Benzidine is the trival name for 4,4'-diaminobiphenyl which two hydrogen atoms
on biphenyl molecules are replaced by amines 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 diphenyldrazine. Benzidine can be classified as arylamine
which one or more of the hydrogen atoms are replaced by aromatic groups such as
homologues of aniline, p-aminobiphenyl, benzidine, and naphthylamine. Some
arylamines are carcinogenic and the uses are restricted. Benzidne forms a blue
precipitate with hemoglobin. Hemoglobin catalyzes the oxidation of benzidine to
a polymer by hydrogen peroxide, which gives the blue color. This was the common
screening test for occult blood. But the use is restricted due to cancer
suspect. Benzidine is the starting material in the dye manufacturing. Numerous
substituted group on the benzidine ring system as well as amine groups offer
important roles to each characteristic colours directly and in preparing next
target colorants. It is important in azo dyes 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. Biphenyl structure of benzidine also provide the application in
luminescence chemistry, spectrophotometric analysis, molecular chemistry, and as
a stating material for organometallic-complexes. Benzidine molecules are used in
dye production industry and certain other industrial fields. Benzidine molecules
include:
Benzidine |
CAS
RN
|
2,2',5,5'-Tetrachlorobenzidine
|
15721-02-5 |
2,2'-Biphenyldiamine
|
1454-80-4 |
2,2'-Dichloro-5,5'-dimethoxybenzidine
|
5855-70-9 |
2,2'-Dichlorobenzidine
|
84-68-4 |
2,2'-Dichlorobenzidine
dihydrochloride |
5742-07-4 |
2,2'-Dichlorobenzidine sulfate |
70146-07-5 |
2,2'-Dichloro-N,N'-bis(4-methoxybenzylidene)-4,4'-bianiline
|
3540-78-1 |
2,2'-Dimethyl(1,1'-biphenyl)-4,4'-diamine |
84-67-3 |
2,2''-Dimethylbenzidine
Hydrochloride |
96196-27-9 |
2,2'-Dinitrobenzidine
|
5855-71-0 |
2-Aminobenzidine |
2835-69-0 |
2-Methyl-N,N'-diacetylbenzidine |
63991-70-8 |
2-Nitrobenzidine
|
2243-78-9 |
3,3',5,5'-Tetrachlorobenzidine |
41687-08-5 |
3,3',5,5'-Tetrafluorobenzidine |
42794-87-6 |
3,3',5,5'-Tetramethylbenzidine
|
54827-17-7 |
3,3',5,5'-Tetramethylbenzidine dihydrochloride
hydrate |
64285-73-0 |
3,3',5-Trichlorobenzidine
|
63390-12-5 |
3,3'-Benzidine dicarboxylic acid disodium salt |
16993-94-5 |
3,3'-Benzidinedisulfonic acid |
3365-90-0 |
3,3'-Diacetylbenzidine |
98805-29-9 |
3,3'-Diaminobenzidine
|
91-95-2 |
3,3'-Diaminobenzidine
tetrahydrochloride |
7411-49-6 |
3,3'-Dibromobenzidine
|
34237-98-4 |
3,3'-Dicarbomethoxybenzidine |
15403-45-9 |
3,3'-Dicarboxybenzidine
|
2130-56-5 |
3,3'-Dichlorobenzidine
|
91-94-1 |
3,3'-Dichlorobenzidine
diethyl malonate hydrazone |
103124-60-3 |
3,3'-Dichlorobenzidine
dihydrochloride |
612-83-9 |
3,3'-Dichlorobenzidine
sulfate |
64414-68-2 |
3,3'-Dichlorobenzidine
sulphate |
64969-34-2 |
3,3'-Dichlorobenzidine
sulphate |
74332-73-3 |
3,3'-Dichloro-N,N'-diacetylbenzidine
|
35958-51-1 |
