1-Naphthalenesulfonic acid, 6-[2-(2,4-dimethyl-6-sulfophenyl)diazenyl]-5-hydroxy-, sodium salt (1:2)

CAS Registry Number®

3257-28-1

CAS Name

1-Naphthalenesulfonic acid, 6-[2-(2,4-dimethyl-6-sulfophenyl)diazenyl]-5-hydroxy-, sodium salt (1:2)

Molecular Formula

C18H16N2O7S2.2Na

Cite this Page

1-Naphthalenesulfonic acid, 6-[2-(2,4-dimethyl-6-sulfophenyl)diazenyl]-5-hydroxy-, sodium salt (1:2).   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=3257-28-1 (retrieved 2024-12-23) (CAS RN: 3257-28-1).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C18H16N2O7S2.2Na/c1-10-8-11(2)17(16(9-10)29(25,26)27)20-19-14-7-6-12-13(18(14)21)4-3-5-15(12)28(22,23)24;;/h3-9,21H,1-2H3,(H,22,23,24)(H,25,26,27);;

InChIKey

InChIKey=GBKLJPXZTIWPBZ-UHFFFAOYSA-N

SMILES

S(=O)(=O)(O)C=1C2=C(C(O)=C(N=NC3=C(S(=O)(=O)O)C=C(C)C=C3C)C=C2)C=CC1.[Na]

Canonical SMILES

[Na].O=S(=O)(O)C1=CC=CC2=C(O)C(N=NC=3C(=CC(=CC3S(=O)(=O)O)C)C)=CC=C21

Other Names for this Substance

  • 1-Naphthalenesulfonic acid, 6-[2-(2,4-dimethyl-6-sulfophenyl)diazenyl]-5-hydroxy-, sodium salt (1:2)
  • Scarlet GN Specially Pure
  • C.I. Food Red 2, disodium salt
  • C.I. Food Red 2
  • 1-Naphthalenesulfonic acid, 6-[(2,4-dimethyl-6-sulfophenyl)azo]-5-hydroxy-, disodium salt

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CAS INSIGHTSTM
Pile of blue, green, and white color of capsule pills with modern design light.