21 CFR § 189.220 - Flectol H.

---
identifier: "/us/cfr/t21/s189.220"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 189.220 - Flectol H."
title_number: 21
title_name: "Food and Drugs"
section_number: "189.220"
section_name: "Flectol H."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "FOOD FOR HUMAN CONSUMPTION"
part_number: "189"
part_name: "SUBSTANCES PROHIBITED FROM USE IN HUMAN FOOD"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321, 342, 348, 371, 381."
regulatory_source: "42 FR 14659, Mar. 15, 1977, unless otherwise noted."
cfr_part: "189"
---


# 189.220 Flectol H.

(a) Flectol H is the chemical 1,2-dihydro-2,2,4-trimethylquinoline, polymerized, C<sub>12</sub>H<sub>15</sub>N. It is a synthetic chemical not found in natural products, and has been used as a component of food packaging adhesives.

(b) Food containing any added or detectable level of this substance is deemed to be adulterated in violation of the act based upon an order published in the *Federal Register* of April 7, 1967 (32 FR 5675).

[42 FR 14659, Mar. 15, 1977, as amended at 58 FR 17099, Apr. 1, 1993]