Dibasic Lead Phosphite

Molecular formula :2PbO.PbHSO3.H2O

Molecular weight : 742.57

Properties
White powder, toxic, sweet, specific density 6.94, insoluble in water, soluble in chlorhydric acid and nitric acid. It becomes black at 200 degree , having sustained reducing force, as an oxidization prevention agent, it has excellent performance of resistance to ultra violet discoloration, cold hardiness and resistance to ageing.

Application
It is mainly used as stabilizer for non-transparent PVC products, having excellent performance of electrical insulation, weather resistance and ultraviolet absorption.

Specification
Index First-grade product
Appearance White powder without obvious mechanical impurity
PbO,% 90?.0
H3PO3,% 11?.0
Moisture,%< 0.4
Oversize product above 200 eye.%< 0.3

Package
Package with braided, PE bag insider lining, 25kg weight.
Matters need attentions on storage and transportation
The product should be handled accoarding to the toxic materials. It should be kept in dryeration storage room to keep from wetting and polluting by H2S. The container must be sealed to keep from rain. It must not be transported together with food-stuffs. Notice that the product is combustible when transported.