40 CFR Appendix Table 2A to Subpart E of Part 59 - Reactivity Factors
Table 2A to Subpart E of Part 59—Reactivity Factors
| Compound | CAS No. | Reactivity factor
(g O |
|---|---|---|
| Formaldehyde | 50-00-0 | 9.46 |
| Glycerol (1,2,3-Propanetriol) | 56-81-5 | 3.15 |
| Propylene Glycol | 57-55-6 | 2.58 |
| Ethanol | 64-17-5 | 1.53 |
| Formic Acid | 64-18-6 | 0.06 |
| Acetic Acid | 64-19-7 | 0.68 |
| Methanol | 67-56-1 | 0.67 |
| Isopropyl Alcohol (2-Propanol) | 67-63-0 | 0.61 |
| Acetone (Propanone) | 67-64-1 | 0.36 |
| n-Propanol (n-Propyl Alcohol) | 71-23-8 | 2.50 |
| n-Butyl Alcohol (Butanol) | 71-36-3 | 2.88 |
| n-Pentanol (Amyl Alcohol) | 71-41-0 | 2.83 |
| Benzene | 71-43-2 | 0.72 |
| 1,1,1-Trichloroethane | 71-55-6 | 0.01 |
| Propane | 74-98-6 | 0.49 |
| Vinyl Chloride | 75-01-4 | 2.83 |
| Acetaldehyde | 75-07-0 | 6.54 |
| Methylene Chloride (Dichloromethane) | 75-09-2 | 0.04 |
| Ethylene Oxide | 75-21-8 | 0.03 |
| Isobutane | 75-28-5 | 1.23 |
| HFC-152A (1,1-Difluoroethane) | 75-37-6 | 0.02 |
| Propylene Oxide | 75-56-9 | 0.29 |
| t-Butyl Alcohol | 75-65-0 | 0.41 |
| Methyl t-Butyl Ketone | 75-97-8 | 0.65 |
| Isophorone (3,5,5-Trimethyl-2-Cyclohexenone) | 78-59-1 | 4.63 |
| Isopentane | 78-78-4 | 1.45 |
| Isobutanol | 78-83-1 | 2.51 |
| 2-Butanol (s-butyl alcohol) | 78-92-2 | 1.36 |
| Methyl Ethyl Ketone (2-Butanone) | 78-93-3 | 1.48 |
| Monoisopropanol Amine (1-Amino-2-Propanol) | 78-96-6 | 5.42 |
| Trichloroethylene | 79-01-6 | 0.64 |
| Propionic Acid | 79-09-4 | 1.22 |
| Acrylic Acid | 79-10-7 | 11.38 |
| Methyl Acetate | 79-20-9 | 0.07 |
| Nitroethane | 79-24-3 | 0.06 |
| Methacrylic Acid | 79-41-4 | 18.50 |
| 2-Nitropropane | 79-46-9 | 0.11 |
| a-Pinene (Pine Oil) | 80-56-8 | 4.51 |
| Methyl Methacrylate | 80-62-6 | 15.61 |
| Diethyl Phthalate | 84-66-2 | 1.62 |
| Dibutyl Phthalate | 84-74-2 | 1.25 |
| Naphthalene | 91-20-3 | 3.34 |
| 2-Ethyl-1,3-hexanediol | 94-96-2 | 2.05 |
| Xylene, ortho- | 95-47-6 | 7.64 |
| o-Cresol | 95-48-7 | 2.40 |
| 1,2,4-Trimethylbenzene | 95-63-6 | 8.87 |
| 3-Pentanone | 96-22-0 | 1.24 |
| Methyl Ethyl Ketoxime (Ethyl Methyl Ketone Oxime) | 96-29-7 | 1.58 |
| gamma-Butyrolactone | 96-48-0 | 0.96 |
| Ethyl Lactate | 97-64-3 | 2.48 |
| Isobutyl Isobutyrate | 97-85-8 | 0.60 |
