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Phosphorous Acid(CAS:13598-36-2)

  • Packing   25kg/bag
  • Molecular formula   H3O3P
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Phosphorous acid Basic information

Product Name: Phosphorous acid

Phosphorous acid 99%

Phosphorous acid 98 %

Phosphorous acid 50 %

CAS: 13598-36-2
MW: 82
EINECS: 237-066-7
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Phosphorous acid Structure

Phosphorous acid Chemical Properties


98.5% min


0.005% max

Chloride (Cl)

100ppm max

Phosphate (PO4)

0.2% max

Sulphate (SO4)

0.008% max


White crystals 

Safety Information
Hazard Codes  C
Risk Statements  22-35
Safety Statements  26-36/37/39-45
RIDADR  UN 2834 8/PG 3
WGK Germany  1
RTECS  SZ6400000
HazardClass  8
PackingGroup  III
Phosphorous acid Usage And Synthesis
Description Phosphorous acid is an intermediate in the preparation of other phosphorous compounds. It is a raw material to prepare phosphonates for water treatment such as iron and manganese control, scale inhibition and removal, corrosion control and chlorine stabilization. The alkali metal salts (phosphites) of phosphorous acid are being widely marketed either as an agricultural fungicide (e.g. Downy Mildew) or as a superior source of plant phosphorous nutrition. Phosphorous acid is used in stabilizing mixtures for plastic materials. Phosphorous acid is used for inhibiting high-temperature of corrosion-prone metal surfaces and to produce lubricants and lubricant additives.

Chemical Properties white crystalline solid
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