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p-Toluenesulfonic acid monohydrate CAS No. 6192-52-5
p-Toluenesulfonic acid monohydrate (CAS. 6192-52-5)
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p-Toluenesulfonic acid (Para-toluenesulfonic acidPTSA or pTsOH) is an organic compound with the formula CH3C6H4SO3H. It is a white solid that is soluble in water, alcohols, and other polar organic solvents. P-Toluene sulfonic acid PTSA is colorless or white ,and needle shaped crystal or crystallne powder. It dissolves in water, ethanol, aether, benzene, has medium toxicity, and is pungent to the skin, eye. Melting point:  38 °C(anhy.)103.5 °C(mono.)Solubility: water soluble,H2O: 0.1 g/mL, clear.

p-Toluenesulfonic acid PTSA divides into PTSA monohydrate CAS 6192-52-5 and PTSA anhydrous CAS 104-15-4.


 Item   Tech  Pharma  Extracted  Reagent
 Total acidity %(sulfonic acid)  93/95  95/97  97/99  98/99
 Free acid, %≤  3   2/1  0.7/0.5   0.1
 Water, %≤  4/2  3.5  2.3  1.9/0.9
 Fe++, ppm≤  70/50  50/30  30/20  20/10
 Ignition residue, %≤  /  0.2  0.2  0.02
 Alcohol solution test  /  Qualified  Qualified  Qualified
 Water solution test  /  Qualified  Qualified  Qualified
 Color  White   White  White  White 


Organic synthetic intermediate 
- Explosive 

- Resin  
- Polyether  
- Cosmetics  
- Tobacco  
- Food  

Catalyst and Stabilizer
- Esterification  
- Dewatering  
- Alkylation  
- De-alkyl  
- Aggregation  

Pharma industry 
- Doxycycline  
- Dipyridamole  
- Naproxen  
- Amoxicillin  


25kg per bag, 20mt per 20"FCL without pallets 

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