Lead (Pb) Leads 
1 Physical properties: 
Atomic weight: 207.2 
Electronegativity: 2.33 
Density: 11.34 g/cm3 (20 ℃) 
Melting Point: 327.46 ℃ 
Boiling Point: 1749 ℃ 
2, Specification: 
Chemical purity: 
Purity lead: Pb-05 more than 99.999% purity, silver, aluminum, arsenic, bismuth, cadmium, copper, iron, magnesium, nickel, antimony, tin, zinc total impurity content of less than 10ppm; 
Ultrapure Lead: Pb-06 more than 99.9999% purity, silver, aluminum, arsenic, bismuth, cadmium, copper, iron, magnesium, tin total impurity content of less than 1ppm; 
Purity lead: Pb-07 99.99999% purity, silver, aluminum, bismuth, cadmium, copper, iron, magnesium, nickel, tin, zinc total impurity content of less than 0.1ppm. 
3, the physical traits: rods, ingots, sheets, tablets, pills. 
4, use: 
Mainly for the preparation of compound semiconductors, PbMoO4 acousto-optical crystal, PbF2, PbTe, PbS, PbSe, Pbo, Pba, PbO2, PbxSn1-xTe like cooling elements, infrared photoelectric conversion parts, components and solder temperature difference is high, nuclear protection, . 
5, Packing: Polyester film after film vacuum packaging or packaging plastic polyethylene bottles vacuum packaging.