| Isobutyl Methacrylate | 97-86-9 | 8.62 |
| Butyl Methacrylate | 97-88-1 | 8.70 |
| Tert-butyl benzene | 98-06-6 | 1.95 |
| Benzotrifluoride | 98-08-8 | 0.29 |
| PCBTF (p-Trifluoromethyl-Cl-Benzene) | 98-56-6 | 0.13 |
| Cumene (Isopropyl Benzene) | 98-82-8 | 2.52 |
| a-Methyl Styrene | 98-83-9 | 1.53 |
| Ethyl Benzene | 100-41-4 | 3.04 |
| Styrene | 100-42-5 | 1.73 |
| Benzyl Alcohol | 100-51-6 | 5.11 |
| Benzaldehyde | 100-52-7 | 0.00 |
| Triethanolamine | 102-71-6 | 4.21 |
| 2-Ethyl-Hexyl Acetate | 103-09-3 | 0.66 |
| 2-Ethyl-Hexyl Acrylate | 103-11-7 | 2.52 |
| 2-Ethyl-1-Hexanol (Ethyl Hexyl Alcohol) | 104-76-7 | 2.00 |
| Ethyl Propionate | 105-37-3 | 0.77 |
| s-Butyl Acetate | 105-46-4 | 1.32 |
| Diethyl Carbonate | 105-58-8 | 0.71 |
| n-Propyl Propionate | 106-36-5 | 0.84 |
| Xylene, para- | 106-42-3 | 5.84 |
| p-Dichlorobenzene | 106-46-7 | 0.18 |
| Dimethyl Succinate | 106-65-0 | 0.23 |
| 1,2-Epoxybutane (Ethyl Oxirane) | 106-88-7 | 0.91 |
| n-Propyl Bromide | 106-94-5 | 0.42 |
| Butane | 106-97-8 | 1.15 |
| 1,3-Butadiene | 106-99-0 | 12.61 |
| Ethylene Glycol | 107-21-1 | 3.13 |
| 2-Methyl-2,4-Pentanediol | 107-41-5 | 1.45 |
| Hexamethyldisiloxane | 107-46-0 | 0.00 |
| Isohexane Isomers | 107-83-5 | 1.50 |
| Methyl n-Propyl Ketone (2-Pentanone) | 107-87-9 | 2.81 |
| Propylene Glycol Monomethyl Ether (1-Methoxy-2-Propanol) | 107-98-2 | 2.44 |
| n,n-Dimethylethanolamine | 108-01-0 | 5.62 |
| 1-Nitropropane | 108-03-2 | 0.22 |
| Vinyl Acetate | 108-05-4 | 3.20 |
| Methyl Isobutyl Ketone | 108-10-1 | 3.88 |
| Isopropyl Acetate | 108-21-4 | 1.07 |
| Propylene Carbonate (4-Methyl-1,3-Dioxolan-2one) | 108-32-7 | 0.28 |
| Xylene, meta- | 108-38-3 | 9.75 |
| Propylene Glycol Monomethyl Ether Acetate (1-Methoxy-2-Propyl Acetate) | 108-65-6 | 1.70 |
| 1,3,5-Trimethyl Benzene | 108-67-8 | 11.76 |
| Di-Isobutyl Ketone (2,6-Dimethyl-4-Heptanone) | 108-83-8 | 2.68 |
| Methylcyclohexane | 108-87-2 | 1.70 |
| Toluene | 108-88-3 | 4.00 |
| Monochlorobenzene | 108-90-7 | 0.32 |
| Cyclohexanol | 108-93-0 | 1.95 |
| Cyclohexanone | 108-94-1 | 1.35 |
| n-Butyl Butyrate | 109-21-7 | 1.08 |
| Propyl Acetate | 109-60-4 | 0.78 |
| Pentane | 109-66-0 | 1.31 |
| Ethylene Glycol Monomethyl Ether (2-Methoxyethanol) | 109-86-4 | 2.93 |
