... paint,optical glass,ceramics and store battery etc. Item Standard Content of lead dioxide Pb3O4 , ≥ %97Content of lead tetroxide PbO2 , ≥ %33. ... 9Evaporation substance 105 , ≤ %0.2Remains on sieve 63 μ m , ≤ %0.75Unsoluble in nitric acid ... The best of our wishes, is to meet your requirements! We hope to hear from you soon, with specific ...