1、P-toluenesulfonic acid

Chinese alias: p-methylbenzene sulfonic acid; 4-toluene sulfonic acid; 4-methylbenzene sulfonic acid; Toluene-4-sulfonic acid

English name: P-Toluene Sulfonic acid

CAS number: 104-15-4; 6192-52-5

Subformula: C7H8O3S•H2O

Molecular weight: 190.2; 170.20

Molecular structure:

2、

Product physical and chemical indicators

United Nations number: 2585

Product code: 2904100000

Density: 1.34/cm3

soluble in water

Physical and chemical properties:

Properties Colorless monoclinic flake or columnar crystal.

Melting point 106~107℃

Boiling point 140℃

Soluble in ethanol and ether, soluble in water and hot benzene.

Executive standard: Q/320511 XXH01-2001

Application: Used in medicine to synthesize doxycycline (cicycline). Hydropyridoxycycline, doxycycline, etc.), dipyridamine, amoxicillin, 

cefadoxalexin D860 pharmaceutical intermediates and other important raw materials; It is widely used in the organic chemical industry. 

Acrylates, textile auxiliaries, photographic films, stabilizers for polymerization reactions and catalysts for organic synthesis (esters); It is

 widely used as curing agent in resin, coating, wood-based panel, casting, paint and other industries, and the fixed speed is fast, and 

the paint film does not change color; It is also an important raw material for synthesis of ethoxyquinoline. It is also widely used in the 

pesticide synthesis industry (dicofol) chloramine T, pigment; CLT acid, etc.