1. MATERIAL OVERVIEW Appearance: Hard and brittle, a silvery ash luster in trapezium-like bars.Melt germanium ingots cross-section is shaped as a trapezium. Characteristics: Lustrous, hard, grayish-white solid metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Purified germanium is a 'p-type' semiconductor material. Conductivity depends largely on added impurities. Attacked by nitric acid and aqua regia, but stable in water, acids, and alkalies in absence of dissolved oxygen, low toxicity. Production Methods: Crucible direct method and suspension zone melting method are used in industrial production. Applications: Most of today’s semiconductor production is based on silicon and germanium that widely applied in semiconductor, aerospace control, nuclear physics, optical fiber communication, infrared optics, solar cells, chemical catalyst, biomedical and other fields. 2. GENERAL PROPERTIES Product Name: Germanium Powder Appearance: dark grey powder Standard: GB/T 11071-2006 Molecular Formula: Ge Molecular Weight: 72.64 Melting Point: 937.4°C Boiling Point: 2830 °C Density: 5.35 g/mL at 25 °C(lit.) Thermal Conductivity: 0.602 W/cm/K @ 302.93 K Electrical Resistivity(20±0.5℃): ≥50(Ω.cm) Carrier Concentration/cm^-3: ≤1.5x10^12 Carrier Mobility(cm²/V.s): 3.7x10^4 3. QUALITY INSPECTION All of our products are under strict inspection before delivery. Impurity Analysis Report, Quality Inspection Report, MSDS could be provided before shipment. 4. SHIPPING & PCKAGE Shipping: By Sea, Air, Couriers such as FedEx, UPS etc. Package: 1-2kg per ingot,vacuum packed and in a woonden case or reinforced carton. Leading Time: 3 days for goods,depends on your requirements. 5. CONTACT US Flora Tu Wuhan XinRong New Materials Co.,Ltd Office: +86-27-86699856 Mob.: +86-150 0278 5780 Skype: powersteady info(@)91material.com www.91material.com