... 3. PVC pipe 4. PVC profile 5. compound stabilizer Tribasic Lead Sulfate Molecular formula: 3PbO ·PbSO4·H2OMolecular weight: 990.86Property:It ... powder without evident mechanical impurityWhite powder without evident mechanical impurity Lead oxide (PbO), % 89.0±1.0 89.0±1.0Sulfur ... .40Fineness(0.075mesh), %≥99.7099.60Whiteness, % ≥90.090.0 Tribasic Lead Sulfate ( TBLS )