C.I. Food Yellow 3

CAS Registry Number®

2783-94-0
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CAS Name

C.I. Food Yellow 3

Molecular Formula

C16H12N2O7S2.2Na

Cite this Page

C.I. Food Yellow 3.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=2783-94-0 (retrieved 2022-07-01) (CAS RN: 2783-94-0).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C16H12N2O7S2.2Na/c19-15-8-1-10-9-13(27(23,24)25)6-7-14(10)16(15)18-17-11-2-4-12(5-3-11)26(20,21)22;;/h1-9,19H,(H,20,21,22)(H,23,24,25);;

InChIKey

InChIKey=AUGXBTCWEOTPFZ-UHFFFAOYSA-N

SMILES

N(=NC1=CC=C(S(=O)(=O)O)C=C1)C=2C3=C(C=C(S(=O)(=O)O)C=C3)C=CC2O.[Na]

Canonical SMILES

[Na].O=S(=O)(O)C1=CC=C(N=NC2=C(O)C=CC3=CC(=CC=C32)S(=O)(=O)O)C=C1

Other Names for this Substance

  • 2-Naphthalenesulfonic acid, 6-hydroxy-5-[2-(4-sulfophenyl)diazenyl]-, sodium salt (1:2)
  • Sunset Yellow FCF
  • C.I. Food Yellow 3, disodium salt
  • 2-Naphthalenesulfonic acid, 6-hydroxy-5-[(4-sulfophenyl)azo]-, disodium salt
  • C.I. Food Yellow 3

Deleted or Replaced CAS Registry Numbers

1342-61-6, 12707-27-6