2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-, sodium salt (1:2)

CAS Registry Number®

129-96-4
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CAS Name

2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-, sodium salt (1:2)

Molecular Formula

C10H8O8S2.2Na

Cite this Page

2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-, sodium salt (1:2).   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=129-96-4 (retrieved 2024-09-20) (CAS RN: 129-96-4).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C10H8O8S2.2Na/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8;;/h1-4,11-12H,(H,13,14,15)(H,16,17,18);;

InChIKey

InChIKey=LKOLXLAFIYMWMU-UHFFFAOYSA-N

SMILES

OC=1C2=C(C=C(S(=O)(=O)O)C=C2O)C=C(S(=O)(=O)O)C1.[Na]

Canonical SMILES

[Na].O=S(=O)(O)C=1C=C(O)C2=C(O)C=C(C=C2C1)S(=O)(=O)O

Other Names for this Substance

  • 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-, sodium salt (1:2)
  • 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-, disodium salt
  • Sodium chromotropate
  • Chromotropic acid disodium salt
  • Sodium 1,8-dioxynaphthalene-3,6-disulfonate

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Deleted or Replaced CAS Registry Numbers

388633-48-5