ASTM D4421 Standard Test Method for Volatile Matter in Petroleum Coke
1. Scope
1.1 This test method determines the volatile matter produced by pyrolysis or evolved when petroleum coke, or both, is subjected to the specific conditions of the test. Samples having a thermal history above 600°C are excluded.

1.2 This test method is empirical and requires the entire test procedure to be closely followed to ensure results from different laboratories to be comparable.

1.3 This test method is not satisfactory for dedusting material content.

1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.5 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. Specific precautionary statements are given in Section 8.

2. Referenced Documents
2.1 ASTM Standards:
E 11 Specification for Wire-Cloth Sieves for Testing Purposes
E 220 Test Method for Calibration of Thermocouples by Comparison Techniques

3. Terminology
3.1 Descriptions of Terms Specific to This Standard:
3.1.1 analysis sample - the reduced and divided representative portion of a bulk sample, prepared for use in the laboratory.

3.1.2 bulk sample - the reduced and divided representative portion of a gross sample as prepared for shipment to and received by a laboratory, to be prepared for analysis.

3.1.3 gross sample - the original, uncrushed, representative portion taken from a shipment or lot of coke.

3.1.4 petroleum coke - a solid, carbonaceous residue produced by thermal decomposition of heavy petroleum fractions and cracked stocks.

3.1.5 test sample - the weighed portion of the analysis sample actually used in a test.

3.1.6 volatile matter - an empirical value equal to the mass loss on heating expressed as a percent of the moisture free sample used. It is determined only by this ASTM standard for petroleum coke.