Full Description

1.1This test method covers the determination of the flash point of fuels, lube oils, solvents, and other liquids by a continuously closed cup tester utilizing a specimen size of 2mL, cup size of 7mL, with a heating rate of 2.5C per minute.

1.1.1Apparatus requiring a specimen size of 1mL, cup size of 4mL, and a heating rate of 5.5C per minute must be run according to Test Method D6450.

1.2This flash point test method is a dynamic method and depends on definite rates of temperature increase. It is one of the many flash point test methods available and every flash point test method, including this one, is an empirical method.

Note 1:Flash point values are not a constant physical chemical property of materials tested. They are a function of the apparatus design, the condition of the apparatus used, and the operational procedure carried out. Flash point can, therefore, only be defined in terms of a standard test method and no general valid correlation can be guaranteed between results obtained by different test methods or where different test apparatus is specified.

1.3This test method utilizes a closed but unsealed cup with air injected into the test chamber.

1.4This test method is suitable for testing samples with a flash point from 35C to 225C.

Note 2:Flash point determinations below 35C and above 225C may be performed; however, the precision has not been determined below and above these temperatures.

1.5If the users specification requires a defined flash point method other than this method, neither this method nor any other test method should be substituted for the prescribed test method without obtaining comparative data and an agreement from the specifier.

1.6The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. Temperatures are in degrees Celsius, pressure in kilo-Pascals.

1.7This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see 7.2, 8.5, and 10.1.2.

1.8This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.