| Dimethoxy Methane | 109-87-5 | 0.94 |
| Tetrahydrofuran | 109-99-9 | 4.31 |
| Methyl Isoamyl Ketone (5-Methyl-2-Hexanone) | 110-12-3 | 2.41 |
| Isobutyl Acetate | 110-19-0 | 0.62 |
| Methyl Amyl Ketone | 110-43-0 | 2.36 |
| Hexane | 110-54-3 | 1.24 |
| n-Propyl Formate | 110-74-7 | 0.78 |
| 2-Ethoxyethanol | 110-80-5 | 3.71 |
| Cyclohexane | 110-82-7 | 1.25 |
| Morpholine | 110-91-8 | 1.98 |
| Dipropylene Glycol | 110-98-5 | 2.31 |
| Ethylene Glycol Monoethyl Ether Acetate (2-Ethoxyethyl Acetate) | 111-15-9 | 1.84 |
| Diethylenetriamine | 111-40-0 | 15.53 |
| Diethanolamine | 111-42-2 | 2.47 |
| Diethylene Glycol | 111-46-6 | 3.35 |
| n-Octane | 111-65-9 | 0.90 |
| 2-Butoxy-1-Ethanol (Ethylene Glycol Monobutyl Ether) | 111-76-2 | 2.90 |
| Diethylene Glycol Methyl Ether (2-(2-Methoxyethoxy) Ethanol) | 111-77-3 | 2.66 |
| n-Nonane | 111-84-2 | 0.78 |
| 2-(2-Ethoxyethoxy) Ethanol | 111-90-0 | 3.26 |
| Ethylene Glycol Monobutyl Ether Acetate (2-Butoxyethyl Acetate) | 112-07-2 | 1.62 |
| 2-(2-Ethoxyethoxy) Ethyl Acetate | 112-15-2 | 1.48 |
| 2-(2-Butoxyethoxy)-Ethanol | 112-34-5 | 2.39 |
| Dimethyl Ether | 115-10-6 | 0.81 |
| Triethylamine | 121-44-8 | 3.84 |
| 2-Phenoxyethanol; Ethylene Glycol Phenyl Ether | 122-99-6 | 4.49 |
| Diacetone Alcohol | 123-42-2 | 0.60 |
| 2,4-Pentanedione | 123-54-6 | 1.01 |
| Butanal | 123-72-8 | 5.97 |
| Butyl Acetate, n | 123-86-4 | 0.83 |
| 3-Methyl-Butyl Acetate | 123-92-2 | 1.09 |
| 2-(2-Butoxyethoxy) Ethyl Acetate | 124-17-4 | 1.38 |
| 2-Amino-2-Methyl-1-Propanol | 124-68-5 | 0.25 |
| Perchloroethylene | 127-18-4 | 0.03 |
| Ethanolamine | 141-43-5 | 6.81 |
| Ethyl acetate | 141-78-6 | 0.63 |
| Heptane | 142-82-5 | 1.07 |
| n-Hexyl Acetate (Hexyl Acetate) | 142-92-7 | 0.69 |
| 2-Ethyl Hexanoic Acid | 149-57-5 | 3.32 |
| trans-1,2-Dichloroethene | 156-60-5 | 1.70 |
| 1,2,3-Trimethyl Benzene | 526-73-8 | 11.97 |
| t-Butyl Acetate | 540-88-5 | 0.18 |
| Methyl Isobutyrate | 547-63-7 | 0.61 |
| Methyl Lactate | 547-64-8 | 2.67 |
| Methyl Propionate | 554-12-1 | 0.66 |
| 1,2-Butanediol | 584-03-2 | 2.52 |
| n-Butyl Propionate | 590-01-2 | 0.84 |
| Methyl n-Butyl Ketone (2-Hexanone) | 591-78-6 | 3.14 |
| Dimethyl carbonate | 616-38-6 | 0.06 |
| 2-Methyl-1-Butyl Acetate | 624-41-9 | 1.08 |
| n-Pentyl Propionate | 624-54-4 | 0.71 |
