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 Farenheit] |
| 80 |
75 |
|
| 150 |
|
140 |