StacksVerified U.S. regulatory reference

21 CFR §573.900

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
Pyrophyllite (aluminum silicate monohydrate) may be safely used as the sole anticaking aid, blending agent, pelleting aid, or carrier in animal feed when incorporated therein in an amount not to exceed 2 percent in complete animal feed.