21 CFR § 182.3109 - Thiodipropionic acid.

---
identifier: "/us/cfr/t21/s182.3109"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 182.3109 - Thiodipropionic acid."
title_number: 21
title_name: "Food and Drugs"
section_number: "182.3109"
section_name: "Thiodipropionic acid."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "FOOD FOR HUMAN CONSUMPTION"
part_number: "182"
part_name: "SUBSTANCES GENERALLY RECOGNIZED AS SAFE"
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."
regulatory_source: "42 FR 14640, Mar. 15, 1977, unless otherwise noted."
cfr_part: "182"
---


# 182.3109 Thiodipropionic acid.

(a) *Product.* Thiodipropionic acid.

(b) *Tolerance.* This substance is generally recognized as safe for use in food when the total content of antioxidants is not over 0.02 percent of fat or oil content, including essential (volatile) oil content of the food, provided the substance is used in accordance with good manufacturing practice.