-1, 3-butadiene; see b-Chloroprene

                       

Chlorodifluoromethane

75-45-6

1000

3500

-

-

-

-

-

Chlorodiphenyl (42% Chlorine) (PCB)

53469-21-9

-

1

-

-

-

-

X

Chlorodiphenyl (54% Chlorine) (PCB)

11097-69-1

-

0.5

-

-

-

-

X

1-Chloro, 2, 3-epoxypropane; see Epichlorohydrin

                       

2-Chloroethanol; see Ethylene chlorohydrin

                       

Chloroethylene; see Vinyl chloride

                       

Chloroform (Trichloromethane)

67-66-3

2

9.78

-

-

-

-

-

Bis(Chloromethyl) ether see 29 CFR 1910.1003

542-88-1

                    

Chloromethyl methyl ether; see 29 CFR 1910.1003

107-30-2

                    

1-Chloro-1-nitropropane

600-25-9

2

10

-

-

-

-

-

Chloropentafluoroethane

76-15-3

1000

6320

-

-

-

-

-

Chloropicrin

76-06-2

0.1

0.7

-

-

-

-

-

Beta-Chloroprene

126-99-8

10

35

-

-

-

-

X

o-Chlorostyrene

2039-87-4

50

285

75

428

-

-

-

o-Chlorotoluene

95-49-8

50

250

-

-

-

-

-

2-Chloro-6-trichloro-methpyridine

1929-82-4

                    

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Chlorpyrifos

2921-88-2

-

0.2

-

-

-

-

X

Chromic acid and chromates (as CrO3)

Varies with compound

-

-

-

-

-

0.1

-

Chromium, sol chromic, chromous salts (as Cr)

7440-47-3

-

0.5

-

-

-

-

-

Chromium, metal and insoluble Salts

7440-47-3

-

1

-

-

-

-

-

Chrysene; see Coal tar pitch volatiles

                       

Clopidol

2971-90-6

                    

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Coal dust (less than 5% SiO2) Respirable fraction

-

-

0.2

-

-

-

-

-

Coal dust (greater than or equal to 5% SiO2), Respirable quartz fraction

-

-

0.1

-

-

-

-

-

Coal tar pitch volatiles (benzene soluble fraction), anthrancene, BaP, phenanthrene, acidine, chrysene, pyrene

65966-93-2

-

0.2

-

-

-

-

-

Cobalt metal, dust, and fume (as Co)

7440-48-4

-

0.05

-

-

-

-

-

Cobalt carbonyl (as Co)

10210-68-1

-

0.1

-

-

-

-

-

Cobalt hydrocarbonyl (as Co)

16842-03-8

-

0.1

-

-

-

-

-

Coke oven emissions; see 29 CFR 1910.1029

-

                    

Copper

7440-50-8

-

-

-

-

-

-

-

Fume (as Cu)

-

-

0.1

-

-

-

-

-

Dusts and mists (as Cu)

-

-

1

-

-

-

-

-

Cotton dust (raw)

-

-

1

-

-

-

-

-

This 8-hour TWA applies to respirable dust as measured by a vertical elutriator cotton dust sampler or equivalent instruction. The time-weighted average applies to the cotton waste processing operations of waste recycling (sorting, blending, cleaning and willowing) and garnetting. See also 29 CFR 1910.1043 for cotton dust limits applicable to other sectors.

Crag herbicide (Sesone)

136-78-7

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Cresol, all isomers

1319-77-3

5

22

-

-

-

-

X

Crotonaldehyde

123-73-9; 4170-30-3

2

6

-

-

-

-

-

Crufomate

299-86-5

-

5

-

-

-

-

-

Cumene

98-82-8

50

245

-

-

-

-

X

Cyanamide

420-04-2

-

2

-

-

-

-

-

Cyanides (as CN)

Varies with compound

-

5

-

-

-

-

-

Cyanogen

460-19-5

10

20

-

-

-

-

-

Cyanogen chloride

506-77-4

-

-

-

-

0.3

0.6

-

Cyclohexane

110-82-7

300

1050

-

-

-

-

-

Cyclohexanol

108-93-0

50

200

-

-

-

-

X

Cyclohexanone

108-94-1

25

100

-

-

-

-

X

Cyclohexene

110-83-8

300

1015

-

-

-

-

-

Cyclohexylamine

108-91-8

10

40

-

-

-

-

-

Cyclonite

121-82-4

-

1.5

-

-

-

-

X

Cyclopentadiene

542-92-7

75

200

-

-

-

-

-

Cyclopentane

287-92-3

600

1720

-

-

-

-

-

Cyhexatin

13121-70-5

-

5

-

-

-

-

-

2, 4-D (Dichlorophenoxyacetic acid)

94-75-7

-

10

-

-

-

-

-

Decaborane

17702-41-9

0.05

0.3

0.15

0.9

-

-

X

Demeton (Systox®)

8065-48-3

-

0.1

-

-

-

-

X

Dichlorodiphenyltrichloroethane (DDT)

50-29-3

-

1

-

-

-

-

X

Dichlorvos (DDVP)

62-73-7

-

1

-

-

-

-

X

Diacetone alcohol (4-Hydroxy-4-methyl-2-pentanone)

123-42-2

50

240

-

-

-

-

-

1, 2-Diaminoethane; see Ethylenediamine

                       

Diazinon

333-41-5

-

0.1

-

-

-

-

X

Diazomethane

334-88-3

0.2

0.4

-

-

-

-

-

Diborane

19287-45-7

0.1

0.1

-

-

-

-

-

1, 2-Dibromo-3-chloropropane; see 29 CFR 1910.1044

96-12-8

                    

