21 CFR § 170.245 - Part 5 of a GRAS notice: Experience based on common use in food before 1958.

---
identifier: "/us/cfr/t21/s170.245"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 170.245 - Part 5 of a GRAS notice: Experience based on common use in food before 1958."
title_number: 21
title_name: "Food and Drugs"
section_number: "170.245"
section_name: "Part 5 of a GRAS notice: Experience based on common use in food before 1958."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "FOOD FOR HUMAN CONSUMPTION"
part_number: "170"
part_name: "FOOD ADDITIVES"
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, 341, 342, 346a, 348, 371."
regulatory_source: "42 FR 14483, Mar. 15, 1977, unless otherwise noted."
cfr_part: "170"
---


# 170.245 Part 5 of a GRAS notice: Experience based on common use in food before 1958.

If the statutory basis for your conclusion of GRAS status is through experience based on common use in food, in Part 5 of your GRAS notice you must include evidence of a substantial history of consumption of the notified substance for food use by a significant number of consumers prior to January 1, 1958.