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CAS No 548-80-1 , disodium

  • Name: disodium
  • Synonyms: 548-80-1; Naphtocard Fast Red 3B; Chromatrope 2B;(3E)-5-hydroxy-3-[(4-nitrophenyl)hydrazinylidene]-4-
    oxonaphthalene-2,7-disulfonate; Khromotrop 2B; Acid Red 176; C.I. 16575; Chromotrope Red 4B;disodium;
  • CAS Registry Number:
  • Flash Point: °C
  • Boiling Point: °Cat760mmHg
  • Density: g/cm3
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • Flash Point: °C
  • EINECS: 208-959-9
  • Molecular Weight: 513.366299
  • InchiKey: MQHFURHHKNKIRN-GVLVODDDSA-L
  • InChI: InChI=1S/C16H11N3O10S2.2Na/c20-12-7-11(30(24,25)26)5-8-6-13(31(27,
    28)29)15(16(21)14(8)12)18-17-9-1-3-10(4-2-9)19(22)23;;/h1-7,17,20H,(H,
    24,25,26)(H,27,28,29);;/q;2*+1/p-2/b18-15-;;
  • Risk Statements: S26;S36
  • Molecular Formula: C16H9N3Na2O10S2
  • Molecular Structure:CAS No:548-80-1 disodium

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References of disodium
Title: Chromotrope 2B
CAS Registry Number: 548-80-1
CAS Name: 4,5-Dihydroxy-3-[(4-nitrophenyl)azo]-2,7-naphthalenedisulfonic acid disodium salt
Synonyms: C.I. Acid Red 176; p-nitrobenzeneazochromotropic acid sodium salt; C.I. 16575
Molecular Formula: C16H9N3Na2O10S2
Molecular Weight: 513.37
Percent Composition: C 37.43%, H 1.77%, N 8.19%, Na 8.96%, O 31.17%, S 12.49%
Literature References: Prepn from diazotized p-nitroaniline and chromotropic acid, see: Colour Index vol. 4 (3rd ed., 1971) p 4097.
Properties: Reddish-brown powder. Sol in water with a yellowish-red color. Insol in alcohol.
Use: As a dye; as a reagent for boric acid or borates.