Selenium Powder

We are offering 99.999% selenium(se) powder , selenium granule.
selenium (se)\rpurity:99.99% - 99.9999%\rtechnic: electrolysis –rectify.\ranalysis :icp-ms or gdms （please find the coa attached! ）\rsize : ; lump ;shot ,powder\rservice :supply msds provide solution for materials application.\r\r1, physical character:\ratomic weight: 78.96\relectronegative: 2.55\rdensity: ρ=4.81 g·cm−3\rmelting point: 221 ℃\rboiling point: 685 ℃\r2, specification:\rhigh purity selenium:\rse-05 grade 99.999. The content of selenium is above 99.999%. The total content of ag, al, bi, cd, cu, fe, in, mg, ni, pb, sb, te is bellow 10 ppm;\ruitra purity selenium:\rse-06 grade 99.9999. The content of selenium is above 99.9999%. The total content of ag, al, bi, cd, cu, fe, in, mg, ni, pb, sb, te is bellow 1 ppm.\r3, physical size:\rvirgulate, powder.\r4, usage:\rit is mainly used in the preparation of the material of the selenium drum, photoelectric material, electrostatic photogragh and other materials of optical instrument.\r5, packing:\rit is packed with dacron film, then covered with a sealed plastic film bag.