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CAS No 85-86-9 , Solvent Red 23

  • Name: Solvent Red 23
  • Synonyms: CI 26100;1-[4-(Phenylazo)phenylazo]-2-naphthol; CERASIN RED;D AND C RED NO 17; HERXHEIMER FAT STAIN;Solvent Red 23; Sudan Red; FAT PONCEAU G; C.I. 26100; Transparent Red Hrr; 1-[[P-(PHENYLAZO)PHENYL]AZO]-2-NAPHTHOL; C.I.Solvent Red 23; Transparent Red HRR; FAT SOLUBLE SUDAN; CI NO 26100;
  • CAS Registry Number:
  • Transport: OTH
  • Melting Point: 199 ºC
  • Density: 1.22 g/cm3
  • Refractive index: 1.661
  • Safety Statements: R10;R20;R36/38
  • Hazard Symbols: Xi
  • EINECS: 201-638-4
  • Molecular Weight: 352.39
  • InChI: InChI=1/C22H16N4O/c27-21-15-10-16-6-4-5-9-20(16)22(21)26-25-19-13-11-18(12-14-19)24-23-17-7-2-1-3-8-17/h1-15,27H/b24-23+,26-25+
  • Risk Statements: S24/25
  • Molecular Formula: C22H16N4O
  • Molecular Structure:CAS No:85-86-9 Solvent Red 23

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References of Solvent Red 23
Title: Sudan III
CAS Registry Number: 85-86-9
CAS Name: 1-[[4-(Phenylazo)phenyl]azo]-2-naphthalenol
Synonyms: 1-(p-phenylazophenylazo)-2-naphthol; tetrazobenzene-b-naphthol; D & C Red No. 17; C.I. Solvent Red 23; C.I. 26100; Sudan Red BK; Tony Red
Molecular Formula: C22H16N4O
Molecular Weight: 352.39
Percent Composition: C 74.98%, H 4.58%, N 15.90%, O 4.54%
Literature References: Weakly acidic azo dye; originally introduced as a fat stain in 1896. Prepn: R. Nietzki, Ber. 13, 1838 (1880); Colour Index vol. 4 (3rd ed., 1971) p 4227. Description: H. J. Conn's Biological Stains, R. D. Lillie, Ed. (Williams & Wilkins, Baltimore, 9th ed., 1977) pp 168-169, 576. HPLC determn in cosmetics: J. W. Wegener et al., Chromatographia 24, 865 (1987); LC/electrospray-MS determn as environmental contaminant: H.-Y. Lin, R. D. Voyksner, Anal. Chem. 65, 451 (1993). Use as biological stain: W. Frisch-Niggemeyer, J. Virol. Methods 5, 135 (1982); A. Kishida et al., J. Controlled Release 13, 83 (1990). Structure effects on dye adsorption: H. L. Needles et al., Colourage Annu. 1995, 115.
Properties: Brown leaves with green metallic shine, mp ~195°. Insol in water or lye. Slightly sol in hot glacial acetic acid. Sol in chloroform; moderately sol ether, acetone, petr ether, fixed and volatile oils, hot glycerol. Sol in alcohol 0.15%.
Melting point: mp ~195°
Use: Dye. Biological stain.