Regulations last checked for updates: May 21, 2024

Title 40 - Protection of Environment last revised: May 17, 2024
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)
180-205Alkanes (<2% Aromatics)2.08
280-205N- & Iso-Alkanes (≥90% and <2% Aromatics)1.59
380-205Cyclo-Alkanes (≥90% and <2% Aromatics)2.52
480-205Alkanes (2 to <8% Aromatics)2.24
580-205Alkanes (8 to 22% Aromatics)2.56
6>205-340Alkanes (<2% Aromatics)1.41
7>205-340N- & Iso-Alkanes (≥90% and <2% Aromatics)1.17
8>205-340Cyclo-Alkanes (≥90% and <2% Aromatics)1.65
9>205-340Alkanes (2 to <8% Aromatics)1.62
10>205-340Alkanes (8 to 22% Aromatics)2.03
11>340-460Alkanes (<2% Aromatics)0.91
12>340-460N- & Iso-Alkanes (≥90% and <2% Aromatics)0.81
13>340-460Cyclo-Alkanes (≥90% and <2% Aromatics)1.01
14>340-460Alkanes (2 to <8% Aromatics)1.21
15>340-460Alkanes (8 to 22% Aromatics)1.82
16>460-580Alkanes (<2% Aromatics)0.57
17>460-580N- & Iso-Alkanes (≥90% and <2% Aromatics)0.51
18>460-580Cyclo-Alkanes (≥90% and <2% Aromatics)0.63
19>460-580Alkanes (2 to <8% Aromatics)0.88
20>460-580Alkanes (8 to 22% Aromatics)1.49

* Average Boiling Point = (Initial Boiling Point + Dry Point)/2(b) Aromatic Hydrocarbon Solvents

[77 FR 14286, Mar. 9, 2012]
authority: 42 U.S.C. 7414 and 7511b(e)
source: 64 FR 48815, Sept. 11, 1998, unless otherwise noted.