Ntawv
Khoom Paub meej
Cov lus qhia tshwj xeeb muab
Hmoov dub
Cov ntsiab lus ≥ 99%
(Xaiv tau ntawm kev siv cov khoom siv 'cov khoom siv')
Selenium muaj plaub Allomorphs: Grey Hexagonal Metallic Selenium Selenium Selenium, nrog etholgoo thiab ethanol, soluble hauv sulfuric acid thiab chloroform; Liab monoclinic crystal selenium, txheeb ze ceev yog 4.39g / melting point 221 ℃, soluble hauv ether, soluble hauv sulfuric acid thiab nitric acid; Tus txheeb ze ceev ntawm liab amorphous selenium yog 4.26g / thiab cov txheeb ze density ntawm dub selenium yog 4.28G / cm³. Nws tau hloov mus rau hauv hexagonal selenium ntawm 180 ℃, thiab lub boiling point yog 685 ℃. Nws yog insoluble hauv dej thiab me ntsis soluble hauv carbon disulfide.
Evenbright® 'LL tseem muab cov ntsiab lus customized: Cov ntsiab lus / Partenize / Phaj Cov Khoom Siv thiab cov khoom tshwj xeeb uas haum rau koj siv cov xwm txheej, thiab muab cov qauv dawb.
Khoom Parameter
7782-49-2
231-957-4
78.96
Tsis yog-nws yog xim hlau
4.81 g / cm³
Insoluble hauv dej
685℃
220.5 ° C
Khoom Siv Khoom Siv
Kev Siv Siv
Selenium muaj ob qho tib si photoelectric thiab peatureCensitive thaj chaw. Kev ua haujlwm photeelectric tuaj yeem hloov kho lub teeb ncaj qha, thiab cov duab kev ua tau zoo tuaj yeem txo kev tiv thaiv thaum nce teeb. Cov khoom siv yees duab thaij duab thiab cov duab ntawm Selenium tuaj yeem siv rau hauv cov photocells thiab kis meters rau cov koob yees duab thiab cov hlwb hnub ci. Selenium tuaj yeem hloov dua tshiab rau hauv kev ncaj qha tam sim no, yog li nws tau siv dav hauv kev siv khoom ntawm rectifiers. Selenium Eleman yog ib hom P-Hom Semiconductor uas tuaj yeem siv rau hauv cov voj voog thiab cov khoom siv-lub xeev. Hauv photocopying, selenium tuaj yeem siv los luam cov ntaub ntawv thiab cov ntawv sau (toner cartridges). Hauv kev lag luam iav, selenium tuaj yeem siv los tsim cov iav decolorized, ruby xim iav thiab txham.
Meidical Qib
Txhawb Kev Tiv Thaiv
Nroj muaj selenium tuaj yeem tshem tawm dawb radicals nyob rau hauv lub cev, tshem tawm cov nqaij qaib ua ke, tiv thaiv cov ntshav txhaws, tshem tawm cov ntshav txhaws, thiab txhim kho tib neeg cov rog, thiab txhim kho tib neeg cov rog.
Tiv thaiv cov ntshav qab zib
Selenium yog cov nquag tivthaiv ntawm glutathione peroxidase, uas tuaj yeem tiv thaiv kev puas tsuaj oxidolism thiab cov kab piam thaj, thiab txhim kho cov tsos mob ntawm cov tsos mob ntshav qab zib.
Tiv Thaiv Kev Nyab Xeeb
Lub retina yog qhov yooj yim los ua kev puas tsuaj vim tias muaj kev tiv thaiv hluav taws xob ntau dua, txhawm rau tiv thaiv lub cev viteous, txhim kho qhov muag pom, thiab tiv thaiv kev sib tsoo.
