| CAS
NO. |
91-94-1 |
|
| EINECS
NO. |
202-109-0 |
| FORMULA |
NH2ClC6H3C6H3ClNH2 |
| MOL
WT. |
253.13
|
| H.S.
CODE |
2921.59 |
| TOXICITY |
|
| SYNONYMS |
3,3'-Dichloro-4,4'-Biphenyldiamine;
o,o'-Dichlorobenzidine; |
| 4,4'-Diamino-3,3'-Dichlorobiphenyl; Dichlorobenzidine;
DCB; C.I. 23060;
3,3'-Dichlorobiphenyl-4,4'-diamine; 3,3'-Dichloro-4,4'-Diaminobiphenyl;
3,3-Dichlorobenzidine; 3,3'-Dichloro(1,1'-biphenyl)-4,4'-diamine;
3,3'-Dichlorobenzidin (Czech); 3,3'-Dichlorobenzidina
(Spanish); 3,3'-二氯對二氨基聯苯
(Chinese); |
|
SMILES |
|
|
CLASSIFICATION
|
|
|
PHYSICAL AND CHEMICAL PROPERTIES
|
| PHYSICAL
STATE |
white to grey white
crystalline powder
|
| MELTING POINT |
132
- 133 C |
| BOILING
POINT |
368
C |
| SPECIFIC GRAVITY |
|
| SOLUBILITY
IN WATER |
Insoluble |
| AUTOIGNITION |
350
C |
| pH |
|
| VAPOR DENSITY |
2.86 |
| NFPA RATINGS |
|
|
REFRACTIVE
INDEX
|
|
| FLASH
POINT |
|
| STABILITY |
Stable under ordinary conditions. Oxidizes in light |
|
APPLICATIONS
|
3,3'-Dichlorobenzidine,
white to grey white
crystalline powder with a mild odor, is a synthetic chlorinated primary
aromatic amine. It does not occur naturally. Commercially, hydrochloride salt
forms are available for stability, Though 3,3'-Dichlorobenzidine does not evaporate, it is unstable in water, in air
and if exposed to
sunlight. It is used in the manufacture of polybenzimidazole used in protective clothing applications
like firefighters' apparels, welders'
garments and rescues garments. 3,3'-dichlorobenzidine and its salts and some
derivatives are primarily used as an
intermediate in the manufacture of pigments (mainly yellow and some red and orange
) for printing inks, coatings, textiles, paints,
rubber, leather, plastic, and related industries. It is also used in the analytical test
to determine the presence of gold. Curing agent in the synthesis of polyurethane is
one of applications. Benzidine
is an arylamine compound with the structure of biphenyl
having two amine groups at para position each. It is
a white to slightly reddish crystalline powder turns
dark on exposure to air and light; melting point of
128 C. This compound decomposes on heating and reacts
violently with strong oxidants, particularly nitric
acid. It is produced by the action of acids on hydrazobenzene.
Benzidne forms a blue precipitate with hemoglobin. It
was used in testing for occult blood, its use is now
limited because of cancer suspect. It is important
in azo dye production due to strong fix to cotton. It
and its derivatives have
active applications
in the synthesis of dyes, pigments, paints, rubber compounding
agents and wide range of organic chemicals.
|
Product
|
CAS
RN
|
| 2,2'-Dichlorobenzidine |
84-68-4 |
| 3,3'-Dichlorobenzidine |
91-94-1 |
| 3,3'-Dichlorobenzidine
dihydrochloride |
612-83-9 |
| Dichlorobenzidine |
1331-47-1 |
| p-Dianisal-3,3'-dichlorobenzidine |
3540-78-1 |
| 2,2'-Dichlorobenzidine
dihydrochloride |
5742-07-4 |
| N,N'-Bisbenzylidene-3,3'-dichlorobenzidine |
10147-75-8 |
| 3,5-Dichlorobenzidine
|
63390-11-4 |
| 3,3'-Dichlorobenzidine sulphate
(1:1) |
64414-68-2 |
| 3,3'-Dichlorobenzidine
sulphate (1:2) |
64969-34-2 |
| 2,2'-Dichlorobenzidine sulfate (1:1) |
70146-07-5 |
| N-Acetyl-3,3'-dichlorobenzidine |
72732-23-1 |
| 3,3'-Dichlorobenzidine diethyl malonate hydrazone |
103124-60-3 |
|
| SALES
SPECIFICATION |
|
3,3-DICHLOROBENZIDINE |
|
APPEARANCE
|
white to grey white
crystalline powder
|
| PURITY |
99.0%
min
|
|
INDIVIDUAL
IMPURITIES
|
0.5%
max
|
|
MELTING POINT
|
130
C min
|
|
3,3-DICHLOROBENZIDINE
HYDROCHLORIDE |
|
APPEARANCE
|
white to grey wet
powder
|
|
CONTENT
|
93.0%
min
|
|
ACID
VALUE
|
22.0
- 23.0%
|
|
AMINE
VALUE
|
72.0%
min
|
| TRANSPORTATION |
| PACKING |
20kg
in bag |
| HAZARD CLASS |
6.1
(Packing Group: III) |
| UN
NO. |
2811 |
| OTHER
INFORMATION |
|
Hazard Symbols: T N, Risk Phrases:
45-21-43-50/53, Safety
Phrases: 53-45-60-61 |