1-Naphthalenesulfonic acid, 3-hydroxy-4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-7-nitro-, sodium salt (1:1)

CAS Registry Number®

3618-58-4

CAS Name

1-Naphthalenesulfonic acid, 3-hydroxy-4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-7-nitro-, sodium salt (1:1)

Molecular Formula

C20H13N3O7S.Na

Cite this Page

1-Naphthalenesulfonic acid, 3-hydroxy-4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-7-nitro-, sodium salt (1:1).   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=3618-58-4 (retrieved 2024-11-22) (CAS RN: 3618-58-4).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C20H13N3O7S.Na/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);

InChIKey

InChIKey=XNKRHNQHWZEAPV-UHFFFAOYSA-N

SMILES

S(=O)(=O)(O)C=1C2=C(C(N=NC=3C4=C(C=CC3O)C=CC=C4)=C(O)C1)C=CC(N(=O)=O)=C2.[Na]

Canonical SMILES

[Na].O=N(=O)C1=CC=C2C(N=NC3=C(O)C=CC=4C=CC=CC43)=C(O)C=C(C2=C1)S(=O)(=O)O

Other Names for this Substance

  • 1-Naphthalenesulfonic acid, 3-hydroxy-4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-7-nitro-, sodium salt (1:1)
  • Eriochrome Black A
  • 1-Naphthalenesulfonic acid, 3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-, monosodium salt
  • C.I. Mordant Black 1
  • C.I. 15710

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Deleted or Replaced CAS Registry Numbers

12237-68-2, 40858-61-5

CAS INSIGHTSTM
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