Yingkou Cynovate Chemical Technology Co., Ltd.
Phosphorous Acid

Phosphorous Acid

[CAS No.] 13598-36-2

[Molecular formula] H3PO3

It is used as a reducing agent and pesticide intermediate in the manufacture of brightener for nylon, plastic stabilizer, synthetic fiber, dibasic lead phosphite, glyphosate, water treatment agent ATMP and potassium dihydrogen phosphate, etc. It is also used as a stabilizer for polycarbonate and an antioxidant for nylon 1010.


Item  Index
Top grade

First grade

Appearance White crystalline powder White crystalline powder
Purity%≥ 99 99


0.001 0.01
Iron (Fe)%≤ 0.001 0.002
Phosphate (PO4) 0.1 0.2
Sulphate (SO4) 0.0005 0.008
If the specifications are changed, the company will not notice especially!


Storage and transport condition: 
It is stored in a cool, dry, well ventilated place, away from acids and strong bases.

Product package:
25kg/bag,500kg/bag,1000kg/bag(inner bag: PE, outer bag: PP)


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