46 CFR 30.10-22 – Flammable liquid–TB/ALL
The term flammable liquid means any liquid which gives off flammable vapors (as determined by flashpoint from an open-cup tester, as used for test of burning oils) at or below a temperature of 80 °F. Flammable liquids are referred to by grades as follows:
(a) Grade A. Any flammable liquid having a Reid
(b) Grade B. Any flammable liquid having a Reid
(c) Grade C. Any flammable liquid having a Reid