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Substance Name: 3,3'-Dichlorobenzidine
RN: 91-94-1
UNII: 1SDI2328UX
InChIKey: HUWXDEQWWKGHRV-UHFFFAOYSA-N

Note

  • A material used in the manufacture of azo dyes that is toxic to skin and carcinogenic in several species.

Molecular Formula

  • C12-H10-Cl2-N2

Molecular Weight

  • 253.131
 

Classification Codes

Classification Codes

  • Carcinogens
  • Mutation Data
  • Noxae
  • Reproductive Effect
  • Tumor Data

Superlist Classification Codes

  • 2007 CERCLA Priority List, Rank: 40
  • 2011 CERCLA Priority List, Rank: 72
  • Overall Carcinogenic Evaluation: Group 2B
  • Reasonably Anticipated to be a Carcinogen
  • Reportable Quantity (RQ) = 1 lb
  • TWA see 1910.1007
  • TWA: exposure by all routes should be carefully controlled to levels as low as possible; skin; Confirmed animal carcinogen with unknown relevance to humans

Names and Synonyms

Name of Substance

  • 3,3'-Dichlorobenzidine

MeSH Heading

  • 3,3'-Dichlorobenzidine

Synonyms

  • (1,1'-Biphenyl)-4,4'-diamine, 3,3'-dichloro-
  • 3,3'-Dichlorbenzidin
  • 3,3'-Dichlorbenzidin [Czech]
  • 3,3'-Dichloro-(1,1'-biphenyl)-4,4'-diamine
  • 3,3'-Dichloro-4,4'-biphenyldiamine
  • 3,3'-Dichloro-4,4'-diamino(1,1-biphenyl)
  • 3,3'-Dichloro-4,4'-diaminobiphenyl
  • 3,3'-Dichloro-4,4'-diaminodiphenyl
  • 3,3'-Dichloro-p,p'-bianiline
  • 3,3'-Dichlorobenzidin
  • 3,3'-Dichlorobenzidin [Czech]
  • 3,3'-Dichlorobenzidina
  • 3,3'-Dichlorobenzidina [Spanish]
  • 3,3'-Dichlorobenzidine
  • 3,3'-Dichlorobenzidine base
  • 3,3'-Dichlorobiphenyl-4,4'-diamine
  • 4'-Amino-3,3'-dichloro(1,1'-biphenyl)-4-ylamine
  • 4,4'-Diamino-3,3'-dichlorobiphenyl
  • 4,4'-Diamino-3,3'-dichlorodiphenyl
  • 4-13-00-00384 (Beilstein Handbook Reference)
  • Benzidine, 3,3'-dichloro-
  • BRN 2108022
  • C.I. 23060
  • CCRIS 220
  • CI 23060
  • Curithane C126
  • Dichlorobenzidine base
  • EINECS 202-109-0
  • HSDB 1632
  • NSC 154073
  • o,o'-Dichlorobenzidine
  • ortho,ortho'-Dichlorobenzidine
  • RCRA waste number U073
  • UNII-1SDI2328UX

Systematic Names

  • (1,1'-Biphenyl)-4,4'-diamine, 3,3'-dichloro-
  • 3,3'-Dichlorobenzidine
  • Benzidine, 3,3'-dichloro-

Superlist Names

  • (1,1'-Biphenyl)-4,4'-diamine, 3,3'-dichloro-
  • 3,3'-Dichlorobenzidine
  • RCRA waste no. U073

Registry Numbers

CAS Registry Number

  • 91-94-1

FDA UNII

  • 1SDI2328UX

System Generated Number

  • 0000091941

Structure Descriptors

InChI

1S/C12H10Cl2N2/c13-9-5-7(1-3-11(9)15)8-2-4-12(16)10(14)6-8/h1-6H,15-16H2

InChIKey

HUWXDEQWWKGHRV-UHFFFAOYSA-N

Smiles

c1(c2cc(c(N)cc2)Cl)cc(c(N)cc1)Cl

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 132-133 deg C   EXP
Boiling Point 368 deg C   EXP
pKa Dissociation Constant 3.2 (none)   EXP
log P (octanol-water) 3.51 (none)   EXP
Water Solubility 3.1 mg/L 25 EXP
Vapor Pressure 2.56E-07 mm Hg 25 EST
Henry's Law Constant 2.84E-11 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 3.96E-11 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.