ASTM D323
Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method)
Published by ASTM International (ASTM)
The CFR incorporates ASTM D323 by reference, which makes the edition it names part of the regulation. The CFR requires the edition it names, which may not be the newest. To enforce any other edition, the agency must publish the change in the Federal Register.
The 3 editions the CFR requires
Different parts name different editions; each applies where its part says so. Newest first.
ASTM D323-15a, approved June 1, 2015
As the CFR lists it: “ASTM D323-15a, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method), approved June 1, 2015 (“ASTM D323”)”
- Listed in 46 CFR 58.03-1(e)(9); required by46 CFR 58.16-5 ↗
ASTM D323-08, approved December 15, 2008
As the CFR lists it: “ASTM D 323-08, “Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method),” approved December 15, 2008”
- Listed in 46 CFR 105.3(b)(1); required by46 CFR 105.5 ↗
ASTM D323-94
As the CFR lists it: “ASTM D 323-94, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method)”
How to read it
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ASTM D323 is copyrighted by its publisher; RegKnot shows its title and the editions the CFR names, not its text. Read from the eCFR's incorporation-by-reference sections, current as of October 26, 2026. The regulation text governs. All standards the CFR requires.