4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt

C16H9N3Na2O10S2CAS 548-80-1513.36 g/mol

O−N+ONNHOHOSO−OOSO−OONa+Na+
AzoNitroPhenolSulfonic acid

Properties

Molecular formula
C16H9N3Na2O10S2
Molar mass
513.36 g/mol
Exact mass
512.9525 Da
logP
2.31Crippen estimate
Polar surface area
217.1 Ų
H-bond donors / acceptors
4 / 10
Rotatable bonds
5

Hazards

No GHS classification is on file for this compound. That is not evidence that it is harmless.

Identifiers

CAS number
548-80-1
SMILES
[O-][N+](=O)c1ccc(N=Nc2c(O)c3c(O)cc(S([O-])(=O)=O)cc3cc2S([O-])(=O)=O)cc1.[Na+].[Na+]
InChI

The InChI we hold for this record describes the parent acid and the metal separately rather than the salt above, so it is not shown here.

Weigh it out

Type any one amount. The others follow from the molar mass.

Names and synonyms

14 names · show all
  • C.I. 16575
  • Chromotrope 2B
  • Chromotrope red 4B
  • Naphtocard fast red 3B
  • p-Nitrobenzeneazochromotropic acid sodium salt
  • C.I. Mordant black 93
  • Cr-2B
  • Poly-chromotrope 2B
  • PCR 2B
  • 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[2-(4-nitrophenyl)diazenyl]-, sodium salt (1:2)
  • C.I. Acid red 176
  • C.I. Acid Red 176, disodium salt
  • 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-nitrophenyl)azo]-, disodium salt
  • 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-(p-nitrophenylazo)-, disodium salt

Work with 4,5-Dihydroxynaphthalene-3-(4-nitrophenylazo)-2,7-disulfonic acid disodium salt

Similar compounds

Tanimoto similarity of circular fingerprints over the whole catalogue.

Elsewhere