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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 175142Generated: November 4, 2026

2-Naphthalenesulfonic acid, 7,7'-(carbonyldiimino)bis[4-hydroxy-3-[2-(2-methylphenyl)diazenyl]-, sodium salt (1:2)

7,7'-(Carbonyldiimino)bis[4-hydroxy-3-[(2-methylphenyl)azo]-2-naphthalenesulfonic acid sodium] salt · 2-Naphthalenesulfonic acid, 7,7'-(carbonyldiimino)bis[ 4-hydroxy-3-[(2-methylphenyl)azo]-, disodium salt

https://huagongshe.com/en/chemical/175142

2-Naphthalenesulfonic acid, 7,7'-(carbonyldiimino)bis[4-hydroxy-3-[2-(2-methylphenyl)diazenyl]-, sodium salt (1:2) molecular structure

Identifiers & Physical Properties

CAS No.72749-87-2
Molecular formulaC35H26N6Na2O9S2
Average molar mass784.7 g/mol
Monoisotopic mass784.09980734 g/mol
SMILESCc1ccccc1N=Nc1c(S(=O)(=O)[O-])cc2cc(NC(=O)Nc3ccc4c(O)c(N=Nc5ccccc5C)c(S(=O)(=O)[O-])cc4c3)ccc2c1O.[Na+].[Na+]
InChIKeyQAMQWDOLLXNRJU-UHFFFAOYSA-L
PubChem CID175142
DTXSIDDTXSID80890249

Chemical & Physical Properties

Topological polar surface area262
Hydrogen bond donors4
Hydrogen bond acceptors13
Rotatable bonds6
Heavy atoms54
Formal charge0
Complexity1,380
EPA Substance Registry System2-Naphthalenesulfonic acid, 7,7'-(carbonyldiimino)bis[4-hydroxy-3-[(2-methylphenyl)azo]-, disodium salt (72749-87-2)
TSCA inventory statusTSCA listed

Safety & Regulations

TSCA inventory statusTSCA listed