Benzidine-2,2'-disulphonic acid
[CAS# 117-61-3]

Identification

• Classification: Chemical reagent >> Organic reagent >> Sulfonic acid / sulfinic acid
• Name: Benzidine-2,2'-disulphonic acid
• Synonyms: 2,2'-Benzidinedisulfonic acid; 2,2'-Disulfo-4,4'-diaminobiphenyl; 2,2'-Disulfobenzidine; 4,4'-Diamino-(1,1'-biphenyl)-2,2'-disulfonic acid; 4,4'-Diamino-2,2'-biphenyldisulfonic acid; 4,4'-Diaminobiphenyl-2,2'-disulfonic acid; 6,6'-Bimetanilic acid
• Molecular Formula: C₁₂H₁₂N₂O₆S₂
• Molecular Weight: 344.36
• CAS Registry Number: 117-61-3
• EC Number: 204-200-0

Properties

• Melting point: 175 ºC
• Water solubility: <0.1 g/100 mL at 20 ºC

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Carcinogenicity	Carc.	2	H351
Eye irritation	Eye Irrit.	2	H319
Acute toxicity	Acute Tox.	4	H312
Skin irritation	Skin Irrit.	2	H315
Acute toxicity	Acute Tox.	4	H302
Acute toxicity	Acute Tox.	4	H332