ASTM D2416 Test Method for Coking Value of Tar and Pitch (Modified Conradson)
1. Scope
1.1 This test method covers the determination of the coking value of tar and pitch having an ash content not over 0.5 % as determined by Test Method D2415.
1.2 Coking values by this test method are practically the same as those obtained by Test Method D189, but results are more reproducible. The apparatus used is identical, except that an electric furnace is substituted for the gas flame.
1.3 This 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.
2. Referenced Documents
2.1 ASTM Standards:
D140 Practice for Sampling Bituminous Materials
D189 Test Method for Conradson Carbon Residue of Petroleum Products
D370 Test Method for Dehydration of Oil-Type Preservatives
D2415 Test Method for Ash in Coal Tars and Pitch
E 11 Specification for Wire Cloth and Sieves for Testing Purposes