2-N-Dibutylaminoethanol

102-81-8

2

14

-

-

-

-

-

Dibutyl phosphate

107-66-4

1

5

2

10

-

-

-

Dibutyl phthalate

84-74-2

-

5

-

-

-

-

-

Dichloroacetylene

7572-29-4

-

-

-

-

0.1

0.4

-

o-Dichlorobenzene

95-50-1

-

-

-

-

50

300

-

p-Dichlorobenzene

106-46-7

75

450

110

675

-

-

-

3, 3'-Dichlorobenzidine see 29 CFR 1910.1003

91-94-1

                    

Dichlorodifluoromethane

75-71-8

1000

4950

-

-

-

-

-

1, 3-Dichloro-5, 5-dimethyl hydantion

118-52-5

-

0.2

-

0.4

-

-

-

1, 1-Dichlorothane

75-34-3

100

400

-

-

-

-

-

1, 2-Dichloroethylene

540-59-0

200

790

-

-

-

-

-

Dichloroethyl ether

111-44-4

5

30

10

60

-

-

X

Dichloromethane; see Methylene chloride

                       

Dichloromonofluoro-methane

75-43-4

10

40

-

-

-

-

-

1, 1-Dichloro-1-nitroethane

594-72-9

2

10

-

-

-

-

-

1, 2-Dichloropropane; see Propylenedichloride

                       

1, 3-Dichloropropene

542-75-8

1

5

-

-

-

-

X

2, 2-Dichloropropionic acid

75-99-0

1

6

-

-

-

-

-

Dichlorotetrafluoroethane

76-14-2

1000

7000

-

-

-

-

-

Dicrotophos

141-66-2

-

0.25

-

-

-

-

X

Dicyclopentadiene

77-73-6

5

30

-

-

-

-

-

Dicyclopentadienyl iron

102-54-5

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Dieldrin

60-57-1

-

0.25

-

-

-

-

X

Diethanolamine

111-42-2

3

15

-

-

-

-

-

Diethylamine

109-89-7

10

30

25

75

-

-

-

2-Diethylaminoethanol

100-37-8

10

50

-

-

-

-

X

Diethylene triamine

111-40-0

1

4

-

-

-

-

-

Diethyl ether, see Ethyl ether

                       

Diethyl ketone

96-22-0

200

705

-

-

-

-

-

Diethyl phthalate

84-66-2

-

5

-

-

-

-

-

Difluorodibromomethane

75-61-6

100

860

-

-

-

-

-

Diglycidyl ether (DGE)

2238-07-5

0.1

0.5

-

-

-

-

-

Dihydroxybenzene; see Hydroquinone

                       

Diisobutyl ketone

108-83-8

25

150

-

-

-

-

-

Diisopropylamine

108-18-9

5

20

-

-

-

-

X

4-Dimethylaminoazo-benzene; see 29 CFR 1910.1003

60-11-7

-

-

-

-

-

-

-

Dimethoxymethane; see Methytal

                       

Dimethyl acetamide

127-19-5

10

35

-

-

-

-

X

Dimethylamine

124-40-3

10

18

-

-

-

-

-

Dimethylaminobenzene; see Xylidine

                       

Dimethylaniline (N, N-Dimethyl-analine)

121-69-7

5

25

10

50

-

-

X

Dimethylbenzene; see Xylene

                       

Dimethyl-1, 2-dibromo-2, 2-dichloroethyl phosphate

300-76-5

-

3

-

-

-

-

X

Dimethylformamide

68-12-2

10

30

-

-

-

-

X

2, 6-Dimethyl-4-hepta-none; see Diisobutyl ketone

                       

1, 1-Dimethylhydrazine

57-14-7

0.5

1

-

-

-

-

X

Dimethylphthalate

131-11-3

-

5

-

-

-

-

-

Dimethyl sulfate

77-78-1

0.1

0.5

-

-

-

-

X

Dinitolmide (3, 5-Dinitro-o-toluamide

148-01-6

-

5

-

-

-

-

-

Dinitrobenzene (all isomers) (alpha-)

(meta-) (para-)

528-29- 0 99-65-0

100-25-4

-

1

-

-

-

-

X

Dinitro-o-cresol

534-52-1

-

0.2

-

-

-

-

X

Dinitrotoluene

25321-14-6

-

1.5

-

-

-

-

X

Dioxane (Diethylene dioxide)

123-91-1

25

90

-

-

-

-

X

Dioxathion (Delnav)

78-34-2

-

0.2

-

-

-

-

X

Diphenyl (Biphenyl)

92-52-4

0.2

1

-

-

-

-

-

Diphenylamine

122-39-4

-

10

-

-

-

-

-

Diphenylmethane diisocyanate; see Methylene bisphenyl isocyanate

                       

Dipropylene glycol methyl ether

34590-94-8

100

600

150

900

-

-

X

Diprophy ketone

123-19-3

50

235

-

-

-

-

-

Diquat

85-00-7

-

0.5

-

-

-

-

-

Di-sec octyl phthalate (Di-2-ethylhexyl-phthalate)

117-81-7

-

5

-

10

-

-

-

Disulfiram

97-77-8

-

2

-

-

-

-

-

Disulfoton

298-04-4

-

0.1

-

-

-

-

X

2-6Di-tert-butyl-p-cresol

128-37-0

-

10

-

-

-

-

-

Diuron

330-54-1

-

10

-

-

-

-

-

Divinyl benzene

1321-74-0

10

50

-

-

-

-

-

Emery

12415-34-8

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Endosulfan

115-29-7

-

0.1

-

-

-

-

X

Endrin

72-20-8

-

0.1

-

-

-

-

X

Epichlorohdrin

106-89-8

2

8

-

-

-

-

X

EPN

2104-64-5

-

0.5

-

-

-

-

X

1, 2-epoxypropane; see Propylene oxide

                       

