7-Hydroxy-8-[2-(1-Naphthalenyl)Diazenyl]-1,3-Naphthalenedisulfonic Acid Sodium Salt (1:2)
[CAS# 2766-77-0]

Identification

• Classification: Dyes and pigments >> Dyes >> Acid dyestuff
• Name: 7-Hydroxy-8-[2-(1-Naphthalenyl)Diazenyl]-1,3-Naphthalenedisulfonic Acid Sodium Salt (1:2)
• Synonyms: CRYSTAL PONCEAU 6R; Crystal Ponceau?R; C.I. Acid Red 44
• Molecular Formula: C₂₀H₁₂N₂Na₂O₇S₂
• Molecular Weight: 502.43
• CAS Registry Number: 2766-77-0
• EINECS: 220-441-4
• SMILES: Oc1ccc2c(c1/N=N/c1cccc3c1cccc3)c(cc(c2)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
• InChI: 1S/C20H14N2O7S2.2Na/c23-17-9-8-13-10-14(30(24,25)26)11-18(31(27,28)29)19(13)20(17)22-21-16-7-3-5-12-4-1-2-6-15(12)16;;/h1-11,23H,(H,24,25,26)(H,27,28,29);;/q;2*+1/p-2/b22-21+