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Phosphorous acidCAS: 13598-36-2

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Synonyms: Orthophosphorous acid; Phosphorousacidcrystalline; Phosphonic acid Classification: Inorganic Acids
EINECS: 237-066-7 Molecular Formula: H3PO3
Melting Point: 73℃ Boiling Point: 200℃
Stability: Stable. Incompatible with strong bases. Hygroscopic. Water Solubility: SOLUBLE
Refractive index: Flash Point: 200°C
Purity: 99% Appearance: White Powder
HazardClass: 8 Brand Name:
worldwide: America Brazil: Asia
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Detailed Description

 Chemical name: Phosphorous Acid             

Molecular Formula: H3PO3                 
Molecular Weight: 82.0                    
CAS Number:13958-36-2                      
Typical Properties:


White Powder

Purity (%)

98.0 min

Chloride (%)

0.01 max

SO42 (%)

0.008 max

PO42 (%)

0.2 max

Iron (as Fe, ppm)

10.0 max


Phosphorous acid can be used as  reducing agent and pesticide intermediates. Used in the manufacture of nylon whitening agent, plastic stabilizers, synthetic fiber, dibasic lead phosphite, glyphosate, water treatment agent ATMP and Potassium dihydrogen phosphite. And it is also the production raw material of potassium hydrogen phosphate, synthetic fiber, plastic stabilizer and organic phosphonic pesticide . It can be used as a stabilizer of polycarbonate, also used in the manufacture of nylon 1010 antioxidant, can also be used for production of high efficient water treatment agent ATMP.



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