2-3-Epoxy-1-propanol; see Glydicol

                       

Ethanethiol; see Ethy mercaptan

                       

Ethanolamine

141-43-5

3

8

6

15

-

-

-

Ethion

563-12-2

-

0.4

-

-

-

-

X

2-Ethoxyethanol

110-80-5

200

740

-

-

-

-

X

2-Ethoxyethyl acetate (Cellosolve acetate)

111-15-9

100

540

-

-

-

-

X

Ethyl acetate

141-78-6

400

1400

-

-

-

-

-

Ethyl acrylate

140-88-5

5

20

25

100

-

-

X

Ethyl alcohol (Ethonal)

64-17-5

1000

1900

-

-

-

-

-

Ethylamine

75-04-7

10

18

-

-

-

-

-

Ethyl amyl ketone (5-Methyl-3-heptanone)

541-85-5

25

130

-

-

-

-

-

Ethyl benzene

100-41-4

100

435

125

545

-

-

-

Ethyl bromide

74-96-4

200

890

250

1110

-

-

-

Ethyl butyl ketone (3-Heptanone)

106-35-4

50

230

-

-

-

-

-

Ethyl chloride

75-00-3

1000

2600

-

-

-

-

-

Ethyl ether

60-29-7

400

1200

500

1500

-

-

-

Ethyl formate

109-94-4

100

300

-

-

-

-

-

Ethyl mercaptan

75-08-1

0.5

1

-

-

-

-

-

Ethyl silicate

78-10-4

10

85

-

-

-

-

-

Ethylene chlorohydrin

107-07-3

-

-

-

-

1

3

X

Ethylenediamine

107-15-3

10

25

-

-

-

-

-

Ethylene dibromide (STEL - 5 minutes)

106-93-4

20

-

-

30

-

50

-

Ethylene dichloride

107-06-2

1

4

2

8

-

-

-

Ethylene glycol

107-21-1

-

-

-

-

50

125

-

Ethylene glycol dinitrate

628-96-6

-

-

-

0.1

-

-

X

Ethylene glycol methyl acetate; see Methyl cellosolve acetate

                       

Ethyleneimine; see 29 CFR 1910.1003

151-56-4

                    

Ethylene oxide; see 29 CFR 1910.1047

75-21-8

                    

Ethylidene chloride; see 1, 1-Dichloroethane

                       

Ethylidene norbormene

16219-75-3

-

-

-

-

5

25

-

Nethylmorpholine

100-74-3

5

23

-

-

-

-

X

Fenamiphos

22224-92-6

-

0.1

-

-

-

-

X

Fensulfothion (Dasanit)

115-90-2

-

0.1

-

-

-

-

-

Fenthion

55-38-9

-

0.2

-

-

-

-

X

Ferbam

14484-64-1

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Ferrovanadium dust

12604-58-9

-

1

-

3

-

-

-

Fluorides (as F)

Varies with compound

-

2.5

-

-

-

-

-

Fluorine

7782-41-4

0.1

0.2

-

-

-

-

-

Fluorotrichloromethane (Trichlorofluoromethane)

75-69-4

-

-

-

-

1000

5600

-

Fonofos

944-22-9

-

0.1

-

-

-

-

X

Formaldehyde; see 29 CFR 1910.1048

                       

Formamide

75-12-7

20

30

30

45

-

-

-

Formic acid

64-18-6

5

9

-

-

-

-

-

Furfural

98-01-1

2

8

-

-

-

-

X

Furfuryl alcohol

98-00-0

10

40

15

60

-

-

X

Gasoline

8006-61-9

300

900

500

1500

-

-

-

Bermanium tetrahydride

7782-65-2

0.2

0.6

-

-

-

-

-

Glutaraldehyde

111-30-8

-

-

-

-

0.2

0.8

-

Glycerin (mist)

56-81-5

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Glycidol

556-52-5

25

75

-

-

-

-

-

Glycol monoethyl ether see 2-Ethoxyethanol

                       

Grain dust (oat, wheat, barley)

-

-

10

-

-

-

-

-

Graphite, natural respirable dust

7782-42-5

-

2.5

-

-

-

-

-

Graphite, synthetic

-

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Guthion®, see Azinphos methyl

                       

Gypsum

13397-24-5

                    

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Hafnium

7440-58-6

-

0.5

-

-

-

-

-

Heptachlor

76-44-8

-

0.5

-

-

-

-

X

Heptane (n-Heptane)

142-82-5

400

1600

500

2000

-

-

-

Hexaclorobutadiene

87-68-3

0.02

0.24

-

-

-

-

-

Hexachlorocyclo-pentadiene

77-47-4

0.01

0.1

-

-

-

-

-

Hexacloroethane

67-72-1

1

10

-

-

-

-

X

Hexachloronapthalene

1335-87-1

-

0.2

-

-

-

-

X

Hexafluoroacetone

684-16-2

0.1

0.7

-

-

-

-

X

n-Hexane

110-54-3

50

180

-

-

-

-

-

Hexane isomers

Varies with compound

500

1800

1000

3600

-

-

-

2-Hexanone (Methyl n-butyl ketone)

591-78-6

5

20

-

-

-

-

-

Hexone (Methyl isobutyl ketone)

108-10-1

50

205

75

300

-

-

  

sec-Hexyl acetate

108-84-9

50-

300

-

-

-

-

-

Hexylene glycol

107-41-5

-

-

-

-

25

125

-

Hydrazine

302-01-2

0.2

0.1

-

-

-

-

X

Hydrogenated terphenyls

61788-32-7

0.5

5

-

-

-

-

-

Hydrogen bromide

10035-10-6

-

-

-

-

3

10

-

Hydrogen chloride

7647-01-0

-

-

-

-

5

7

-

Hydrogen cyanide

74-90-8

-

-

4.7

5

-

-

X

Hydrogen fluoride (as F)

