molecular formula : 2pbo•pbhpo3•1/2h2o 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 200℃, and yellow at 450℃. technical index : testing items excellent grade i appearance white power white power lead oxide (pbo)% 90.0±1.0 90.0±1.0 phosphorus acid (hpo3), % 11.0±1.0 11.0±1.0 moisture,%≤ 0.3 0.4 fineness(mesh of 0.075mm),% ≥ 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.