Mich. Admin. Code R. 325.60158 - Maximum allowable concentrations for substances; I to M

Rule 8. Table 4 for substances I to M, are as follows:

TABLE 4 MAXIMUM ALLOWABLE CONCENTRATIONS FOR SUBSTANCES; I TO M
SUBSTANCE		CAS No.1	MAC/Ceiling/STEL
			ppm	mg/m3
Indene	95-13-6	10	45
Indium and compounds (as In)	7440-74-6	---	0.1
C	Iodine	7553-56-2	0.1	1
Iron oxide fume	1309-37-1	---	10
Iron salts, soluble (as Fe)	Varies with compound	---	1
Isoamyl acetate	123-92-2	100	525
Isoamyl alcohol	123-51-3	100	360
Isobutyl acetate	110-19-0	150	700
Isobutyl alcohol	78-83-1	100	300
Isophorone	78-59-1	25	140
Isopropyl acetate	108-21-4	250	950
Isopropyl alcohol	67-63-0	400	980
Isopropylamine	75-31-0	5	12
Isopropyl ether	108-20-3	500	2,100
Isopropyl glycidyl ether (IGE)	4016-14-2	50	240
Kaolin	Inert dust
Ketene	463-51-4	0.5	0.9
Lead and lead compounds	See CS 603. Lead Exposure in Construction*
Limestone	1317-65-3	Inert dust
S	Lindane	58-89-9	---	0.5
Lithium hydride	7580-67-8	---	0.025
L.P.G. (Liquified petroleum gas)	68476-85-7	1,000	1,800
Magnesite	546-93-0	Inert dust
Magnesium oxide fume	1309-48-4	15
S	Malathion	121-75-5	---	15
Maleic anhydride	108-31-6	0.25	1
C	Manganese and compounds (as Mn)	7439-96-5	---	5
Marble	1317-65-3	Inert dust
S	Mercury	7439-97-6	---	0.1
S	Mercury (organic compounds)	Varies with compound	---	0.01
Mesityl oxide	141-79-7	25	100
Methane		Inert gas
Methanethiol	See Methyl mercaptan
Methoxychlor	72-43-5	---	15
2-Methoxyethanol	See Methyl cellosolve
Methyl acetate	79-20-9	200	610
Methyl acetylene (propyne)	74-99-7	1,000	1,650
Methyl acetylene-propadiene mixture (MAPP)	-	1,000	1,800
S	Methyl acrylate	96-33-3	10	35
Methylal (dimethoxymethane)	109-87-5	1,000	3,100
Methyl alcohol (methanol)	67-56-1	200	260
Methylamine	74-89-5	10	12
Methyl amyl alcohol	See Methyl isobutyl carbinol
Methyl (n-amyl) ketone (2-heptanone)	110-43-0	100	465
S, C	Methyl bromide	74-83-9	20	80
Methyl butyl ketone	See 2-Hexanone
S	Methyl cellosolve	109-86-4	25	80
S	Methyl cellosolve acetate	110-49-6	25	120
C	Methyl chloride	74-87-3	100	210
Methyl chloroform	71-55-6	350	1,900
Methylcyclohexane	108-87-2	500	2,000
Methylcyclohexanol	25639-42-3	100	470
S	o-Methylcyclohexanone	583-60-8	100	460
Methylenedianiline (MDA)	See CS 605. Methylenedianiline (MDA) in Construction*
Methyl ethyl ketone (MEK)	See 2-Butanone
Methyl formate	107-31-3	100	250
S	Methyl iodide	74-88-4	5	28
Methyl isoamyl ketone	110-12-3	100	475
S	Methyl isobutyl carbinol	108-11-2	25	100
Methyl isobutyl ketone	See Hexone
S	Methyl isocyanate	624-83-9	0.02	0.05
Methyl mercaptan	74-93-1	0.5	1
Methyl methacrylate	80-62-6	100	410
Methyl propyl ketone	See 2-Pentanone
C	Methyl silicate	681-84-5	5	30
C	alpha-Methyl styrene	98-83-9	100	480
C	Methylene bisphenyl isocyanate (MDI)	101-68-8	0.02	0.2
Methylene chloride (dichloromethane)	See OH 313. Methylene Chloride*
Molybdenum
Soluble compounds	7439-98-7	---	5
Insoluble compounds		---	15
S	Monomethyl aniline	100-61-8	2	9
S, C	Monomethyl hydrazine	60-34-4	0.2	0.35
S	Morpholine	110-91-8	20	70
1	The CAS number is for information only. Enforcement is based on the substance name. For an entry covering more than 1 metal compound measured as the metal, the CAS number for the metal is given - not the CAS number for the individual compounds.
A	See R 325.60154(2)(a).
C	See R 325.60154(2)(b).
S	See R 325.60154(2)(c).
STEL	See R 325.60154(2)(d).
*	Caution--these rules contain extensive requirements for exposure to these substances.
All MIOSHA Standards shown in this table are referenced in R 325.60151.

Notes

Mich. Admin. Code R. 325.60158

2002 AACS; 2013 AACS; 2017 AACS; 2019 MR 18, Eff. 9/20/2019