7664-39-3

3

-

6

-

-

-

-

Hydrogen peroxide

7722-84-1

1

1.4

-

-

-

-

-

Hydrogen selenide (as Se)

7783-07-5

0.05

0.2

-

-

-

-

-

Hydrogen sulfide

7783-06-4

10

14

15

21

-

-

-

Hydroquinone

123-31-9

-

2

-

-

-

-

-

2-Hydroxypropyl acrylate

999-61-1

0.5

3

-

-

-

-

X

Indene

95-13-6

10

45

-

-

-

-

-

Indium and compounds (as in)

7440-74-6

-

0.1

-

-

-

-

-

Iodine

7553-56-2

-

-

-

-

0.1

1

-

Iodoform

75-47-8

0.6

10

-

-

-

-

-

Iron oxide fume

1309-37-1

-

10

-

-

-

-

-

Iron pentacarbonyl (as Fe)

13463-40-6

0.1

0.8

0.2

1.6

-

-

-

Iron salts (soluble) (as Fe)

Varies with compound

-

1

-

-

-

-

-

Isoamyl acetate

123-92-2

100

525

-

-

-

-

-

Isoamyl alcohol (primary and secondary)

123-51-3

100

360

125

450

-

-

-

Isobutyl acetate

110-19-0

150

700

-

-

-

-

-

Isobutyl alcohol

78-83-1

50

150

-

-

-

-

-

Isooctyl alcohol

26952-21-6

50

270

-

-

-

-

X

Isophorone

78-59-1

4

23

-

-

-

-

-

Isophorone diisocyanate

4098-71-9

0.005

-

0.02

-

-

-

X

2-Isopropoxyethanol

109-59-1

25

105

-

-

-

-

-

Isopropyl acetate

108-21-4

250

950

310

1185

-

-

-

Isopropyl alcohol

67-63-0

400

980

500

1225

-

-

-

Isopropylamine

75-31-0

5

12

10

24

-

-

-

N-isopropylaniline

768-52-5

2

10

-

-

-

-

X

Isopropyl ether

108-20-3

500

2100

-

-

-

-

-

Isopropyl glycidyl ether (IGE)

4016-14-2

50

240

75

360

-

-

-

Kaolin

                       

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Ketene

463-51-4

0.5

0.9

1.5

3

-

-

-

Lead inorganic (as Pb); see 29 CFR 1910.1025

7439-92-1

                    

Limestone

1317-65-3

                    

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Lindane

58-89-9

-

0.5

-

-

-

-

X

Lithium hydride

7580-67-8

-

0.025

-

-

-

-

-

L.P.G. (liquefied petroleum gas)

68476-85-7

1000

1800

-

-

-

-

-

Magnesite

546-93-0

-

-

-

-

-

-

-

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Magnesium oxide fume

1309-48-4

-

-

-

-

-

-

-

Total particulate

-

-

10

-

-

-

-

-

Malathion

121-75-5

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

X

Maleic anhydride

108-31-6

0.25

1

-

-

-

-

-

Manganese compounds (as Mn)

7439-96-5

-

-

-

-

-

5

-

Manganese fume (as Mn)

7439-96-5

-

1

-

3

-

-

-

Manganese cyclopenta-dienyl tricarbonyl (as Mn)

12079-65-1

-

0.1

-

-

-

-

X

Manganese tetroxide (as Mn)

1317-35-7

-

1

-

-

-

-

-

Marble

1317-65-3

-

-

-

-

-

-

-

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Mercury (aryl and inorganic) (as Hg)

7439-97-6

-

-

-

-

-

0.1

X

Mercury (organo) alkyl compounds (as Hg)

7439-97-6

-

0.01

-

0.03

-

-

X

Mercury (vapor) (as Hg)

7439-97-6

-

0.05

-

-

-

-

X

Mesityl oxide

141-79-7

15

60

25

100

-

-

-

Methacrylic acid

79-41-4

20

70

-

-

-

-

X

Methanethiol; see Methyl mercapan

                       

Methomyl (Lannate)

16752-77-5

-

2.5

-

-

-

-

-

Methoxychlor

72-43-5

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

2-Methoxyethanol; see Methyl cellosolve

                       

4-Methoxyphenol

150-76-5

-

5

-

-

-

-

-

Methyl acetate

79-20-9

200

610

250

760

-

-

-

Methyl acetylene (Propyne)

74-99-7

1000

1650

-

-

-

-

-

Methyl acetylene-propadiene mixture (MAPP)

-

1000

1800

1250

2250

-

-

-

Methyl acrylate

96-33-3

10

35

-

-

-

-

X

Methylacrylonitrile

126-98-7

1

3

-

-

-

-

X

Methylal (Dimethoxy-methane)

109-87-5

100

3100

-

-

-

-

-

Methyl alcohol

67-56-1

200

260

250

325

-

-

X

Methylamine

74-89-5

10

12

-

-

-

-

-

Methyl amyl alcohol; see Methyl isobutyl carbinol

                       

Methyl n-amyl ketone

110-43-0

100

465

-

-

-

-

-

Methyl bromide

74-83-9

5

20

-

-

-

-

X

Methyl butyl ketone; see 2-Hexanone

                       

Methyl cellosolve (2-Methoxyethanol)

109-86-4

25

80

-

-

-

-

X

Methyl cellosolve acetate (2-Methoxyethyl acetate)

110-49-6

25

120

-

-

-

-

X

Methyl chloride

74-87-3

50

105

100

210

-

-

-

Methyl chloroform (1, 1, 1-Trichloroethane)