| Ethyl Isopropyl Ether | 625-54-7 | 3.74 |
| Dimethyl Adipate | 627-93-0 | 1.80 |
| Methyl n-Butyl Ether | 628-28-4 | 3.15 |
| Amyl Acetate (Pentyl Ethanoate, Pentyl Acetate) | 628-63-7 | 0.84 |
| Ethyl n-Butyl Ether | 628-81-9 | 3.48 |
| Ethyl t-Butyl Ether | 637-92-3 | 2.01 |
| 1,3-Dioxolane | 646-06-0 | 4.96 |
| Ethyl-3-Ethoxypropionate | 763-69-9 | 3.58 |
| Methyl Pyrrolidone (n-Methyl-2-Pyrrolidone) | 872-50-4 | 2.41 |
| Dimethyl Gluterate | 1119-40-0 | 0.42 |
| C8 Disubstituted Benzenes | 1330-20-7 | 7.76 |
| Ethylene Glycol 2-Ethylhexyl Ether [2-(2-Ethylhexyloxy) Ethanol] | 1559-35-9 | 1.55 |
| Propylene Glycol Monopropyl Ether (1-Propoxy-2-Propanol) | 1569-01-3 | 2.68 |
| Propylene Glycol Monoethyl Ether (1-Ethoxy-2-Propanol) | 1569-02-4 | 3.09 |
| 2-Methoxy-1-Propanol | 1589-47-5 | 3.01 |
| Methyl t-Butyl Ether | 1634-04-4 | 0.73 |
| trans-1,3,3,3-tetrafluoropropene (HFO-1234ze) | 1645-83-6 | 0.10 |
| Ethylcyclohexane | 1678-91-7 | 1.47 |
| Isoamyl Isobutyrate | 2050-01-3 | 0.82 |
| 2-Propoxy-ethanol (Ethylene Glycol Monopropyl Ether) | 2807-30-9 | 3.30 |
| n-Butoxy-2-Propanol | 5131-66-8 | 2.72 |
| d-Limonene (Dipentene or Orange Terpene) | 5989-27-5 | 4.55 |
| 2,2,4-trimethyl-1,3-pentanediol diisobutyrate | 6846-50-0 | 0.38 |
| Dipropylene Glycol Methyl Ether Isomer (2-[2Methoxypropoxy]-1-Propanol) | 13588-28-8 | 2.58 |
| C9 Styrenes | 25013-15-4 | 1.53 |
| Texanol (1,3 Pentanediol, 2,2,4-Trimethyl, 1-Isobutyrate) | 25265-77-4 | 0.81 |
| Isodecyl Alcohol (8-Methyl-1-Nonanol) | 25339-17-7 | 1.06 |
| Tripropylene Glycol Monomethyl Ether | 25498-49-1 | 1.92 |
| Glycol Ether DPNB (1-(2-Butoxy-1-Methylethoxy) 2-Propanol) | 29911-28-2 | 1.83 |
| Dipropylene Glycol Monomethyl Ether (mixture of isomers) | 34590-94-8 | 2.58 |
| Propylene Glycol t-Butyl Ether (1-tert-Butoxy-2-Propanol) | 57018-52-7 | 1.61 |
| 2-Methoxy-1-Propyl Acetate | 70657-70-4 | 1.12 |
| Dipropylene Glycol Methyl Ether Acetate Isomers | 88917-22-0 | 1.45 |
| Oxo-Heptyl Acetate | 90438-79-2 | 0.83 |
| 2-tert-Butoxy-1-Propanol | 94023-15-1 | 1.81 |
| trans-1-chloro-3,3,3-trifluoropropene (HFO-1233zdE) | 102687-65-0 | 0.04 |
| Oxo-Octyl Acetate | 108419-32-5 | 0.81 |
[77 FR 14284, Mar. 9, 2012, as amended at 90 FR 5710, Jan. 17, 2025]