eCFR Reference Browser

---

title: "21 CFR §179.39"

source: "https://www.ecfr.gov/current/title-21/section-179.39"

title_number: "21"

volume_number: "3"

chapter_number: "Unknown"

subchapter_code: "B"

subchapter_subject: "FOOD FOR HUMAN CONSUMPTION (CONTINUED)"

part_code: "179"

part_subject: "IRRADIATION IN THE PRODUCTION, PROCESSING AND HANDLING OF FOOD"

subpart_code: "B"

subpart_subject: "Radiation and Radiation Sources"

section_number: "179.39"

section_subject: "Ultraviolet radiation for the processing and treatment of food."

cfr_reference: "21 CFR 179.39"

title_name: "Title 21"

title_subject: "Food and Drugs"

parts_covered: "Parts 170 to 199"

revised_date: "Revised as of April 1, 2019"

publication_date: "As of April 1, 2019"

contains_description: "Containing a codification of documents of general applicability and future effect"

publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"

---

Ultraviolet radiation for the processing and treatment of food may be safely used under the following conditions:

(a)The radiation sources consist of low pressure mercury lamps emitting 90 percent of the emission at a wavelength of 253.7 nanometers (2,537 Angstroms).

(b)The ultraviolet radiation is used or intended for use as follows:

§179.39 - Ultraviolet radiation for the processing and treatment of food.