46 CFR § 30.10-27
Flashpoint—TB/ALL
April 15, 2021
The term flashpoint indicates the temperature in degrees Fahrenheit at which a liquid gives off a flammable vapor when heated in an open-cup tester. For the purpose of the regulations in this subchapter, flashpoints determined by other testing methods will be equivalent to those determined with an open-cup tester, as follows:
Table 30.10-27—Equivalent Flashpoints
[In degrees Fahrenheit]
Open Table
Open-cup tester | Tag closed-cup tester (A.S.T.M.) | Pensky-Martens closed tester (A.S.T.M.) |
---|---|---|
80 | 75 | |
150 | 140 |
[CGFR 65-50, 30 FR 16657, Dec. 30, 1965, as amended by USCG-2014-0688, 79 FR 58279, Sept. 29, 2014]