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CAS No 6428-31-5 , Direct Black 19

  • Name: Direct Black 19
  • Synonyms: Direct Black 19;Disodium 4-amino-3,6-bis[[4-[(2,4-diaminophenyl)azo]phenyl]azo]-5-hydroxynaphthalene-2,7-disulphonate;-;
  • CAS Registry Number:
  • Density: 1.727g/cm3
  • Refractive index: 1.817
  • Water Solubility: easily soluble in water, slightly soluble in ethanol, acetone
  • Safety Statements: Mutation data reported. When heated to decomposition it emits toxic vapors of NOx and SOx.
  • EINECS: 229-208-1
  • Molecular Weight: 839.77
  • InChI: InChI=1/C34H29N13O7S2.2Na/c35-18-1-11-26(24(37)15-18)44-40-20-3-7-22(8-4-20)42-46-32-28(55(49,50)51)13-17-14-29(56(52,53)54)33(34(48)30(17)31(32)39)47-43-23-9-5-21(6-10-23)41-45-27-12-2-19(36)16-25(27)38;;/h1-16,48H,35-39H2,(H,49,50,51)(H,52,53,54);;/q;2*+1/p-2/b44-40+,45-41+,46-42+,47-43+;;
  • Molecular Formula: C34H27N13Na2O7S2
  • Molecular Structure:CAS No:6428-31-5 Direct Black 19

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