US lawFederal (United States)RegulationsTitle 46 CFR — ShippingChapter I — COAST GUARD, DEPARTMENT OF HOMELAND SECURITYPart 188 — GENERAL PROVISIONSSubpart 188.10—Definition of Terms Used in This Subchapter188.10-2746 C.F.R. § 188.10-27Flammable liquid.Last amended: 2016Year: 2026Length: 19 wordsOfficial source Cite as 46 C.F.R. § 188.10-27 (2026)This term includes any liquid whose flashpoint, as determined by an open cup tester, is 80 °F. or below.Previous46 C.F.R. § 188.10-25Next46 C.F.R. § 188.10-31