46 CFR 30.10-27 – Flashpoint–TB/ALL
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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-cup tester | Tag closed-cup tester (A.S.T.M.) | Pensky-Martens closed tester (A.S.T.M.) |
|---|---|---|
| 80 | 75 | |
| 150 | 140 |