71-55-6

350

1900

450

2450

-

-

-

Methyl 2-cyanoacrylate

137-05-3

2

8

4

16

-

-

-

Methyl cyclohexane

108-87-2

400

1600

-

-

-

-

-

Methylcyclohexanol

25639-42-3

50

235

-

-

-

-

-

o-Methylcyclohexanone

583-60-8

50

230

75

345

-

-

X

Methylcyclopentadienyl manganese tricarbonyl (as Mn)

12106-13-3

-

0.2

-

-

-

-

X

Methyl demeton

8022-00-2

-

0.5

-

-

-

-

X

4, 4'-Methylene bis (2-chloroaniline (MBOCA)

101-14-4

0.02

0.22

-

-

-

-

X

Methylene bis (4-cyclohexy-isocyanate)

5124-30-1

-

-

-

-

0.01

0.11

X

Methylene chloride; see 29 CFR 1910.1052

75-09-2

-

-

-

-

-

-

-

Methylenedianiline; see 29 CFR 1910.1050

                       

Methyl ethyl ketone peroxide (MEKP)

1338-23-4

-

-

-

-

0.7

5

-

Methyl formate

107-31-3

100

250

150

375

-

-

-

Methyl hydrazine (monomethyl hydrazine)

60-34-4

-

-

-

-

0.2

0.35

X

Methyl iodide

74-88-4

2

10

-

-

-

-

X

Methyl isoamyl ketone

110-12-3

50

240

-

-

-

-

-

Methyl isobutyl carbinol

108-11-2

25

100

40

165

-

-

X

Methyl isobutyl ketone; see Hexone

                       

Methyl isocyanate

624-83-9

0.02

0.05

-

-

-

-

X

Methyl isopropyl ketone

563-80-4

200

705

-

-

-

-

-

Methyl mercaptan

74-93-1

0.5

1

-

-

-

-

-

Methyl methacrylate

80-62-6

100

410

-

-

-

-

-

Methyl parathion

298-00-0

-

0.2

-

-

-

-

X

Methyl propyl ketone; see 2-Pentanone

                       

Methyl silicate

681-84-5

1

6

-

-

-

-

-

alpha-Methyl styrene

98-83-9

50

240

100

485

-

-

-

Methylene disphenyl isocyanate (MDI)

101-68-8

-

-

-

-

0.02

0.2

-

Metribuzin

21087-64-9

-

5

-

-

-

-

-

Mica; see Silicates

                       

Molybdenum (as Mo)

7439-98-7

                    

Soluble compounds

-

-

5

-

-

-

-

-

Insoluble compounds

                       

Total dust

-

-

10

-

-

-

-

-

Monocrotophos (Azodrin®)

6923-22-4

-

0.25

-

-

-

-

-

Monomethyl aniline

100-61-8

0.5

2

-

-

-

-

X

Morpholine

110-91-8

20

70

30

105

-

-

X

Naphtha (Coal tar)

8030-30-6

100

400

-

-

-

-

-

Naphthalene

91-20-3

10

50

15

75

-

-

-

alpha-Naphthylamine; see 29 CFR 1910.1003

134-32-7

                    

beta-Naphthylamine; see 29 CFR 1910.1003

91-59-8

                    

Nickel carbonyl (as Ni)

13463-39-3

0.001

0.007

-

-

-

-

-

Nickel, metal and insoluble compounds (as Ni)

7440-02-0

-

1

-

-

-

-

-

Nickel, soluble compounds (as Ni)

7440-02-0

-

0.1

-

-

-

-

-

Nicotine

54-11-5

-

0.5

-

-

-

-

X

Nitric acid

7697-37-2

2

5

4

10

-

-

-

Nitric oxide

10102-43-9

25

30

-

-

-

-

-

p-Nitroaniline

100-01-6

-

3

-

-

-

-

X

Nitrobenzene

98-95-3

1

5

-

-

-

-

X

p-Nitrochlorobenzene

100-00-5

-

1

-

-

-

-

x

4-Nitrodiphenyl; see 29 CFR 1910.1003

92-93-3

                    

Nitroethane

79-24-3

100

310

-

-

-

-

-

Nitrogen dioxide

10102-44-0

-

-

1

1.8

-

-

-

Nitrogen trifluoride

7783-54-2

10

29

-

-

-

-

-

Nitroglycerinl

55-63-0

-

-

-

0.1

-

-

X

Nitromethane

75-52-5

100

250

-

-

-

-

-

1-Nitropropane

108-03-2

25

90

-

-

-

-

-

2-Nitropropane

79--46-9

10

35

-

-

-

-

-

N-Nitrosodimethylamine; see 29 CFR 1910.1016

62-79-9

                    

Nitrotoluene

                       

o-isomer

88-72-2

2

11

-

-

-

-

X

m-isomer

99-08-1

2

11

-

-

-

-

X

p-isomer

99-99-0

2

11

-

-

-

-

X

Nitrotrichloromethane; see Chloropicin

                       

Nonane

111-84-2

200

1050

-

-

-

-

-

Octachloronaphthalene

2234-13-1

-

0.1

-

0.3

-

-

X

Octane

111-65-9

300

1450

375

1800

-

-

-

Oil mist, mineral

8012-95-1

-

5

-

-

-

-

-

Osmium tetroxide (as Os)

20816-12-0

0.0002

0.002

0.0006 0.006

-

-

-

Oxalic acid

144-62-7

-

1

-

2

-

-

-

Oxygen difluoride

7783-41-7

-

-

-

-

0.05

0.1

-

Ozone

10028-15-6

0.1

0.2

0.3

0.6

-

-

-

Paraffin wax fume

8002-74-2

-

2

-

-

-

-

-

Paraquat, respirable dust

1910-42-5

4685-14-7

2074-50-2

-

0.1

-

-

-

-

X

Parathion

5838-2

-

0.1

-

-

-

-

X

Particulates not otherwise regulated

                       

