Selenium
Lintlha tsa Sehlahisoa
Litlhaloso tse fanoeng
Phofo e ntšo
Litaba ≥ 99%
(Bophahamo ba referense ea kopo 'ts'ebeliso ea sehlahisoa')
Selenium e na le li-allomorphs tse 'nè: selenium e bohlooho ba hexagonal metallic, e putsoa hanyane, e nang le boima bo lekanang ba 4.81g/cm³ (20℃ le 405.2kPa), ntlha e qhibilihisang ea 220.5℃, ntlha e belang ea 685℃, e sa qhibiliheng metsing, carbon disulfide le ethanose , e qhibilihang ka sulfuric acid le chloroform;Red monoclinic crystal selenium, boima bo lekanang ke 4.39g/cm³, ntlha e qhibilihang ke 221℃, ntlha e belang 685 ℃, ha e qhibilihe ka metsing, ethanol, e qhibilihang hanyenyane ka ether, e qhibiliha ka sulfuric acid le nitric acid;Tekanyo e lekanyelitsoeng ea selenium e khubelu ea amorphous ke 4.26g/cm³, 'me boima bo lekanang ba selenium e ntšo ea khalase ke 4.28g/cm³.E fetoleloa ho selenium e hexagonal ka 180 ℃, mme ntlha e belang ke 685 ℃.Ha e qhibilihe ka metsing 'me e qhibiliha hanyane ka har'a carbon disulfide.
EVERBRIGHT® 'e tla boela e fane ka lintlha tse ikhethileng: content/whiteness/particlesize/PHvalue/color/packagingstyle/ lintlha tsa sephutheloana le lihlahisoa tse ling tse loketseng maemo a hau a ts'ebeliso,' me e fane ka lisampole tsa mahala.
Parameter ea sehlahisoa
7782-49-2
231-957-4
78.96
Lintho tse seng tsa tšepe
4.81 g/cm³
Ha e kenelle ka metsing
685℃
220.5°C
Tšebeliso ea Sehlahisoa
Tšebeliso ea indasteri
Selenium e na le thepa ea photoelectric le photosensitive.Ts'ebetso ea Photoelectric e ka fetola leseli ka kotloloho ho motlakase, 'me ts'ebetso ea lifoto e ka fokotsa khanyetso ha khanya e ntse e eketseha.Thepa ea selenium ea photoelectric le photosensitive e ka sebelisoa ho hlahisa li-photocells le li-exposure metres bakeng sa lik'hamera le lisele tsa letsatsi.Selenium e ka fetola motlakase o mong hore e be oa hona joale o tobileng, kahoo e sebelisoa haholo ha ho etsoa li-rectifiers.Selenium elemental ke semiconductor ea mofuta oa P e ka sebelisoang lipotolohong le likarolo tse tiileng tsa mmuso.Ha ho etsoa photocopy, selenium e ka sebelisoa ho kopitsa litokomane le litlhaku (toner cartridges).Ka indasteri ea likhalase, selenium e ka sebelisoa ho hlahisa likhalase tse senyehileng, khalase ea 'mala oa ruby le enamel.
Medical grade
Matlafatsa tšireletso ea 'mele
Semela se sebetsang sa selenium se ka hlakola li-radicals tsa mahala 'meleng, ho felisa chefo' meleng, antioxidant, e ka thibela ka katleho tlhahiso ea lipid peroxide, ea thibela mali, ea tlosa k'holeseterole le ho ntlafatsa ts'ebetso ea 'mele ea ho itšireletsa mafung.
Thibela lefu la tsoekere
Selenium ke karolo e sebetsang ea glutathione peroxidase, e ka thibelang ho senyeha ha oxidative ea lisele tsa beta tsa islet, ho li etsa hore li sebetse ka mokhoa o tloaelehileng, ho khothalletsa metabolism ea tsoekere, ho fokotsa tsoekere ea mali le tsoekere ea moroto, le ho ntlafatsa matšoao a bakuli ba lefu la tsoekere.
Thibela cataract
Retina e kotsing ea ho senyeha ka lebaka la ho pepesehela mahlaseli a kotsi a k'homphieutha haholoanyane, selenium e ka sireletsa retina, ea matlafatsa 'mele oa vitreous, ea ntlafatsa pono le ho thibela lera la mahlo.