3,3-Dichloro-N-acetylbenzidine
|
72732-23-1 |
3,3'-Difluorobenzidine
|
448-97-5 |
3,3'-Dihydroxybenzidine
|
2373-98-0 |
3,3'-Dimethoxybenzidine
diethyl malonate hydrazone |
103124-59-0 |
3,3'-Dimethoxybenzidine-4,4'-diisocyanate
|
91-93-0 |
3,3'-Dimethyl-N,N'-diacetylbenzidine
|
3546-11-0 |
3,3'-Dimethyl-N-acetylbenzidine
|
3546-13-2 |
3,3'-Dinitrobenzidine |
6271-79-0 |
3,5-Dichlorobenzidine
|
63390-11-4 |
3,7-Dibenzothiophenediamine
5,5-dioxide |
30508-11-3 |
3-Bromobenzidine |
108238-11-5 |
3-Chlorobenzidine |
63390-10-3 |
3-Fluorobenzidine |
108543-17-5 |
3-Methoxybenzidine
|
3365-87-5 |
3-Nitrobenzidine
|
61841-39-2 |
4,4'-Diaminooctafluorobiphenyl |
1038-66-0 |
Benzidine
|
92-87-5 |
Benzidine
dihydrochloride |
531-85-1 |
Benzidine
hydrochloride |
14414-68-7 |
Benzidine acetate
|
36341-27-2 |
Benzidine diethyl malonate
hydrazone |
103124-62-5 |
Benzidine N-glucuronide
|
85559-86-0 |
Benzidine orange
|
3520-72-7 |
Benzidine sulfate
|
531-86-2 |
Benzidine sulfone
|
6259-19-4 |
Benzidine sulphate
|
21136-70-9 |
Benzidine-2,2'-disulfonic acid |
117-61-3 |
Benzidine-3-sulfonic acid
|
2051-89-0
|
Benzidine-4,4'-diimine
|
6050-16-4 |
Bis(diazo)benzidine
|
5957-03-9 |
C.I.
Direct Black 38
|
1937-37-7 |
C.I.
Direct Blue 6
|
2602-46-2 |
C.I.
Direct brown 95
|
16071-86-6 |
C.I. Pigment Red 38
|
6358-87-8 |
C.I. Pigment yellow 12 |
6358-85-6 |
C.I. Pigment Yellow 13
|
5102-83-0 |
C.I. Pigment Yellow 14
|
5468-75-7 |
Diacetylacetotolidide |
91-96-3 |
Diazobenzidine
|
3019-12-3 |
Dicarboxidine dihydrochloride |
56455-90-4 |
Dicarboxydine
|
73758-56-2 |
Dichlorobenzidine |
1331-47-1 |
Dimethoxybenzidine
|
1331-53-9 |
N-(3-Sulfopropyl)-3,3',5,5'-tetramethylbenzidine
sodium salt |
102062-36-2 |
N-(Deoxyguanosin-8-yl)benzidine
|
82682-91-5 |
N,N,N',N'-Tetraethylbenzidine |
6860-63-5 |
N,N,N',N'-Tetrakis(4-aminophenyl)benzidine
|
3547-23-7 |
N,N,N',N'-Tetramethylbenzidine
|
366-29-0 |
N,N'-Diacetylbenzidine
|
613-35-4 |
N,N'-Dibenzylidene-2,2'-dichloro-4,4'-bianiline
|
10147-75-8 |
N,N'-Dimethylbenzidine |
2810-74-4 |
N,N'-Dimethylbenzidine |
2810-74-4 |
N,N'-Diphenylbenzidine |
531-91-9 |
N,N'-Diphenylbenzidine
|
531-91-9 |
N-Acetylbenzidine
|
3366-61-8 |
N-Acetyldianisidine |
83690-97-5 |
N-Hydroxy-N,N'-diacetylbenzidine
|
71609-22-8 |
N-Hydroxy-N'-acetylbenzidine
|
71609-23-9 |
N-Vanillylidenebenzidine |
73688-67-2 |
o-Dianisidine |
119-90-4 |
o-Dianisidine
dihydrochloride |
20325-40-0 |
o-Dianisidine
hydrochloride |
111984-09-9 |
o-Tolidine |
119-93-7 |
o-Tolidine
dihydrofluoride |
41766-75-0 |
o-Tolidine dihydrochloride |
612-82-8 |
o-Tolidine hydrochloride |
7563-59-9 |
Tetramethylbenzidine bis-chloro-p-nitrobenzylate |
24660-78-4 |
Tetramethylbenzidine bis-ethiodide |
24660-74-0 |
Tetramethylbenzidine bis-iodobenzylate |
24660-76-2 |
Tetramethylbenzidine bis-methylmethosulfate |
24702-66-7 |
Tetramethylbenzidine |
34314-06-2 |
Tetraphenylbenzidine
|
15546-43-7 |
|