21 CFR § 2.110 - Definition of ammonia under Federal Caustic Poison Act.

---
identifier: "/us/cfr/t21/s2.110"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 2.110 - Definition of ammonia under Federal Caustic Poison Act."
title_number: 21
title_name: "Food and Drugs"
section_number: "2.110"
section_name: "Definition of ammonia under Federal Caustic Poison Act."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "A"
subchapter_name: "GENERAL"
part_number: "2"
part_name: "GENERAL ADMINISTRATIVE RULINGS AND DECISIONS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "15 U.S.C. 402, 409; 21 U.S.C. 321, 331, 335, 342, 343, 346a, 348, 351, 352, 355, 360b, 361, 362, 371, 372, 374; 42 U.S.C. 7671"
regulatory_source: "42 FR 15559, Mar. 22, 1977, unless otherwise noted."
cfr_part: "2"
---


# 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 NH<sub>3</sub>.