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2-Amino-5-chloro-4-methylbenzenesulfonic acid

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2-Amino-5-chloro-4-methylbenzenesulfonic acid Basic information

Product Name:
2-Amino-5-chloro-4-methylbenzenesulfonic acid
Synonyms:
  • LAKE RED C AMINE
  • CLT
  • 6-CHLORO-3-TOLUIDINE-4-SULFONIC ACID
  • 6-CHLORO-3-AMINO TOLUENE-4-SULFONIC ACID
  • 4-CHLORO-M-TOLUIDINE-6-SULFONIC ACID
  • 4-CHLORO-5-METHYLANILINE-2-SULFONIC ACID
  • 5-AMINO-2-CHLORO-4-SULFOTOLUENE
  • 5-AMINO-2-CHLOROTOLUENE-4-SULFONIC ACID
CAS:
88-53-9
MF:
C7H8ClNO3S
MW:
221.66
EINECS:
201-839-7
Product Categories:
  • Intermediates of Dyes and Pigments
  • API Intermediate
  • Organics
Mol File:
88-53-9.mol
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2-Amino-5-chloro-4-methylbenzenesulfonic acid Chemical Properties

Density 
1.553±0.06 g/cm3(Predicted)
Water Solubility 
Practically insoluble in water
pka
-1.59±0.50(Predicted)
form 
Powder
color 
White to Light yellow to Light orange
LogP
-0.83 at 23℃ and pH2.6-2.7
CAS DataBase Reference
88-53-9(CAS DataBase Reference)
EPA Substance Registry System
Benzenesulfonic acid, 2-amino-5-chloro-4-methyl- (88-53-9)
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Safety Information

Risk Statements 
36/37/38
Safety Statements 
26-36/37/39
RTECS 
DB4807000
HS Code 
2921.43.9090
Hazardous Substances Data
88-53-9(Hazardous Substances Data)

MSDS

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2-Amino-5-chloro-4-methylbenzenesulfonic acid Usage And Synthesis

Description

2-Amino-5-chloro-4-methylbenzenesulfonic acid is a colorless to slightly reddish crystalline powder. The compound is obtained by chlorination of p-toluenesulfonic acid to form 3- chloro-4-methylbenzenesulfonic acid, subsequent nitration of this acid to a mixture of nitro isomers, precipitation of the 2-chloro-4-methyl-6-nitrobenzenesulfonic acid with sodium chloride solution, and, finally, Bechamp reduction of the nitro group with iron and acetic acid. The compound is used as Lake Red C and CLT Acid as a diazo component for azo dyes and azo pigments.

Chemical Properties

White to pink powder. Essentially insoluble as free acid; soluble as sodium or ammonium salt.

Uses

Intermediate for azo pigments.

2-Amino-5-chloro-4-methylbenzenesulfonic acid Preparation Products And Raw materials

Raw materials

Preparation Products

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