{"data":{"id":"us/21-cfr-176.200","jurisdiction":"us","citation":"21 CFR 176.200","heading":"Defoaming agents used in coatings.","body":"The defoaming agents described in this section may be safely used as components of articles intended for use in producing, manufacturing, packing, processing, preparing, treating, packaging, transporting, or holding food, subject to the provisions of this section.\n(a) The defoaming agents are prepared as mixtures of substances described in paragraph (d) of this section.\n(b) The quantity of any substance employed in the formulation of defoaming agents does not exceed the amount reasonably required to accomplish the intended physical or technical effect in the defoaming agents or any limitation further provided.\n(c) Any substance employed in the production of defoaming agents and which is the subject of a regulation in parts 174, 175, 176, 177, 178 and § 179.45 of this chapter conforms with any specification in such regulation.\n(d) Substances employed in the formulation of defoaming agents include:\n(1) Substances generally recognized as safe in food.\n(2) Substances subject to prior sanction or approval for use in defoaming agents and used in accordance with such sanction or approval.\n(3) Substances identified in this paragraph (d)(3) and subject to such limitations as are provided:\nList of substances Limitations\nn-Butyl alcohol\ntert-Butyl alcohol\nButyl stearate\nCastor oil, sulfated, ammonium, potassium, or sodium salt\nCetyl alcohol\nCyclohexane\nCyclohexanol\nDiethylene glycol monolaurate\nDiethylene glycol monostearate\nDimers and trimers of unsaturated C18 fatty acids derived from: For use only at levels not to exceed 0.1% by weight of total coating solids.\nAnimal and vegetable fats and oils.\nTall oil.\nDimethylpolysiloxane\nα-(Dinonylphenyl)-ω-hydroxy-poly(oxy-1,2-ethanediyl), containing 7 to 24 moles of ethylene oxide per mole of dinonylphenol (CAS Reg. No. 9014-93-1) For use only in defoaming agents for the production of styrene-butadiene coatings at a level not to exceed 0.05 percent by weight of the finished coating.\nDipropylene glycol\nEthyl alcohol\nFats and oils derived from animal, marine, or vegetable sources:\nFatty acids derived from animal, marine, or vegetable fats and oils, and salts of such acids, single or mixed, as follows:\nAluminum.\nAmmonium.\nCalcium.\nMagnesium.\nPotassium.\nSodium.\nZinc.\nFormaldehyde For use as preservative of defoamer only.\nGlyceryl mono-12-hydroxystearate\nGlyceryl monostearate\nHexane\nHexylene glycol (2-methyl-2,4-pentanediol)\nIsobutyl alcohol\nIsopropyl alcohol\nKerosene\nLecithin hydroxylated\nMethyl alcohol\nMethylcellulose\nMethyl esters of fatty acids derived from animal, marine, or vegetable fats and oils\nMethyl oleate\nMethyl palmitate\nMineral oil\nMustardseed oil, sulfated, ammonium, potassium, or sodium salt\nMyristyl alcohol\nNaphtha\nβ-Naphthol For use as preservative of defoamer only.\nNonylphenol\nOdorless light petroleum hydrocarbons As defined in § 178.3650 of this chapter.\nOleic acid, sulfated, ammonium, potassium, or sodium salt\nParachlorometacresol For use as preservative of defoamer only.\nPeanut oil, sulfated, ammonium, potassium, or sodium salt\nPetrolatum\nPine oil\nPolyacrylic acid, sodium salt As a stabilizer and thickener in defoaming agents containing dimethylpolysiloxane.\nPolyethylene\nPolyethylene, oxidized\nPolyethylene glycol (200) dilaurate\nPolyethylene glycol (400) dioleate\nPolyethylene glycol (600) dioleate\nPolyethylene glycol (400) esters of coconut oil fatty acids\nPolyethylene glycol (400) monooleate\nPolyethylene glycol (600) monooleate\nPolyethylene glycol (600) monoricinoleate\nPolyethylene glycol (400) monostearate\nPolyoxybutylene-polyoxypropylene-polyoxyethylene glycol (min. mol. wt. 3,700)\nPolyoxyethylated (min. 3 mols) cetyl alcohol\nPolyoxyethylated (min. 5 mols) oleyl alcohol\nPolyoxyethylated (min. 1.5 mols) tridecyl alcohol\nPolyoxyethylene (min. 15 mols) ester of rosin\nPolyoxyethylene (min. 8 mols) monooleate\nPolyoxyethylene (40) stearate\nPolyoxypropylated (min. 20 mols) butyl alcohol\nPolyoxypropylene glycol (min. mol. wt. 200)\nPolyoxypropylene (min. 20 mols) oleate butyl ether\nPolyoxypropylene-polyoxyethylene glycol (min. mol. wt. 1,900)\nPolyoxypropylene (min. 40 mols) stearate butyl ether\nPotassium pentachlorophenate For use as preservative of defoamer only.\nPotassium trichlorophenate Do.\nPropylene glycol monoester of soybean oil fatty acids\nPropylene glycol monoester of tallow fatty acids\nRicebran oil, sulfated, ammonium, potassium, or sodium salt\nRosins and rosin derivatives As provided in § 178.3870 of this chapter.\nSilica\nSodium 2-mercaptobenzothiazole For use as preservative of defoamer only.\nSodium pentachlorophenate Do.\nSodium trichlorophenate Do.\nSperm oil, sulfated, ammonium, potassium, or sodium salt\nStearyl alcohol\nTall oil fatty acids\nTallow fatty acids, hydrogenated or sulfated\nTallow, sulfated, ammonium, potassium, or sodium salt\nTriethanolamine\nTriisopropanolamine\nWaxes, petroleum\n(e) The defoaming agents are used as follows:\n(1) The quantity of defoaming agent or agents used shall not exceed the amount reasonably required to accomplish the intended effect, which is to prevent or control the formation of foam.\n(2) The defoaming agents are used in the preparation and application of coatings for paper and paperboard.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER B—FOOD FOR HUMAN CONSUMPTION","PART 176—INDIRECT FOOD ADDITIVES: PAPER AND PAPERBOARD COMPONENTS","Subpart B—Substances for Use Only as Components of Paper and Paperboard"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"34068de89a1300c27c8d6f9f12e2db183e0822252f6c612353c0cc6c85e82800","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-176.180","next":"us/21-cfr-176.210"},"notice":"GroundRules: Original legal text. Not legal advice."}