1. Regulations
  2. title 40
  3. chapter I-i5
  4. part 59
  5. subpart E
  6. appendix-i 1

- Table 2A to Subpart E of Part 59—Reactivity Factors

Compound CAS No. Reactivity factor
(g O3/g VOC) 		Formaldehyde50-00-09.46 Glycerol (1,2,3-Propanetriol)56-81-53.15 Propylene Glycol57-55-62.58 Ethanol64-17-51.53 Formic Acid64-18-60.06 Acetic Acid64-19-70.68 Methanol67-56-10.67 Isopropyl Alcohol (2-Propanol)67-63-00.61 Acetone (Propanone)67-64-10.36 n-Propanol (n-Propyl Alcohol)71-23-82.50 n-Butyl Alcohol (Butanol)71-36-32.88 n-Pentanol (Amyl Alcohol)71-41-02.83 Benzene71-43-20.72 1,1,1-Trichloroethane71-55-60.01 Propane74-98-60.49 Vinyl Chloride75-01-42.83 Acetaldehyde75-07-06.54 Methylene Chloride (Dichloromethane)75-09-20.04 Ethylene Oxide75-21-80.03 Isobutane75-28-51.23 HFC-152A (1,1-Difluoroethane)75-37-60.02 Propylene Oxide75-56-90.29 t-Butyl Alcohol75-65-00.41 Methyl t-Butyl Ketone75-97-80.65 Isophorone (3,5,5-Trimethyl-2-Cyclohexenone)78-59-14.63 Isopentane78-78-41.45 Isobutanol78-83-12.51 2-Butanol (s-butyl alcohol)78-92-21.36 Methyl Ethyl Ketone (2-Butanone)78-93-31.48 Monoisopropanol Amine (1-Amino-2-Propanol)78-96-65.42 Trichloroethylene79-01-60.64 Propionic Acid79-09-41.22 Acrylic Acid79-10-711.38 Methyl Acetate79-20-90.07 Nitroethane79-24-30.06 Methacrylic Acid79-41-418.50 2-Nitropropane79-46-90.11 a-Pinene (Pine Oil)80-56-84.51 Methyl Methacrylate80-62-615.61 Diethyl Phthalate84-66-21.62 Dibutyl Phthalate84-74-21.25 Naphthalene91-20-33.34 2-Ethyl-1,3-hexanediol94-96-22.05 Xylene, ortho-95-47-67.64 o-Cresol95-48-72.40 1,2,4-Trimethylbenzene95-63-68.87 3-Pentanone96-22-01.24 Methyl Ethyl Ketoxime (Ethyl Methyl Ketone Oxime)96-29-71.58 gamma-Butyrolactone96-48-00.96 Ethyl Lactate97-64-32.48 Isobutyl Isobutyrate97-85-80.60 Isobutyl Methacrylate97-86-98.62 Butyl Methacrylate97-88-18.70 Tert-butyl benzene98-06-61.95 Benzotrifluoride98-08-80.29 PCBTF (p-Trifluoromethyl-Cl-Benzene)98-56-60.13 Cumene (Isopropyl Benzene)98-82-82.52 a-Methyl Styrene98-83-91.53 Ethyl Benzene100-41-43.04 Styrene100-42-51.73 Benzyl Alcohol100-51-65.11 Benzaldehyde100-52-70.00 Triethanolamine102-71-64.21 2-Ethyl-Hexyl Acetate103-09-30.66 2-Ethyl-Hexyl Acrylate103-11-72.52 2-Ethyl-1-Hexanol (Ethyl Hexyl Alcohol)104-76-72.00 Ethyl Propionate105-37-30.77 s-Butyl Acetate105-46-41.32 Diethyl Carbonate105-58-80.71 n-Propyl Propionate106-36-50.84 Xylene, para-106-42-35.84 p-Dichlorobenzene106-46-70.18 Dimethyl Succinate106-65-00.23 1,2-Epoxybutane (Ethyl Oxirane)106-88-70.91 n-Propyl Bromide106-94-50.42 Butane106-97-81.15 1,3-Butadiene106-99-012.61 Ethylene Glycol107-21-13.13 2-Methyl-2,4-Pentanediol107-41-51.45 Hexamethyldisiloxane107-46-00.00 Isohexane Isomers107-83-51.50 Methyl n-Propyl Ketone (2-Pentanone)107-87-92.81 Propylene Glycol Monomethyl Ether (1-Methoxy-2-Propanol)107-98-22.44 n,n-Dimethylethanolamine108-01-05.62 1-Nitropropane108-03-20.22 Vinyl Acetate108-05-43.20 Methyl Isobutyl Ketone108-10-13.88 Isopropyl Acetate108-21-41.07 Propylene Carbonate (4-Methyl-1,3-Dioxolan-2one)108-32-70.28 Xylene, meta-108-38-39.75 Propylene Glycol Monomethyl Ether Acetate (1-Methoxy-2-Propyl Acetate)108-65-61.70 1,3,5-Trimethyl Benzene108-67-811.76 Di-Isobutyl Ketone (2,6-Dimethyl-4-Heptanone)108-83-82.68 Methylcyclohexane108-87-21.70 Toluene108-88-34.00 Monochlorobenzene108-90-70.32 Cyclohexanol108-93-01.95 Cyclohexanone108-94-11.35 n-Butyl Butyrate109-21-71.08 Propyl Acetate109-60-40.78 Pentane109-66-01.31 Ethylene Glycol Monomethyl Ether (2-Methoxyethanol)109-86-42.93 Dimethoxy Methane109-87-50.94 Tetrahydrofuran109-99-94.31 Methyl Isoamyl Ketone (5-Methyl-2-Hexanone)110-12-32.41 Isobutyl