ASTM International

Standard Test Method for Flash Point by Continuously Closed Cup (CCCFP) Tester
 N D6450 REV A

Annotation

This 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 with test apparatus different from that specified.

This test method covers the determination of the flash point of fuel oils, lube oils, solvents, and other liquids by a continuously closed cup tester. The measurement is made on a test specimen of 1 mL.

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

This test method is suitable for testing samples with a flash point from 10 °C to 250 °C.

NOTE 2—Flash point determinations below 10 °C and above 250 °C can be performed; however, the precision has not been determined below and above these temperatures.

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

The 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, and pressure is in kilo-pascals.