ECFR pet food additive CFR573

21 CFR 573 lists food additives permitted in animal feed and drinking water — the parsed corpus holds 69 sections. Additives relevant to pet food include: 573.380 ethoxyquin in animal feeds (antioxidant; 573.400 for dehydrated forage crops); 573.550 25-hydroxyvitamin D3 (vitamin D3 activity source); 573.680 mineral oil and 573.720 petrolatum (dust-control/lubricant processing aids); 573.740 odorless light petroleum hydrocarbons; 573.260 calcium silicate, 573.340 diatomaceous earth, 573.900 pyrophyllite and 573.940 silicon dioxide (anti-caking agents); 573.840 polysorbate 60 and 573.860 polysorbate 80 (emulsifiers); 573.700 sodium nitrite; 573.920 selenium; 573.980 taurine (amino acid supplement); 573.1000 verxite and 573.1010 xanthan gum (processing/binding aids); plus various nutrient and preservative entries (e.g., 573.210 benzoic acid, 573.230 calcium formate, 573.480 formic acid, 573.496 guanidinoacetic acid, 573.615 marine microalgae). Each section defines the additive's identity, permitted uses, species and maximum inclusion rates — the specific rates must be read from the current eCFR text of the section, since the parsed corpus indexes section numbers and titles. Where the same substance appears in both 21 CFR 573 (feed additives) and 21 CFR 582 (GRAS), the additive-specific listing governs the permitted conditions of use.