Code of Federal Regulations > Title 40 > Chapter I > Part 59 > Subpart E > Appendix - Table 2B to Subpart E of Part 59—Reactivity Factors for Aliphatic Hydrocarbon Solvent Mixtures

Regulations last checked for updates: Jan 31, 2025

Title 40 - Protection of Environment last revised: Nov 08, 2025

Appendix - Table 2B to Subpart E of Part 59—Reactivity Factors for Aliphatic Hydrocarbon Solvent Mixtures

Bin	Average boiling point * (degrees F)	Criteria	Reactivity factor (g O3/g VOC)
1	80-205	Alkanes (<2% Aromatics)	1.42
2	80-205	N- & Iso-Alkanes (≥90% and <2% Aromatics)	1.31
3	80-205	Cyclo-Alkanes (≥90% and <2% Aromatics)	1.63
4	80-205	Alkanes (2 to <8% Aromatics)	1.47
5	80-205	Alkanes (8 to 22% Aromatics)	1.56
6	>205-340	Alkanes (<2% Aromatics)	1.17
7	>205-340	N- & Iso-Alkanes (≥90% and <2% Aromatics)	1.03
8	>205-340	Cyclo-Alkanes (≥90% and <2% Aromatics)	1.44
9	>205-340	Alkanes (2 to <8% Aromatics)	1.44
10	>205-340	Alkanes (8 to 22% Aromatics)	1.98
11	>340-460	Alkanes (<2% Aromatics)	0.70
12	>340-460	N- & Iso-Alkanes (≥90% and <2% Aromatics	0.62
13	>340-460	Cyclo-Alkanes (≥90% and <2% Aromatics)	0.86
14	>340-460	Alkanes (2 to <8% Aromatics)	0.99
15	>340-460	Alkanes (8 to 22% Aromatics)	1.57
16	>460-580	Alkanes (<2% Aromatics)	0.52
17	>460-580	N- & Iso-Alkanes (≥90% and <2% Aromatics)	0.48
18	>460-580	Cyclo-Alkanes (≥90% and <2% Aromatics)	0.60
19	>460-580	Alkanes (2 to <8% Aromatics)	0.66
20	>460-580	Alkanes (8 to 22% Aromatics)	0.95

[77 FR 14286, 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.