27 CFR §21.112-T3
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(a) API Gravity at 60 °F. 40 to 65.
(b) Reid Vapor Pressure (PSI). 6 to 15.
(c) Isopropyl alcohol. 24 to 40 percent volume.
(d) Methyl alcohol. 1.6 to 9.6 percent volume.
(e) Diisopropyl ether (DIPE). 4 to 12 percent volume.
(f) tert-Butyl alcohol. 4 to 12 percent volume.
(g) Iso-pentane. 4 to 9 percent volume.
(h) Pentane. 4 to 9 percent volume.
(i) Pentene. 0 to 2.4 percent volume.
(j) Hexane. 2 to 6 percent volume.
(k) Heptane. 1 to 3 percent volume.
(l) Sulfur (ppm). 0 to 120.
(m) Benzene (% vol.). 0 to 1.1.
(n) Distillation ( °F):
(i) 10 percent. 80 to 168.
(ii) 50 percent. 250.
(iii) End point distillation. 437.