21 CFR Part 573: Food Additives Permitted in Feed and Drinking Water of Animals
Part 573 of title 21 runs to 70 sections, and sits in subchapter E, Animal Drugs, Feeds, and Related Products. Every section is reproduced in full and is current to 2026-09-10.

- Sections
- 70
- Subparts
- 1
- Words of regulation
- 15,528
- Current to
- 2026-09-10
Subpart B: Food Additive Listing
- 573.120 Acrylamide-acrylic acid resin7
- 573.130 Aminoglycoside 3′-phospho- transferase II4
- 573.140 Ammoniated cottonseed meal11
- 573.160 Ammoniated rice hulls7
- 573.170 Ammonium formate14
- 573.180 Anhydrous ammonia12
- 573.200 Condensed animal protein hydrolysate8
- 573.210 Benzoic acid10
- 573.220 Feed-grade biuret8
- 573.225 1,3-Butylene glycol5
- 573.230 Calcium formate16
- 573.240 Calcium periodate3
- 573.260 Calcium silicate1
- 573.280 Feed-grade calcium stearate and sodium stearate7
- 573.300 Choline xanthate1
- 573.302 Chromium DL-methionine chelate21
- 573.304 Chromium propionate26
- 573.310 Crambe meal, heat toasted3
- 573.320 Diammonium phosphate7
- 573.340 Diatomaceous earth3
- 573.360 Disodium EDTA7
- 573.380 Ethoxyquin in animal feeds8
- 573.400 Ethoxyquin in certain dehydrated forage crops11
- 573.420 Ethyl cellulose5
- 573.440 Ethylene dichloride4
- 573.450 Fermented ammoniated condensed whey12
- 573.460 Formaldehyde27
- 573.480 Formic acid21
- 573.485 Fumonisin esterase17
- 573.490 Gamma-linolenic acid safflower meal11
- 573.492 Gamma-linolenic acid safflower oil17
- 573.496 Guanidinoacetic acid17
- 573.500 Condensed, extracted glutamic acid fermentation product9
- 573.520 Hemicellulose extract4
- 573.530 Hydrogenated corn syrup7
- 573.540 Hydrolyzed leather meal6
- 573.550 25-hydroxyvitamin D321
- 573.560 Iron ammonium citrate6
- 573.580 Iron-choline citrate complex1
- 573.587 Komagataella pastoris dried yeast8
- 573.600 Lignin sulfonates7
- 573.615 Marine microalgae16
- 573.620 Menadione dimethylpyrimidinol bisulfite6
- 573.625 Menadione nicotinamide bisulfite6
- 573.637 Methyl esters of conjugated linoleic acid (cis-9, trans-11 and trans-10, cis-12-octadecadienoic acids)15
- 573.640 Methyl esters of higher fatty acids16
- 573.660 Methyl glucoside-coconut oil ester3
- 573.680 Mineral oil9
- 573.685 Natamycin12
- 573.696 Feed grade sodium formate14
- 573.700 Sodium nitrite7
- 573.720 Petrolatum10
- 573.740 Odorless light petroleum hydrocarbons1
- 573.760 Poloxalene10
- 573.780 Polyethylene7
- 573.800 Polyethylene glycol (400) mono- and dioleate2
- 573.820 Polyoxyethylene glycol (400) mono- and dioleates1
- 573.840 Polysorbate 603
- 573.860 Polysorbate 801
- 573.870 Poly(2-vinylpyridine-co-styrene)10
- 573.880 Normal propyl alcohol1
- 573.900 Pyrophyllite1
- 573.914 Salts of volatile fatty acids8
- 573.920 Selenium69
- 573.940 Silicon dioxide8
- 573.960 Sorbitan monostearate1
- 573.980 Taurine7
- 573.1000 Verxite11
- 573.1010 Xanthan gum8
- 573.1020 Yellow prussiate of soda1
Read 21 CFR part 573 at the eCFR · All of 21 CFR for food safety
Questions
- What does 21 CFR part 573 cover?
- 21 CFR part 573 is Food Additives Permitted in Feed and Drinking Water of Animals. It runs to 70 sections and sits in subchapter E of chapter I, Animal Drugs, Feeds, and Related Products.
Every section of part 573 is a clause somebody has to produce evidence for at their next audit. Krolda maps supplier documents to the clause they satisfy in FSSC 22000, IFS Food and 21 CFR 117, and routes the corrective action when the evidence is missing.
Early accessRecall records come from the openFDA food enforcement API, published by the U.S. Food and Drug Administration in the public domain. Krolda adds the hazard classification and the clause mapping; neither is an FDA determination. Always check the FDA notice before acting on a recall.