3,3'-Dimethylbenzidine dihydrochloride Chemical Properties

Melting point:

>300°C

solubility 

DMSO (Slightly, Heated), Methanol (Slightly)

form 

Solid

color 

white to light yellow

Water Solubility 

Soluble in water.

Sensitive 

Air Sensitive

CAS DataBase Reference

612-82-8(CAS DataBase Reference)

EPA Substance Registry System

3,3'-Dimethylbenzidine dihydrochloride (612-82-8)

Safety Information

Hazard Codes 

T,N

Risk Statements 

45-22-51/53-68

Safety Statements 

53-45-61

RIDADR 

UN 3077 9/PG 3

WGK Germany 

3

RTECS 

DD1226000

F 

3-8-9

TSCA 

Yes

HazardClass 

6.1(b)

PackingGroup 

III

HS Code 

29215900

MSDS

• Language:English Provider:3,3'-Dimethylbenzidine dihydrochloride
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
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3,3'-Dimethylbenzidine dihydrochloride Usage And Synthesis

Chemical Properties

light beige to grey-beige crystalline powder

Uses

It is an indicator.

Uses

o-Tolidine dihydrochloride is used as a sensitive colorimetric reagent for gold and for free chlorine in water.

General Description

Light tan powder.

Air & Water Reactions

Soluble in water.

Reactivity Profile

Acidic organic/inorganic salts, such as 3,3'-Dimethylbenzidine dihydrochloride, are generally soluble in water. The resulting solutions contain moderate to high concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.

Fire Hazard

Flash point data for 3,3'-Dimethylbenzidine dihydrochloride are not available, but 3,3'-Dimethylbenzidine dihydrochloride is probably combustible.

Safety Profile

Suspected carcinogen with experimental carcinogenic data. Mutation data reported. When heated to decomposition it emits very toxic fumes of HCl and NOx

3,3'-Dimethylbenzidine dihydrochloride(612-82-8)Related Product Information

• O-Tolidine
• Biphenyl-4,4'-dicarboxylic acid
• 3,3',5,5'-Tetramethylbenzidine dihydrochloride
• AMINOGUANIDINE HYDROCHLORIDE
• N,N-Dimethylformamide
• Benzidine
• N,N-Dimethyl-1,4-phenylenediamine
• 2,2'-Benzidinedisulfonic acid
• Dimethyl sulfoxide
• Pigment Yellow 12
• Aminoacetonitrile hydrochloride
• 4,4'-Dimethylbiphenyl
• Benzidine dihydrochloride
• D-Glucosamine hydrochloride
• Linocaine hydrochloride
• Dihydrochloride
• 3,3'-Dimethyldiphenylamine
• 4,4'-DIMETHYLBIPHENYL