50% Hypophosphorous Acid


Prevention of discoloration of fat and resins, reducing agent, catalyst and surface preparation agent.

Specifications and other data

Chemical formula H3PO3
Molecular mass 66.00
CAS NO. 6303-21-5
Appearance Colorless or pale yellow liquid
Aqueous solution
Chloride (Cl)
Sulfate (SO4)
Calcium (Ca)
Arsenic (As) 0.001% max.
Heavy metal (Pb) 0.002% max.
Iron (Fe)
Product content 50.0-52.0%
PH 1.4
Solubility 50%
Specific gravity 1.22
Special attention regarding storage Store under sealed conditions, away from heat and moisture.

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