---
kind: "section"
citation: "46 C.F.R. § 30.10-22"
title: "46"
number: "30.10-22"
heading: "Flammable liquid—TB/ALL."
url: "https://uscodex.org/cfr/46/30.10-22"
---

# §30.10-22. Flammable liquid—TB/ALL.


The term flammable liquid means any liquid which gives off flammable vapors (as determined by flashpoint from an open-cup tester, as used for test of burning oils) at or below a temperature of 80 °F. Flammable liquids are referred to by grades as follows:

- (a) **Grade A.** Any flammable liquid having a Reid 1 vapor pressure of 14 pounds or more.
- (b) **Grade B.** Any flammable liquid having a Reid 1 vapor pressure under 14 pounds and over 8 1/2 pounds.
- (c) **Grade C.** Any flammable liquid having a Reid 1 vapor pressure of 8 1/2 pounds or less and a flashpoint of 80 °F. or below.

## Notes

### Amendments

[CGFR 65-50, 30 FR 16657, Dec. 30, 1965, as amended by CGD 73-96, 42 FR 49023, Sept. 26, 1977; USCG-2000-7790, 65 FR 58458, Sept. 29, 2000]

### Authority

Authority: 46 U.S.C. 2103, 3306, 3703; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGFR 65-50, 30 FR 16657, Dec. 30, 1965, unless otherwise noted.

### Amendments

[CGFR 65-50, 30 FR 16657, Dec. 30, 1965, as amended by CGD 73-96, 42 FR 49023, Sept. 26, 1977; USCG-2000-7790, 65 FR 58458, Sept. 29, 2000]