Se Granule High Purity Selenium Shot 99.99% 4n For Electronics Bag Packed

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Se Granule High Purity Selenium Shot 99.99% 4n Low Toxicity High purity Selenium Metal Selenium and its series products from Wuhan Xinrong - - - - Material name | Purity | size | High purity Selenium | 5N-6N | | Selenium Powder | 4N | 40-200 mesh | Selenium Granule | 4N | | Selenium Dioxide | 4N | | - - - - 1. MATERIAL OVERVIEW - - - - Characteristics: | Amorphous red powder, becoming black on standing and crystalline on heating; vitreous and colloidal forms may be prepared. Amorphous form softens at 40 C and melts at 217 C. It rarely occurs in its elemental state in nature, or as pure ore compounds. Soluble in concentrated nitric acid and in (liquid form) common alkalies. Forms binary alloys with silver, copper, zinc, lead, etc. Low toxicity. A necessary nutritional factor for animals. | Hazards: | Selenium salts are toxic in large amounts, but trace amounts are necessary for cellular function | Applications: | Selenium could be used in different fields, according to its purity. Selenium is now used in a variety of applications, from glass and metallurgical applications to pigments, agriculture and electronics. | - - - - 2. GENERAL PROPERTIES - - - - Symbol: | Se | CAS | 7782-49-2 | Atomic Number: | 34 | Atomic Weight: | 78.96 | Density: | 4.79 gm/cc | Melting Point: | 217 oC | Boiling Point: | 684.9 oC | Thermal Conductivity: | 0.00519 W/cm/K @ 298.2 K | Electrical Resistivity: | 106 microhm-cm @ 0 oC | Electronegativity: | 2.4 Paulings | Specific Heat: | 0.767 Cal/g/K @ 25 oC | Heat of Vaporization: | 3.34 K-cal/gm atom at 684.9 oC | Heat of Fusion: | 1.22 Cal/gm mole | - - - - 3. Specification - - - - Se % | 99.99 min | Cu | 0.0001max | Hg | 0.0002 | As | 0.0001 | Sb | 0.0003max | Te | 0.0001max | Pb | 0.0003max | Fe | 0.0009 | Sn | 0.0001max | Ni | 0.0001 | Bi | 0.0001max | Al | 0.0001max | Si | 0.0002 | S | 0.0003 | - - - - 4. Packing Generally packed in 1 kg/bag or bottle, also could do according to customer request. - - - - First step: | Packed in vacuum polyester bag/ plastic bag. | Second step: | Packed in vacuum polyester bag or aluminum foil bag again. | Third step: | Wrapped with bubble, load to the carton and seal the carton | - - - - 5. Shipping - - - - Preparation time before shipping | If we have stock, we could delivery the material in 3-5 days after customer confirmed the PO | If we do not have stock, we could delivery the material in 7-15 days according to customer purchased quantity. | Cargo shipping time | If the material is delivery by express, it takes 3-6 days to arrive at the destination place. | If the material is shipped by air, it takes 3-6 days to arrive in the destination air port. | If the material is shipped by sea, it takes 10-40 days to arrive in the different countries sea ports | - - - -

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wuhan xinrong new materials co.,ltd

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