2-Aminotoluene-5-sulfonic acid Chemical Properties

Melting point:

290°C

Density 

1.3553 (rough estimate)

refractive index 

1.6100 (estimate)

pka

pK1: 3.125 (25°C)

form 

powder

color 

Faint beige to faint red/orange

Water Solubility 

5g/L(20 ºC)

LogP

0.076 at 25℃

CAS DataBase Reference

98-33-9(CAS DataBase Reference)

EPA Substance Registry System

Benzenesulfonic acid, 4-amino-3-methyl- (98-33-9)

Safety Information

Hazard Codes 

T

Risk Statements 

45-34

Safety Statements 

53-26-36/37/39-45

RIDADR 

2811

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

HS Code 

2921420090

MSDS

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2-Aminotoluene-5-sulfonic acid Usage And Synthesis

Description

2-Aminotoluene-5-sulfonic acid is prepared from o-toluidine and 98 % H2SO4 via the sulfate, which is then baked. The sodium salt can be isolated after liming and precipitation of calcium sulfate. The solution can be used directly in the manufacture of dyes.

Physical properties

White to Pale-yellow to Yellow-brown Sticky Oil to Semi-Solid.

Flammability and Explosibility

Not classified

2-Aminotoluene-5-sulfonic acid(98-33-9)Related Product Information

• 4-Amino-benzenesulfonic acid monosodium salt
• p-Toluenesulfonic acid
• Sodium p-toluenesulfonate
• Sodium xylenesulfonate
• Sulfamic acid
• 4-Amino-3-methylphenol
• Nickel bis(sulphamidate)
• SODIUM P-TOLUENESULFONATE
• Ethyl 2-(Chlorosulfonyl)acetate
• Sulfanilic acid
• 2,4-Xylenesulfonic acid
• 2-AMINO-PYRIMIDINE-5-CARBOXYLIC ACID ETHYL ESTER
• 6-Aminopyridine-2-carboxylic acid
• 2-Aminopyrimidine-5-carboxylic acid
• Indigo Carmine
• 2-AMINOTOLUENE-5-SULFONIC ACID SODIUM SALT
• ACID YELLOW 54
• ACID ORANGE 8