Sahay warshadeed budada Selenium / Pellets / Beads / Se Granules oo leh qiimaha ugu fiican

Sahayda warshadda budada Selenium / Pellets / Beads / Se Granules oo leh qiimaha ugu fiican Sawirka

Sharaxaad Gaaban:

Magaca badeecada: Selenium Se

Formula: Se

Daahirsanaanta: 99.9% - 99.9999%

Kaska No: 7782-49-2

Muuqaalka: budada ama granules

Cabbirka walxaha: 200 mesh, 2-5mm, iwm

Sumadda: Epoch-Chem

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Faahfaahinta Alaabta

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Sharaxaada Alaabta

Budada cas ee Amorphous, oo noqonaysa madow on taagan iyo crystalline on kululaynta;foomamka vitreous iyo kolloidal waa la diyaarin karaa.

Foomka amorphous wuxuu ku jilciyaa 40 ° C wuxuuna dhalaalay 217 ° C.Marar dhif ah ayay ku dhacdaa xaaladdeeda aasaasiga ah ee dabiiciga ah, ama sida isku-xidhka macdanta saafiga ah.

Tilmaamid

Astaanta:	Se
CAS	7782-49-2
Lambarka atomiga:	34
Miisaanka atomiga:	78.96
Cufnaanta:	4.79 gm/cc
Meesha dhalaalaysa:	217 oC
Barta Karkari:	684.9 oC
Habdhaqanka Kulaylka:	0.00519 W/cm/K @ 298.2 K
Iska caabin Koronto:	106 microhm-cm @ 0 oC
Electronegativity:	2.4 Paulings
Kuleylka Gaarka ah:	0.767 Cal/g/K @ 25 oC
Kulaylka Uumiga:	3.34 K-cal/gm atamka at 684.9 oC
Kulaylka Fusion:	1.22 Cal/gm mole
Summada	Epoch-Chem