*Content of lead superoxide(PbO2)%:33.9
*Content of lead tetroxide(Pb3O4)%:97
*Erapoyate substance 105C%:0.2
*Remains on sieve(63m) %:0.75
*Unsoluble in nitric acid %:0.1
*Content of iron sesquioxide(Fe2O3)%:0.005
*Content of copper oxide(CuO) %:0.002