Basic information Safety Supplier Related

2,2',5,5'-Tetrachlorobenzidine

Basic information Safety Supplier Related

2,2',5,5'-Tetrachlorobenzidine Basic information

Product Name:
2,2',5,5'-Tetrachlorobenzidine
Synonyms:
  • 4-(4-aminophenyl)-N,N,2,3-tetrachloroaniline
  • 4,4'-diamino-5,5',2,2'-tetrachlorobiphenyl
  • 2,2,5,5-TETRACHLORO-4,4-DIAMINOBIPHENYL
  • 2,2,5,5-TETRACHLOROBENZIDINE 98+%
  • 2,2',5,5'-Tetrachloro-[1,1'-Biphenyl]-4,4'-diamine
  • 2,2',5,5'-TETRACHLOROBENZIDINE
  • 4,4'-DIAMINO-2,2',5,5'-TETRACHLOROBIPHENYL
  • 2,2',5,5'-Tetrachlorobiphenyl-4,4'-diamine
CAS:
15721-02-5
MF:
C12H8Cl4N2
MW:
322.02
EINECS:
239-815-3
Product Categories:
  • Biphenyl & Diphenyl ether
  • Intermediates of Dyes and Pigments
Mol File:
15721-02-5.mol
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2,2',5,5'-Tetrachlorobenzidine Chemical Properties

Melting point:
135-140 °C(lit.)
Boiling point:
477.67°C (rough estimate)
Density 
1.5309 (rough estimate)
refractive index 
1.6000 (estimate)
storage temp. 
-70°C
solubility 
soluble in Methanol
form 
powder to crystal
pka
1.58±0.13(Predicted)
color 
Light yellow to Yellow to Orange
CAS DataBase Reference
15721-02-5(CAS DataBase Reference)
IARC
3 (Vol. 27, Sup 7) 1987
EPA Substance Registry System
[1,1'-Biphenyl]-4,4'-diamine, 2,2',5,5'-tetrachloro- (15721-02-5)
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Safety Information

Hazard Codes 
T
Risk Statements 
61
Safety Statements 
53-45
WGK Germany 
3
RTECS 
DD1751000
HS Code 
2921.59.8090

MSDS

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2,2',5,5'-Tetrachlorobenzidine Usage And Synthesis

Definition

ChEBI: 2,2',5,5'-Tetrachlorobenzidine is a member of biphenyls and a dichlorobenzene.

Production Methods

2,2' ,5,5' -Tetrachlorobenzidine is made by the reduction of 2,5-dichloronitrobenzene with zinc dust and sodium hydroxide solution. The subsequent rearrangement is carried out using sulfuric acid or hydrochloric acid. The dihydrochloride melts at 230 ℃. Tetrachlorobenzidine is marketed as the free base and is used to produce yellow pigments.

Safety Profile

Suspected carcinogen with experimental carcinogenic and tumorigenic data. When heated to decomposition it emits very toxic fumes of NO, and Cl-.

2,2',5,5'-Tetrachlorobenzidine Preparation Products And Raw materials

Preparation Products

2,2',5,5'-TetrachlorobenzidineSupplier

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