Cas 7782-49-2 yakakwirira kuchena 99.9% -99.999% Selenium Se poda kana granules mutengo

Cas 7782-49-2 yakakwirira kuchena 99.9% -99.999% Selenium Se poda kana granules mutengo Featured Image
  • Cas 7782-49-2 yakakwirira kuchena 99.9% -99.999% Selenium Se poda kana granules mutengo
  • Cas 7782-49-2 yakakwirira kuchena 99.9% -99.999% Selenium Se poda kana granules mutengo
  • Cas 7782-49-2 yakakwirira kuchena 99.9% -99.999% Selenium Se poda kana granules mutengo

Tsanangudzo Pfupi

Zita rechigadzirwa: Selenium Se powder

Formula: Se

Kuchena: 99.9% - 99.999%

Cas Nha: 7782-49-2

Kuonekwa: hupfu hwakasviba

Chikamu saizi: 200 mesh


Product Detail

Product Tags

Product Description

Amorphous dzvuku poda, kuva dema pakumira uye crystalline pakudziya; vitreous uye colloidal mafomu anogona kugadzirwa.

Amorphous fomu inopfava pa40 °C uye inonyunguduka pa217 °C. Izvo hazviwanzo kuitika mune yayo yekutanga mamiriro mune zvakasikwa, kana seyakachena ore makomisheni.

Tsanangudzo

Chiratidzo:
Se
CAS
7782-49-2
Atomic Number:
34
Atomic Weight:
78.96
Density:
4.79 gm/cc
Melting Point:
217 oC
Boiling Point:
684.9 oC
Thermal Conductivity:
0.00519 W/cm/K @ 298.2 K
Electrical Resistivity:
106 microhm-cm @ 0 oC
Electronegativity:
2.4 Paulings
Chaicho Kupisa:
0.767 Cal/g/K @ 25 oC
Kupisa kweVaporization:
3.34 K-cal/gm atomu pa684.9 oC
Kupisa kweFusion:
1.22 Cal/gm mole

 

Application

1 Kugadzira: selenium (I) chlorid, Selenium dichloride, Selenides, mercury selenide.

2 Sainzi yepamusoro tekinoroji indasitiri: lead selenide, zinc selenide, mhangura indium gallium diselenide.

3 Magetsi:semiconductors,electropositive simbi,Tetraselenium tetranitride.

4 Chemistry:Selenols,selenium isotope,Plastiki, kuratidzwa kwemifananidzo.

5 Indasitiri application: Girazi kugadzira, selenium chigubhu, electrostatic mufananidzo, Optical chiridzwa.

Zvatiri Zvakanakira

Rare-earth-scandium-oxide-ine-guru-mutengo-2

Service yatinokwanisa kupa

1) Chibvumirano chepamutemo chinogona kusaina

2) Chibvumirano chekuvanzika chinogona kusaina

3) Mazuva manomwe ekudzorera vimbiso

Zvinotonyanya kukosha: isu hatigone kupa kwete chigadzirwa chete, asi tekinoroji mhinduro sevhisi!

FAQ

Uri kugadzira kana kutengesa?

Isu tiri vagadziri, fekitori yedu iri muShandong, asi isu tinogona zvakare kukupa imwe yekumira kutenga sevhisi iwe!

Mitemo yekubhadhara

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

Kutungamira nguva

≤25kg: mukati memazuva matatu ekushanda mushure mekubhadhara kwagamuchirwa. ＞25kg: vhiki imwe

Muenzaniso

Inowanikwa, tinogona kupa madiki emahara emahara emhando yekuongorora chinangwa!

Package

1kg pabhegi fpr samples, 25kg kana 50kg padhiramu, kana sezvawaida.

Storage

Chengetedza mudziyo wakavharwa zvakasimba munzvimbo yakaoma, inotonhorera uye ine mhepo yakanaka.

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