1. Product Introduction

Phosphorous acid solid, Phosphorous acid solution

UN No: 2834   8.1 Class 

Phosphorous Acid other names hydrogen phosphonate, Dihydroxyphosphine oxide, is white colorless crystal.It mainly used in the production of basic lead phosphite, which is a stabilizer in PVC and related chlorinated polymers.

2. Specification or COA

Name: Phosphorous acid solid, Phosphorous acid solution

Appearance: white colorless crystal, liquid

Main content (as H3PO3): 98% min

Iron (as Fe): 0.002% max

Chloride (as Cl): 0.01% max

Sulphate (as SO4): 0.006% max

Phosphate (as PO4): 0.1% max

Heavy metal (as Pb): 0.001% max

3. Product application

Phosphorous Acid is used as reducing agent, nylon whitener, plastic thermometer, synthetic fiber in 

plastic industry; as materials for producing weedicide, bactericide and water stabilizer in pesticide industry.

4. Packing & Delivery

Standard export neutral packing in 25kg/bag, 20’FCL=22T. or 20’Iso-tank or plastic coated metal pail, or according to customers requirement.