21 C.F.R. § 573.420
Ethyl cellulose.
Cite as 21 C.F.R. § 573.420 (2026)
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 (OC
2
H
5
) 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.
[41 FR 38652, Sept. 10, 1976, as amended at 89 FR 48508, June 7, 2024]