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Pentaborane

19624-22-7

0.005

0.01

0.015

0.03

-

-

-

Pentachloronaphthalene

1321-64-8

-

0.5

-

-

-

-

X

Pentachlorophenol

87-86-5

-

0.5

-

-

-

-

X

Pentaerythirtol

115-77-5

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Pentane

109-66-0

600

1800

750

2250

-

-

-

2-Pentanone (Methyl propyl ketone)

107-87-9

200

700

250

875

-

-

-

Perchloroethylene (Tetrachloroethylene)

127-18-4

25

170

-

-

-

-

-

Perchloromethyl mercaptan

594-42-3

0.1

0.8

-

-

-

-

-

Perchloryl fluoride

7616-94-6

3

14

6

28

-

-

-

Perlitte

                       

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Petroleum distillates (Naphtha) (Rubber Solvent)

-

400

1600

-

-

-

-

-

Phenol

108-95-2

5

19

-

-

-

-

X

Phenothiazine

92-84-2

-

5

-

-

-

-

X

p-Phenylene diamine

106-50-3

-

0.1

-

-

-

-

X

Phenyl ether, vapor

101-84-8

1

7

-

-

-

-

-

Phenyl ether-biphenyl mixture, vapor

-

1

7

-

-

-

-

-

Phenylethylene; see Styrene

                       

Phenyl glycidyl ether (PGE)

122-60-1

1

6

-

-

-

-

-

Phenylhydrazine

100-63-0

5

20

10

45

-

-

X

Phenyl mercaptan

108-98-5

0.5

2

-

-

-

-

-

Phenylphosphine

638-21-1

-

-

-

-

0.05

0.25

-

Phorate

298-02-2

-

0.05

-

0.2

-

-

X

Phosdrin (Mevinphos®)

7786-34-7

0.01

0.1

0.03

0.3

-

-

X

Phosgene (Carbonyl chloride)

75-44-5

0.1

0.4

-

-

-

-

-

Phosphine

7803-51-2

0.3

0.4

1

1

-

-

-

Phosphoric acid

7664-38-2

-

1

-

3

-

-

-

Phosphorus (yellow)

7723-14-0

-

0.1

-

-

-

-

-

Phosphorus oxychloride

10025-87-3

0.1

0.6

-

-

-

-

-

Phosphorus pentachloride

10026-13-8

-

1

-

-

-

-

-

Phosphorus pentasulfide

1314-80-3

-

1

-

3

-

-

-

Phosphorus trichloride

7719-12-2

0.2

1.5

0.5

3

-

-

-

Phthalic anhydride

85-44-9

1

6

-

-

-

-

-

m-Phthalodinitrile

626-17-5

-

5

-

-

-

-

-

Picloram

1918-02-1

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Picric acid

88-89-1

-

0.1

-

-

-

-

x

Piperazine dihydro-chloride

142-64-3

-

5

-

-

-

-

-

Pindone (2-Pivalyl-1, 3-indandione)

83-26-1

-

0.1

-

-

-

-

-

Plaster of Paris

26499-65-0

-

-

-

-

-

-

-

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Platinum (as Pt)

7440-06-4

-

-

-

-

-

-

-

Metal

-

-

1

-

-

-

-

-

Soluble salts

-

-

0.002

-

-

-

-

-

Portland cement

65997-15-1

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Potassium hydroxide

1310-58-3

-

-

-

-

-

2

-

Propane

74-98-6

1000

1800

-

-

-

-

-

Propargl alcohol

107-19-7

1

2

-

-

-

-

X

beta-Propriolactone; see 29 CFR 1910.1013

57-57-8

                    

Propionic acid

79-09-4

10

30

-

-

-

-

-

Propoxur (Baygon)

114-26-1

-

0.5

-

-

-

-

-

n-Propyl acetate

109-60-40

200

840

250

1050

-

-

-

n-Propyl alcohol

71-23-8

200

500

250

625

-

-

-

n-Propyl nitrate

627-13-4

25

105

40

170

-

-

-

Propylene dichloride

78-87-5

75

360

110

510

-

-

-

Propylene glycol dinitrate

6423-43-4

0.05

0.3

-

-

-

-

-

Propylene glycol monomethyl ether

107-98-2

100

380

150

540

-

-

-

Propylene imine

75-55-8

2

5

-

-

-

-

X

Propylene oxide

75-56-9

20

50

-

-

-

-

-

Propyne; see Methyl acetylene

                       

Pyrethrum

8003-34-7

-

5

-

-

-

-

-

Pyridine

110-86-1

5

15

-

-

-

-

-

Quinone

106-51-4

0.1

0.4

-

-

-

-

-

Resorcinol

108-46-3

10

45

20

90

-

-

-

Rhodium (as Rh), metal fume and insoluble compounds

7440-16-6

-

0.1

-

-

-

-

-

Rhodium (as Rh), soluble compounds

744-16-6

-

0.001

-

-

-

-

-

Ronnel

299-84-3

-

10

-

-

-

-

-

Rosin core solder pyrolysis products, as formaldehyde

-

-

0.1

-

-

-

-

-

Rotenone

83-79-4

-

5

-

-

-

-

-

Rouge

                       

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Selenium compounds (as Se)

7782-49-2

-

0.2

-

-

-

-

-

Selenium hexafluoride (as Se)

7783-79-1

0.05

0.4

-

-

-

-

-

Silica, amorphous, precipitated and gel

1 12926-00-8

-

6

-

-

-

-

-

Silica, amorphous, diatomaceous earth, containing less than 1%

61790-53-2

-

6

-

-

-

-

-

crystaline silica

                       

