Regulations last checked for updates: Feb 09, 2026

Title 21 - Food and Drugs last revised: Dec 18, 2026
§ 2.110 - Definition of ammonia under Federal Caustic Poison Act.

For the purpose of determining whether an article containing ammonia is subject to the Federal Caustic Poison Act, the ammonia content is to be calculated as NH3.

source: 42 FR 15559, Mar. 22, 1977, unless otherwise noted.
cite as: 21 CFR 2.110