46 CFR § 30.10-21 - Flammable or inflammable—TB/ALL.

---
identifier: "/us/cfr/t46/s30.10-21"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 30.10-21 - Flammable or inflammable—TB/ALL."
title_number: 46
title_name: "Shipping"
section_number: "30.10-21"
section_name: "Flammable or inflammable—TB/ALL."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "D"
subchapter_name: "TANK VESSELS"
part_number: "30"
part_name: "GENERAL PROVISIONS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 2103, 3306, 3703; DHS Delegation No. 00170.1, Revision No. 01.4."
regulatory_source: "CGFR 65-50, 30 FR 16657, Dec. 30, 1965, unless otherwise noted."
cfr_part: "30"
---


# 30.10-21 Flammable or inflammable—TB/ALL.

The words *flammable* and *inflammable* are interchangeable or synonymous terms for the purpose of the regulations in this subchapter.