Dibasic Lead Phosphite (HG/T 2239-92)

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Property : White micro-crystal powder, poisonous, insoluble in water and ordinary solvents ,soluble in hydrogen chloride and nitric acid. It becomes gray-black at about 200degrees, and yellow at 450 degrees.
Technical index :
Testing items Excellent Grade I
Appearance White power White power
Lead oxide (PbO)% 90.0?.0 90.0?.0
Phosphorus acid (HPO3), % 11.0?.0 11.0?.0
Moisture,%(less than) 0.3 0.4
Fineness(mesh of 0.075mm),% (more than) 99.7 99.6
Application :
It is a thermal stabilizer for PVC plastics, with shield function for ultraviolet light, with effect of anti-oxidizing agent and excellent weather resistance and sustaining reduction ability; with specific stable function for wax chloride; with nice primary-coloring resistance; proper service can avoid color shading. It has whitening effect for white plastics. It is also used as activator for foaming agent. It is mainly used for non-transparent soft and hard products, cable granules, etc.
Package : Plastic bag, lined with PE bag, 25KG weight.
Storage and Transportation :
Store in cool, ventilated and dry places. Protecting from insolation and moisture while transported.