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Substance Name: Eriochrome black A
RN: 16279-54-2
InChIKey: SXYCCJAPZKHOLS-QURGRASLSA-N

Molecular Formula

  • C20-H13-N3-O7-S

Molecular Weight

  • 439.403
 
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Names and Synonyms

Name of Substance

  • Eriochrome black A

Synonyms

  • 1-(2-Hydroxy-4-sulfo-6-nitro-1-naphthylazo-2-naphthol
  • C.I. Mordant Black 1
  • C.I. Mordant Black 1, free acid
  • EINECS 240-379-1
  • Solochrome Black AS, (free acid)

Systematic Names

  • 1-Naphthalenesulfonic acid, 3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-
  • 1-Naphthalenesulfonic acid, 3-hydroxy-4-(2-(2-hydroxy-1-naphthalenyl)diazenyl)-7-nitro-
  • 3-Hydroxy-4-((2-hydroxynaphthyl)azo)-7-nitronaphthalene-1-sulphonic acid

Registry Numbers

CAS Registry Number

  • 16279-54-2

Related Registry Numbers

  • 3618-58-4 (mono-hydrochloride salt)
  • 75790-88-4 (mono-potassium salt)

System Generated Number

  • 0016279542

Structure Descriptors

InChI

1S/C20H13N3O7S/c24-16-8-5-11-3-1-2-4-13(11)19(16)21-22-20-14-7-6-12(23(26)27)9-15(14)18(10-17(20)25)31(28,29)30/h1-10,24-25H,(H,28,29,30)/b22-21+

InChIKey

SXYCCJAPZKHOLS-QURGRASLSA-N

Smiles

O=S(=O)(O)c1c2c(c(\N=N\c3c4c(cccc4)ccc3O)c(O)c1)ccc([N+]([O-])=O)c2