Dblp, 2pbo. Pbhpo3properties appearancewhite powdermolecular weight743specific gravity6. 8 to 7. 0refractive index2. 25total lead as pbo88, 89%moisture content0. 5% maxbulk density, Free flowing0. 5, 0. 7 gm/mlparticle size 400 mesh 99% minapplication largely applied in light and thermal stabilizing agent in pvc formulationanti, Oxidising and ultra, Violet screening for vinyl and chlorinated resinscommonly utilized in rigid pvc profiles, Pipes and pvc compounds. Also used in plasticsrecommended dosage 0. 75, 4 phrto be used in conjunction with other external and internal lubricants such as lead stearate, Dbls, Calcium stearate, Stearic acid and paraffin wax.