molecular formula : 3pbo• pbso4 •h2 o specifications : testing items excellent grade i appearance white power white power lead oxide (pbo), % 89.0±1.0 89.0±1.0 sulfur trioxide(so3)),% 7.5-8.5 7.5-8.5 heating loss,% ≤ 0.3 0.4 fineness(mesh of 0.075mm)%≥ 99.7 99.6 application : the product is the most widely used thermal stabilizer for pvc plastics with strong ability of cohesion with hydrogen chloride, good long-term thermal stability, excellent electrical insulation. it has the ability of white pigment with strong covering power , tolerate weather-resistant property and mainly used in non-transparent soft and hard products and cable material. coordination effects can be obtained when used with a little amount of lead dibasic phosphite or lead dibasic stearate. package : plastic bag, lined with pe bag, 25kg weight.