Definition of ammonia under Federal Caustic Poison Act.
21 C.F.R. § 2.110
in effectEffective: 2024-07-01For 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: eCFRURL: https://www.ecfr.gov/api/versioner/v1/full/2024-07-01/title-21.xmlFetched: 7/26/2026