---
kind: "section"
citation: "21 C.F.R. § 179.39"
title: "21"
number: "179.39"
heading: "Ultraviolet radiation for the processing and treatment of food."
url: "https://uscodex.org/cfr/21/179.39"
---

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


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—**

## Notes

### Amendments

[42 FR 14635, Mar. 15, 1977, as amended at 65 FR 71057, Nov. 29, 2000]

### Authority

Authority: 21 U.S.C. 321, 342, 343, 348, 373, 374.

### Source

Source: 42 FR 14635, Mar. 15, 1977, unless otherwise noted.

### Amendments

[42 FR 14635, Mar. 15, 1977, as amended at 65 FR 71057, Nov. 29, 2000]