... ur approval Application: ceramic, glass, paint, battery industrY Materialize character: Indissoluble in water and alcohol ... 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 ...