---
kind: "section"
citation: "21 C.F.R. § 573.420"
title: "21"
number: "573.420"
heading: "Ethyl cellulose."
url: "https://uscodex.org/cfr/21/573.420"
---

# §573.420. Ethyl cellulose.


The food additive ethyl cellulose may be safely used in animal feed in accordance with the following prescribed conditions:

- (a) The food additive is a cellulose ether containing ethoxy (OC2H5) groups attached by an ether linkage and containing on an anhydrous basis not more than 2.6 ethoxy groups per anhydroglucose unit.
- (b) **It is used or intended for use—**
  - (1) **As a binder or filler in dry vitamin preparations to be incorporated into animal feed.**
  - (2) As a matrix scaffolding for tracers, and the ethyl cellulose content shall not exceed 80 percent of the tracer.

## Notes

### Amendments

[41 FR 38652, Sept. 10, 1976, as amended at 89 FR 48508, June 7, 2024]

### Authority

Authority: 21 U.S.C. 321, 342, 348.

### Source

Source: 41 FR 38652, Sept. 10, 1976, unless otherwise noted.

### Amendments

[41 FR 38652, Sept. 10, 1976, as amended at 89 FR 48508, June 7, 2024]