Selenium
Zambiri Zamalonda
Zomwe zaperekedwa
Ufa wakuda
Zomwe zili ≥ 99%
(Kuchuluka kwa kagwiritsidwe ntchito 'kagwiritsidwe ntchito kazinthu')
Selenium ili ndi ma allomorphs anayi: imvi hexagonal metallic selenium, buluu pang'ono, yokhala ndi kachulukidwe ka 4.81g/cm³ (20 ℃ ndi 405.2kPa), malo osungunuka a 220.5 ℃, malo otentha a 685 ℃, osasungunuka m'madzi, carbon disulfide ndi e. , sungunuka mu sulfuric acid ndi chloroform;Red monoclinic crystal selenium, kachulukidwe wachibale ndi 4.39g/cm³, malo osungunuka 221 ℃, malo otentha 685 ℃, osasungunuka m'madzi, Mowa, sungunuka pang'ono mu etha, sungunuka mu sulfuric acid ndi nitric acid;Kachulukidwe kake ka red amorphous selenium ndi 4.26g/cm³, ndipo kachulukidwe ka selenium wakuda wagalasi ndi 4.28g/cm³.Imasinthidwa kukhala hexagonal selenium pa 180 ℃, ndipo malo otentha ndi 685 ℃.Sisungunuka m'madzi ndipo imasungunuka pang'ono mu carbon disulfide.
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Product Parameter
7782-49-2
231-957-4
78.96
Zinthu zopanda zitsulo
4.81g/cm³
Zosasungunuka m'madzi
685℃
220.5°C
Kugwiritsa Ntchito Mankhwala
Kugwiritsa ntchito mafakitale
Selenium ili ndi mawonekedwe a photoelectric komanso photosensitive.Mawonekedwe a Photoelectric amatha kusintha kuwala kukhala magetsi, ndipo mawonekedwe a photosensitive amatha kuchepetsa kukana powonjezera kuwala.Ma photoelectric ndi photosensitive properties a selenium angagwiritsidwe ntchito popanga ma photocell ndi ma mita owonetsera makamera ndi ma cell a dzuwa.Selenium imatha kusintha ma alternating current kukhala yachindunji, motero imagwiritsidwa ntchito kwambiri popanga zokonzanso.Selenium elemental ndi semiconductor yamtundu wa P yomwe ingagwiritsidwe ntchito m'mabwalo ndi zigawo zolimba.Pojambula zithunzi, selenium imatha kugwiritsidwa ntchito kukopera zikalata ndi zilembo (makatiriji a tona).M'makampani agalasi, selenium imatha kugwiritsidwa ntchito kupanga magalasi osasinthika, magalasi amtundu wa ruby ndi enamel.
Medical kalasi
Limbikitsani chitetezo chokwanira
Bzalani yogwira selenium imatha kuyeretsa ma radicals aulere m'thupi, kuchotsa poizoni m'thupi, antioxidant, imatha kuletsa kupanga lipid peroxide, kuteteza magazi, kuchotsa cholesterol, ndikuwonjezera chitetezo chamthupi.
Pewani matenda a shuga
Selenium ndi gawo logwira ntchito la glutathione peroxidase, lomwe lingalepheretse kuwonongeka kwa okosijeni kwa ma islet beta cell, kuwapangitsa kuti azigwira bwino ntchito, kulimbikitsa kagayidwe ka shuga, kuchepetsa shuga wamagazi ndi shuga wa mkodzo, ndikuwongolera zizindikiro za odwala matenda ashuga.
Pewani ng'ala
Retina imatha kuwonongeka chifukwa chokhudzidwa kwambiri ndi ma radiation apakompyuta, selenium imatha kuteteza retina, kuwonjezera kutha kwa thupi la vitreous, kuwona bwino, komanso kupewa ng'ala.
