{"data":{"id":"us/21-cfr-74.2151","jurisdiction":"us","citation":"21 CFR 74.2151","heading":"D\u0026C Brown No. 1.","body":"(a) Identity. The color additive D\u0026C Brown No. 1 is a mixture of the sodium salts of 4[[5-[(dialkylphenyl)- azo]-2,4-dihydroxyphenyl]azo]-benzene sulfonic acid. The alkyl group is principally the methyl group.\n(b) Specifications. D\u0026C Brown No. 1 shall conform to the following specifications and shall be free from impurities other than those named to the extent that such other impurities may be avoided by good manufacturing practice:\nSum of volatile matter (at 135 °C) and chlorides and sulfates (calculated as sodium salts), not more than 16 percent.\nWater-insoluble matter, not more than 0.2 percent.\nSulfanilic acid, sodium salt, not more than 0.2 percent.\nResorcinol, not more than 0.2 percent.\nXylidines, not more than 0.2 percent.\nDisodium salt of 4[[5-[(4-sulfophenyl)-azo]-2,4-dihydroxyphenyl]azo] benzenesulfonic acid, not more than 3 percent.\nMonosodium salt of 4[[5-[(2,4-dimethyl-phenyl)azo] -2,4-dihydroxyphenyl]azo] benzenesulfonic acid, not less than 29 percent and not more than 39 percent.\nMonosodium salt of 4[[5-[(2,5-dimethyl-phenyl)azo] -2,4-dihydroxyphenyl]azo] benzenesulfonic acid, not less than 12 percent and not more than 17 percent.\nMonosodium salt of 4[[5-[(2,3-dimethyl-phenyl)azo] - 2,4-dihydroxyphenyl]azo] benzenesulfonic acid, not less than 6 percent and not more than 13 percent.\nMonosodium salt of 4[[5-[(2-ethylphenyl)-azo]-2,4-dihydroxyphenyl]-azo] benzenesulfonic acid, not less than 5 percent and not more than 12 percent.\nMonosodium salt of 4[[5-[(3,4-dimethyl-phenyl)azo] -2,4-dihydroxyphenyl]azo] benzenesulfonic acid, not less than 3 percent and not more than 9 percent.\nMonosodium salt of 4[[5-[(2,6-dimethyl-phenyl)azo] -2,4-dihydroxyphenyl]azo] benzenesulfonic acid, not less than 3 percent and not more than 8 percent.\nMonosodium salt of 4[[5-[(4-ethylphenyl) azo]-2,4-dihydroxyphenyl]-azo] benzenesulfonic acid, not less than 2 percent and not more than 8 percent.\nLead (as Pb), not more than 20 parts per million.\nArsenic (as As), not more than 3 parts per million.\nMercury (as Hg), not more than 1 part per million.\nTotal color, not less than 84 percent.\n(c) Uses and restrictions. D\u0026C Brown No. 1 may be safely used for coloring externally applied cosmetics in amounts consistent with good manufacturing practice.\n(d) Labeling. The label of the color additive shall conform to the requirements of § 70.25 of this chapter.\n(e) Certification. All batches of D\u0026C Brown No. 1 shall be certified in accordance with regulations in part 80 of this chapter.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER A—GENERAL","PART 74—LISTING OF COLOR ADDITIVES SUBJECT TO CERTIFICATION","Subpart C—Cosmetics"],"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":"3e8142c89d50df26554acdebc20a6bb46aa97f952853c375716dd69a8ba24d08","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-74.2104","next":"us/21-cfr-74.2203"},"notice":"GroundRules: Original legal text. Not legal advice."}