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p-Toluenesulfonic acid
CAS No:104-150-4,6192-52-5(对甲苯博天堂开户注册—水合物)

UN NO.:2585
HS Code: 2904100000
Specifications and Indicators

Project/Indicators

母液

粗品

Industrial grade

Pharmaceutical grade

Refining grade

Total acidity ≥% (fold sulfonic acid)

40-60

90

93

95

97

Free acid ≤%

20-40

3-6

3

2/1

0.7/0.5

Water (excluding crystal water) ≤%

/

4-12

4/2

3.5

2.3

Fe++ ≤ppm

/

/

70/50

50/30

30/20

burning residue ≤%

/

/

/

0.2

0.2

Melting point (°C)

/

/

/

/

100

Color

Yellow and Black

White, Gray

White

White

White

Product use:

1, used in medicine, pesticides, dyes and detergents, also used in plastics and printing coatings
2, used as a chemical reagent, also For dyes, organic synthesis  
3, used as medicine (such as doxycycline), pesticide An intermediate such as dicofol or a dye. Also used in detergents, plastics, coatings, etc.   
4, < /FONT> p-toluenesulfonic acid is an acid catalyst commonly used in organic synthesis. By using it to neutralize sodium hydroxide to obtain sodium p-toluenesulfonate, and then reacting with phosphorus pentachloride, p-toluenesulfonyl chloride can be obtained. The latter is used in the nucleophilic substitution reaction and also as a protecting group for the alcoholic hydroxyl group.

Packaging and Storage:

Packages are two-layer film bags lined with plastic woven bags, each bag has a net weight of 25 kg.

The warehouse is ventilated and dried at low temperature;  stored separately from alkali.


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