Product Name

  • Name

    4,4'-diamino[1,1'-biphenyl]-3-sulphonic acid

  • EINECS
  • CAS No. 2051-89-0
  • Density 1.451g/cm3
  • Solubility
  • Melting Point
  • Formula C12H12N2O3S
  • Boiling Point °Cat760mmHg
  • Molecular Weight 264.305
  • Flash Point °C
  • Transport Information
  • Appearance
  • Safety Questionable carcinogen with experimental tumorigenic data. See also SULFATES. When heated to decomposition it emits very toxic fumes of NOx and SOx.
  • Risk Codes
  • Molecular Structure Molecular Structure of 2051-89-0 (4,4'-diamino[1,1'-biphenyl]-3-sulphonic acid)
  • Hazard Symbols
  • Synonyms Benzidine-3-sulphuric acid;4,4'-Diamino(1,1'-biphenyl)-3-sulphonic acid;BIPHENYL-3-SULFONIC ACID,4,4'-DIAMINO;4:4'-Diamino-3-diphenylyl hydrogen sulfate;(1,1'-Biphenyl)-3-sulfonic acid,4,4'-diamino;EINECS 218-132-4;4,4'-Diamino-biphenyl-3-sulfonsaeure;Benzidine,3-sulfo;4.4'-Diamino-diphenyl-sulfonsaeure-(3);benzidine-3-sulfonic acid;Benzidine-3-sulfuric acid;Benzidin-sulfonsaeure-(3);4.4'-Diamino-biphenyl-sulfonsaeure-(3);4,4'-diamino(1,1'-biphenyl)-3-sulfonic acid;4,4'-diamino-biphenyl-3-sulfonic acid;
  • PSA 114.79000
  • LogP 4.00790

Benzidine-3-sulfuric acid Chemical Properties

Molecular Structure of Benzidine-3-sulfuric acid (CAS NO. 2051-89-0):

IUPAC Name: 2-amino-5-(4-aminophenyl)benzenesulfonic acid
Empirical Formula: C12H12N2O3S 
Molecular Weight: 264.3003 
Index of Refraction: 1.683 
Surface Tension: 70.8 dyne/cm 
Density: 1.451 g/cm3  
Classification Code: Tumor data 

Benzidine-3-sulfuric acid Consensus Reports

Reported in EPA TSCA Inventory.

Benzidine-3-sulfuric acid Safety Profile

Questionable carcinogen with experimental tumorigenic data. See also SULFATES. When heated to decomposition it emits very toxic fumes of NOx and SOx.

Benzidine-3-sulfuric acid Specification

 Benzidine-3-sulfuric acid ,its CAS number is 2051-89-0,it can be called 4,4'-Diamino(1,1'-biphenyl)-3-sulphonic acid and [1,1'-biphenyl]-3-sulfonic acid, 4,4'-diamino- .

 It is a high toxic substance,with flammability, burning will produce toxic fumes of nitrogen oxides and sulfur oxides,so it should be stored in cool and dry environment,seprated with food and materials.dry powder,foam,sand, carbon dioxide,water mist can be used if something urgent happened.

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