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HEBEI ZHONGAO CHEMICALS EXP.&IMP. CO.,LTD. --CHINA
Item Standard:
PbO: 99.3%min
Free Pb: 0.1%max
Lead peroxide: 0.05%max
Insoluble in nitric acid: 0.1%max
Residue through 180 mesh screen: 0.2%max
Moisture: 0.2%max
Fe2O3: 0.005%max
CuO: 0.002%max
Molecular formula: PbO
It should be stocked in dry place, avoid being stocked in wet place and it should be stocked separately from acid and alkali. |