Silica, crystaline cristobalite, respirable dust, see 29 CFR 1910.1053

14464-46-1

-

-

-

-

-

-

-

Silica, crystaline quartz, respirable dust, see 29 CFR 1910.1053

14808-60-7

-

-

-

-

-

-

-

Silica, crystaline tripoli (as quartz), respirable dust, see 29 CFR 1910.1053

1317-95-9

-

-

-

-

-

-

-

Silica, crystaline tridmite, respirable dust, see 29 CFR 1910.1053

15468-32-3

-

-

-

-

-

-

-

Silica, fused, respirable dust

60676-86-0

-

0.1

-

-

-

-

-

Silicates (less than 1% (crystaline silica))

                       

Mica (respirable dust)

12001-26-2

-

3

-

-

-

-

-

Soapstone, total dust

-

-

6

-

-

-

-

-

Soapstone, respirable dust

-

-

3

-

-

-

-

-

Talc (containing asbestos); use asbestos limit See 29 CFR 1910.1001

                       

Talc (containing no asbestos); Respirable dust

14807-96-6

-

2

-

-

-

-

-

Tremolite (use asbestos limit); See 29 CFR 1910.1001

                       

Silicon

7440-21-3

                    

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Silicon carbide

409-21-2

                    

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Silicon tetrahydride

7803-62-5

5

7

-

-

-

-

-

Silver, metal and soluble compounds (as Ag)

7440-22-4

-

0.01

-

-

-

-

-

Soapstone; see Silicates

                       

Sodium azide

26628-22-8

                    

(as HN3)

-

-

-

-

-

0.1

-

X

(as NaN3)

-

-

-

-

-

-

0.3

X

Sodium bisulfite

7631-90-5

-

5

-

-

-

-

-

Sodium fluoroacetate

62-74-8

-

0.05

-

0.15

-

-

X

Sodium hydroxide

1310-73-2

-

-

-

-

-

2

-

Sodium metabisulphite

7681-57-4

-

5

-

-

-

-

-

Starch

9005-25-8

                    

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Stibine

7803-52-3

0.1

0.5

-

-

-

-

-

Stoddard solvent

8052-41-3

100

525

-

-

-

-

-

Strychnine

57-24-9

-

0.15

-

-

-

-

-

Styrene

100-42-5

50

215

100

425

-

-

-

Subtilisins (Protolytic enzymes) sample 600-800 lpm for at least 60 minutes

9014-01-1

-

-

-

0.00006

-

-

-

Sucrose

57-50-1

-

-

-

-

-

-

-

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Sulfur dioxide

7446-09-5

2

5

5

10

-

-

-

Sulfur hexafluoride

2551-62-4

1000

6000

-

-

-

-

-

Sulfuric acid

7664-93-9

-

1

-

-

-

-

-

Sulfur monochloride

10025-67-9

-

-

-

-

1

6

-

Sulfur pentafluoride

5714-22-7

-

-

-

-

0.01

0.1

-

Sulfur tetrafluoride

7783-60-0

-

-

-

-

0.1

0.4

-

Sulfuryl fluoride

2699-79-8

5

20

10

40

-

-

-

Sulprofos

35400-43-2

-

1

-

-

-

-

-

Systox®, see Demeton

                       

2, 4, 5-T

93-76-5

-

10

-

-

-

-

-

Talc; see Silicates

                       

Tantalum, metal and oxide dust

7440-25-7

-

5

-

-

-

-

-

TEDP (Sulfotep)

3689-24-5

-

0.2

-

-

-

-

X

Tellurium and compounds (as Te)

13494-80-9

-

0.1

-

-

-

-

-

Tellurium hexafluoride (as Te)

7783-80-4

0.02

0.2

-

-

-

-

-

Temephos

3383-96-8

                    

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

TEPP

107-49-3

-

0.05

-

-

-

-

X

Terphenyls

26140-60-3

-

-

-

-

0.5

5

-

1, 1, 1, 2-Tetrachloro-2, 2-difluoroethane

76-11-9

500

4170

-

-

-

-

-

1, 1, 2, 2-Tetrachloro-1, 2-difluoroethane

76-12-0

500

4170

-

-

-

-

-

1, 1, 2, 2-Tetrachloroethane

79-34-5

1

7

-

-

-

-

X

Tetrachoroethylene; see Perchloroethylene

                       

Tetrachloromethane; see Carbon tetrachloride

                       

Tetrachloronaphthalene

1335-88-2

-

2

-

-

-

-

X

Tetraethyl lead (as Pb)

78-00-2

-

0.075

-

-

-

-

X

Tetrahydrofuran

109-99-9

200

590

250

735

-

-

-

Tetramethyl lead, (as Pb)

75-74-1

-

0.75

-

-

-

-

X

Tetramethyl succinonitrile

3333-52-6

0.5

3

-

-

-

-

X

Tetranitromethane

509-14-8

1

8

-

-

-

-

-

Tetrasodium pyrophosphate

7722-88-5

-

5

-

-

-

-

-

Tetryl (2, 4, 6-Trinitrophenyl-methyl-nitramine)

479-45-8

-

1.5

-

-

-

-

X

Thalium, Soluble compounds (as Tl)

7440-28-0

-

0.1

-

-

-

-

X

4, 4'-Thiobis(6-tert, Butyl-m-cresol)

96-69-5

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Thioglycolic acid

68-11-1

1

4

-

-

-

-

X

Thionyl chloride

7719-09-7

-

-

-

-

1

5

-

Thiram

137-26-8

-

5

-

-

-

-

-

Tin, inorganic compounds (except oxides) (as Sn)

7440-31-5

-

2

-

-

-

-

-

Tin, organic compounds (as Sn)

7440-31-5

-

0.1

-

-

-

-

X

Tin oxide (as Sn)