Acetate110-19-00.62 Methyl Amyl Ketone110-43-02.36 Hexane110-54-31.24 n-Propyl Formate110-74-70.78 2-Ethoxyethanol110-80-53.71 Cyclohexane110-82-71.25 Morpholine110-91-81.98 Dipropylene Glycol110-98-52.31 Ethylene Glycol Monoethyl Ether Acetate (2-Ethoxyethyl Acetate)111-15-91.84 Diethylenetriamine111-40-015.53 Diethanolamine111-42-22.47 Diethylene Glycol111-46-63.35 n-Octane111-65-90.90 2-Butoxy-1-Ethanol (Ethylene Glycol Monobutyl Ether)111-76-22.90 Diethylene Glycol Methyl Ether (2-(2-Methoxyethoxy) Ethanol)111-77-32.66 n-Nonane111-84-20.78 2-(2-Ethoxyethoxy) Ethanol111-90-03.26 Ethylene Glycol Monobutyl Ether Acetate (2-Butoxyethyl Acetate)112-07-21.62 2-(2-Ethoxyethoxy) Ethyl Acetate112-15-21.48 2-(2-Butoxyethoxy)-Ethanol112-34-52.39 Dimethyl Ether115-10-60.81 Triethylamine121-44-83.84 2-Phenoxyethanol; Ethylene Glycol Phenyl Ether122-99-64.49 Diacetone Alcohol123-42-20.60 2,4-Pentanedione123-54-61.01 Butanal123-72-85.97 Butyl Acetate, n123-86-40.83 3-Methyl-Butyl Acetate123-92-21.09 2-(2-Butoxyethoxy) Ethyl Acetate124-17-41.38 2-Amino-2-Methyl-1-Propanol124-68-50.25 Perchloroethylene127-18-40.03 Ethanolamine141-43-56.81 Ethyl acetate141-78-60.63 Heptane142-82-51.07 n-Hexyl Acetate (Hexyl Acetate)142-92-70.69 2-Ethyl Hexanoic Acid149-57-53.32 trans-1,2-Dichloroethene156-60-51.70 1,2,3-Trimethyl Benzene526-73-811.97 t-Butyl Acetate540-88-50.18 Methyl Isobutyrate547-63-70.61 Methyl Lactate547-64-82.67 Methyl Propionate554-12-10.66 1,2-Butanediol584-03-22.52 n-Butyl Propionate590-01-20.84 Methyl n-Butyl Ketone (2-Hexanone)591-78-63.14 Dimethyl carbonate616-38-60.06 2-Methyl-1-Butyl Acetate624-41-91.08 n-Pentyl Propionate624-54-40.71 Ethyl Isopropyl Ether625-54-73.74 Dimethyl Adipate627-93-01.80 Methyl n-Butyl Ether628-28-43.15 Amyl Acetate (Pentyl Ethanoate, Pentyl Acetate)628-63-70.84 Ethyl n-Butyl Ether628-81-93.48 Ethyl t-Butyl Ether637-92-32.01 1,3-Dioxolane646-06-04.96 Ethyl-3-Ethoxypropionate763-69-93.58 Methyl Pyrrolidone (n-Methyl-2-Pyrrolidone)872-50-42.41 Dimethyl Gluterate1119-40-00.42 C8 Disubstituted Benzenes1330-20-77.76 Ethylene Glycol 2-Ethylhexyl Ether [2-(2-Ethylhexyloxy) Ethanol]1559-35-91.55 Propylene Glycol Monopropyl Ether (1-Propoxy-2-Propanol)1569-01-32.68 Propylene Glycol Monoethyl Ether (1-Ethoxy-2-Propanol)1569-02-43.09 2-Methoxy-1-Propanol1589-47-53.01 Methyl t-Butyl Ether1634-04-40.73 trans-1,3,3,3-tetrafluoropropene (HFO-1234ze)1645-83-60.10 Ethylcyclohexane1678-91-71.47 Isoamyl Isobutyrate2050-01-30.82 2-Propoxy-ethanol (Ethylene Glycol Monopropyl Ether)2807-30-93.30 n-Butoxy-2-Propanol5131-66-82.72 d-Limonene (Dipentene or Orange Terpene)5989-27-54.55 2,2,4-trimethyl-1,3-pentanediol diisobutyrate6846-50-00.38 Dipropylene Glycol Methyl Ether Isomer (2-[2Methoxypropoxy]-1-Propanol)13588-28-82.58 C9 Styrenes25013-15-41.53 Texanol (1,3 Pentanediol, 2,2,4-Trimethyl, 1-Isobutyrate)25265-77-40.81 Isodecyl Alcohol (8-Methyl-1-Nonanol)25339-17-71.06 Tripropylene Glycol Monomethyl Ether25498-49-11.92 Glycol Ether DPNB (1-(2-Butoxy-1-Methylethoxy) 2-Propanol)29911-28-21.83 Dipropylene Glycol Monomethyl Ether (mixture of isomers)34590-94-82.58 Propylene Glycol t-Butyl Ether (1-tert-Butoxy-2-Propanol)57018-52-71.61 2-Methoxy-1-Propyl Acetate70657-70-41.12 Dipropylene Glycol Methyl Ether Acetate Isomers88917-22-01.45 Oxo-Heptyl Acetate90438-79-20.83 2-tert-Butoxy-1-Propanol94023-15-11.81 trans-1-chloro-3,3,3-trifluoropropene (HFO-1233zdE)102687-65-00.04 Oxo-Octyl Acetate108419-32-50.81
[77 FR 14284, Mar. 9, 2012, as amended at 90 FR 5710, Jan. 17, 2025]

AUTHORITY: 42 U.S.C. 7414 and 7511b(e).

SOURCE: 64 FR 48815, Sept. 11, 1998, unless otherwise noted.