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CAS No 1829-00-1 , disodium

  • Name: disodium
  • Synonyms: Thiazol Yellow G;Clayton Yellow; Thiazole Yellow; Thiazole Yellow G; C.I. Direct Yellow 9; Direct Yellow 9; Thiazol Yellow;6-methyl-2-[4-[2-[4-(6-methyl-7-sulfonato-1,
    3-benzothiazol-2-yl)phenyl]iminohydrazinyl]phenyl]-1,
    3-benzothiazole-7-sulfonate;disodium;
  • CAS Registry Number:
  • Safety Statements: Moderately toxic by ingestion. When heated to decomposition it emits toxic vapors of NOx and SOx.
  • Hazard Symbols: Xn: Harmful;
  • EINECS: 217-377-4
  • Molecular Weight: 695.719899
  • InchiKey: CZIRZNRQHFVCDZ-UHFFFAOYSA-L
  • InChI: InChI=1S/C28H21N5O6S4.2Na/c1-15-3-13-21-23(25(15)42(34,
    35)36)40-27(29-21)17-5-9-19(10-6-17)31-33-32-20-11-7-18(8-12-20)28-30-
    22-14-4-16(2)26(24(22)41-28)43(37,38)39;;/h3-14H,1-2H3,(H,31,32)(H,34,
    35,36)(H,37,38,39);;/q;2*+1/p-2
  • Risk Statements: S24/25:Avoidcontactwithskinandeyes.;
  • Molecular Formula: C28H19N5Na2O6S4
  • Molecular Structure:CAS No:1829-00-1 disodium

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References of disodium
Title: Thiazol Yellow G
CAS Registry Number: 1829-00-1
CAS Name: 2,2￠-(1-Triazene-1,3-diyldi-4,1-phenylene)bis[6-methyl-7-benzothiazolesulfonic acid] disodium salt
Synonyms: C.I. Direct Yellow 9; 2,2￠-[(diazoamino)di-p-phenylene]bis[6-methyl-7-benzothiazolesulfonic acid] disodium salt; C.I. 19540; Chlorazol Yellow 2G; Clayton yellow; Diazamine Golden Yellow T; Titan yellow
Molecular Formula: C28H19N5Na2O6S4
Molecular Weight: 695.72
Percent Composition: C 48.34%, H 2.75%, N 10.07%, Na 6.61%, O 13.80%, S 18.44%
Literature References: Prepn from 2-(p-aminophenyl)-6-methyl-7-benzothiazolesulfonic acid ("dehydrothio-p-toluidinesulfonic acid"): Beilstein vol. 27, 2nd suppl, 509; F. J. Welcher, Organic Analytical Reagents vol. 4 (Van Nostrand, New York, 1948) p 391; H. King et al., Analyst 92, 695 (1967). See also: Colour Index vol. 2 (3rd ed., 1971) p 2010; H. J. Conn's Biological Stains, R. D. Lillie, Ed. (Williams & Wilkins, Baltimore, 9th ed., 1977) p 371.
Properties: Yellowish-brown powder. Sol in water, or alc (yellow solns), NaOH (reddish-yellow soln), H2SO4 (brownish-yellow soln). Protect from light.
Use: Dyeing cotton, viscose rayon, natural silk; as biological stain; as an analytical reagent, most often for the determination of Mg; as pH indicator, yellow 11.0 to red 13.0; as fluorescent dye for microscopy.