21651-19-4

-

2

-

-

-

-

-

Titanium dioxide

13463-67-7

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Toluene

108-88-3

100

375

150

580

-

-

-

Toluene-2, 4-diisocynate (TDI)

584-84-9

0.005

0.04

0.02

0.15

-

-

-

m-Toluidine

108-44-1

2

9

-

-

-

-

X

o-Toluidine

95-53-4

5

22

-

-

-

-

X

p-Toluidine

106-49-0

2

9

-

-

-

-

X

Toxaphene; see Chlorinated camphene

                       

Tremolite; see Silicates

                       

Tributyl phosphate

126-73-8

0.2

2.5

-

-

-

-

-

Trichloroacetic acid

76-03-9

1

7

-

-

-

-

-

1, 2, 4-Trichlorobenzene

120-82-1

-

-

-

-

5

40

-

1, 1, 1-Trichloroethane; see Methyl chloroform

                       

1, 1, 2-Trichloroethane

79-00-5

10

45

-

-

-

-

X

Trichloroethylene

79-01-6

50

270

200

1080

-

-

-

Trichloromethane; see Chloroform

                       

Trichloronaphthalene

1321-65-9

-

5

-

-

-

-

X

1, 2, 3-Trichloropropane

96-18-4

10

60

-

-

-

-

-

1, 1, 2-Trichloro-1, 2, 2-trifluoroethane

76-13-1

1000

7600

1250

9500

-

-

-

Triethylamine

121-44-8

10

40

15

60

-

-

-

Trifluorobromomethane

75-63-8

1000

6100

-

-

-

-

-

Trimellitic anhydride

552-30-7

0.005

0.04

-

-

-

-

-

Trimethylamine

75-50-3

10

24

15

36

-

-

-

Trimethyl benzene

25551-13-7

25

125

-

-

-

-

-

Trimethyl phosphite

121-45-9

2

10

-

-

-

-

-

2, 4, 6-Trinitrophenyl; see Picric acid

                       

2, 4, 6-Trinitrophenylmethyl nitamine; see Tetryl

                       

2, 4, 6-Trinitrotoluene (TNT)

118-96-7

-

0.5

-

-

-

-

X

Triorthocresyl phosphate

78-30-8

-

0.1

-

-

-

-

X

Triphenyl amine

603-34-9

-

5

-

-

-

-

-

Triphenyl phosphate

115-86-6

-

3

-

-

-

-

-

Tungsten (as W)

7440-33-7

-

-

-

-

-

-

-

Insoluble compounds

-

-

5

-

10

-

-

-

Soluble compounds

-

-

1

-

3

-

-

-

Turpentine

8006-64-2

100

560

-

-

-

-

-

Uranium (as U)

7440-61-1

-

-

-

-

-

-

-

Soluble compounds

-

-

0.05

-

-

-

-

-

Insoluble compounds

-

-

0.2

-

0.6

-

-

-

n-Valeraldehyde

110-62-3

50

175

-

-

-

-

-

Vanadium fume and

1314-62-1

-

-

-

-

-

-

-

Respirable dust (as V2O5)

-

-

0.05

-

-

-

-

-

Vegetable oil mist

-

                    

Total dust

-

-

15

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Vinyl acetate

108-05-4

10

30

20

60

-

-

-

Vinyl benzene; see Styrene

                       

Vinyl bromide

593-60-2

5

20

-

-

-

-

-

Vinyl chloride; see 29 CFR 1910.1017

75-01-4

-

-

-

-

-

-

-

Vinyl cyanide; see Acrylonitrile

                       

Vinyl cyclohexene dioxide

106-87-6

10

60

-

-

-

-

X

Vinylidene chloride (1, 1-Dichloro-ethylene)

75-35-4

1

4

-

-

-

-

-

Vinyl toluene

24994

100

480

-

-

-

-

-

VM & P Naphtha

8032-32-4

300

1350

400

1800

-

-

-

Warfarin

81-81-2

-

0.1

-

-

-

-

-

Welding fumes (total particulate)

-

-

5

-

-

-

-

-

Wood dust, all soft and hard woods, except Western red cedar

-

-

5

-

10

-

-

-

Wood dust, Western red cedar

-

-

2.5

-

-

-

-

-

Xylenes (o-, m-, p-isomers)

1330-20-7

100

435

150

655

-

-

-

m-Xylene alpha, alpha-diamine

1477-55-0

-

-

-

-

-

0.1

X

Xylidine

1300-73-8

2

10

-

-

-

-

X

Yttrium

7440-65-5

-

1

-

-

-

-

-

Zinc chloride fume

7646-85-7

-

1

-

2

-

-

-

Zinc chromate (as CrO3)

Varies with compound

-

-

-

-

-

0.1

-

Zinc oxide fume

1314-13-2

-

5

-

10

-

-

-

Zinc oxide

1314-13-2

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Zinc stearate

557-05-1

-

-

-

-

-

-

-

Total dust

-

-

10

-

-

-

-

-

Respirable fraction

-

-

5

-

-

-

-

-

Zirconium compounds (as Zr)

7440-67-7

-

5

-

10

-

-

-

(Original rule filed January 15, 1977; effective February 13, 1977. Repeal and new rule filed September 15, 1977; effective October 14, 1977. Repeal and new rule filed March 31, 1983; effective June 15, 1983. Repeal and new rule filed August 13, 1999; effective December 29, 1999. Repeal and new rule filed January 11, 2002; effective May 31, 2002. Amendment filed April 21, 2004; August 27, 2004. Amendment filed November 16, 2006; effective date March 30, 2007. Amendments filed May 7, 2018; effective August 5, 2018.)

Authority: T.C.A. §§ 4-3-1411, 50-3-105, 50-3-201, and 50-3-202.

The following state regulations pages link to this page.