27 C.F.R. § 21.112.T3 — High octane denaturant blend.
§ 21.112–T3 High octane denaturant blend. (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. [T.D. TTB–140, 81 FR 59462, Aug. 30, 2016]