Cas 7782-49-2 ukucoceka okuphezulu 99.9% -99.999% Selenium Se powder okanye ixabiso legranules

I-Cas 7782-49-2 ukucoceka okuphezulu 99.9% -99.999% Selenium Se powder okanye ixabiso leegranules Umfanekiso ofakiweyo
  • Cas 7782-49-2 ukucoceka okuphezulu 99.9% -99.999% Selenium Se powder okanye ixabiso legranules
  • Cas 7782-49-2 ukucoceka okuphezulu 99.9% -99.999% Selenium Se powder okanye ixabiso legranules
  • Cas 7782-49-2 ukucoceka okuphezulu 99.9% -99.999% Selenium Se powder okanye ixabiso legranules

Inkcazelo emfutshane:

Igama lemveliso: Selenium Se powder

Ifomula: Se

Ubunyulu: 99.9% - 99.999%

Inombolo yeCas: 7782-49-2

Ukubonakala: umgubo omnyama

Ubungakanani be-particle: 200 mesh


Iinkcukacha zeMveliso

Iithegi zeMveliso

Ingcaciso yeMveliso

I-amorphous powder ebomvu, ibe mnyama ngokuma kunye nekristale ekufudumeni; iifom ze-vitreous kunye ne-colloidal zinokulungiswa.

Imo ye-amorphous iyathamba kwi-40 °C kwaye inyibilika kwi-217 °C. Ayifane yenzeke kwimo yayo yokuqala kwindalo, okanye njengeekhompawundi ezicocekileyo zentsimbi.

Inkcazo

Uphawu:
Se
CAS
7782-49-2
Inombolo yeAtom:
34
Ubunzima beAtom:
78.96
Ubuninzi:
4.79 gm/cc
Indawo yokunyibilika:
217 oC
Indawo yokuBilisa:
684.9 oC
I-Thermal Conductivity:
0.00519 W/cm/K @ 298.2 K
Ukuxhathisa koMbane:
106 microhm-cm @ 0 oC
I-Electronegativity:
2.4 IiPawuli
Ubushushu obuthile:
0.767 Cal/g/K @ 25 oC
Ubushushu boMphunga:
3.34 K-cal/gm atom kwi-684.9 oC
Ubushushu beFusion:
1.22 Cal/gm imvukuzane

 

Isicelo

1 Ukuvelisa: iselenium(I) ikloridi, iSelenium dichloride, iSelenides, i-mercury selenide.

2 Ushishino lobuchwephesha obuphezulu kwezeNzululwazi: ilead selenide, zinc selenide, copper indium gallium diselenide.

3 Umbane:isemiconductors,isinyithi sombane,Tetraselenium tetranitride.

4 IKhemistri:Selenols,selenium isotope,iPlastiki, ukuvezwa kweefoto.

5 Ukusetyenziswa kweshishini:Ukwenziwa kweglasi, igubu leselenium, ifoto ye-electrostatic, isixhobo sokubona.

Izinto Eziluncedo Zethu

I-Rare-earth-scandium-oxide-ngexabiso-elikhulu-2

Inkonzo esinokubonelela ngayo

1) Ikhontrakthi esemthethweni inokusayinwa

2) Isivumelwano sokugcinwa kwemfihlo sinokusayinwa

3) Isiqinisekiso sokubuyiselwa kweentsuku ezisixhenxe

Okubaluleke ngakumbi: asikwazi ukubonelela ngemveliso kuphela, kodwa inkonzo yesisombululo seteknoloji!

FAQ

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Immimiselo yokuhlawula

T/T(telex transfer), Western Union, MoneyGram, BTC(bitcoin), njl.

Ixesha lokukhokhela

≤25kg: kwiintsuku ezintathu zokusebenza emva kokuba intlawulo ifunyenwe. ＞25kg: iveki enye

Isampulu

Iyafumaneka, sinokubonelela ngeesampuli ezincinci zasimahla ngenjongo yokuvavanya umgangatho!

Iphakheji

1kg ingxowa nganye fpr iisampulu, 25kg okanye 50kg igubu ngalinye, okanye njengoko ubufuna.

Ugcino

Gcina isikhongozeli sivalwe ngokuqinileyo kwindawo eyomileyo, epholileyo nengena umoya.

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