Phepelo ea fektheri ea Selenium phofo / Pellets / Bead / Se Granules ka theko e ntle ka ho fetisisa

Phepelo ea feme ea Selenium phofo / Pellets / Beads / Se Granules ka theko e ntle ka ho fetisisa Featured Image

Tlhaloso e Khutšoanyane:

Lebitso la sehlahisoa: Selenium Se

Foromo: Se

Bohloeki: 99.9% - 99.9999%

Cas No: 7782-49-2

Ponahalo: phofo kapa granules

Boholo ba likarolo: 200 mesh, 2-5mm, joalo-joalo

Lebitso: Epoch-Chem

Re romelle lengolo-tsoibila

Lintlha tsa Sehlahisoa

Li-tag tsa Sehlahisoa

Tlhaloso ea Sehlahisoa

Phofo e khubelu ea amorphous, e fetoha e ntšo ha e eme le kristale ha e futhumatsa; mefuta ea vitreous le colloidal e ka lokisoa.

Sebopeho sa amorphous se kokobela ho 40 °C mme se qhibiliha ho 217 °C. Ha se hangata e hlahang maemong a eona a mantlha ka tlhaho, kapa joalo ka metsoako e hloekileng ea ore.

Tlhaloso

Letšoao:	Se
CAS	7782-49-2
Nomoro ea Atomic:	34
Boima ba Atomic:	78.96
Tekano:	4.79 gm/cc
Melting Point:	217 oC
Sebaka sa ho Bela:	684.9 oC
Thermal Conductivity:	0.00519 W/cm/K @ 298.2 K
Ho hanyetsa Motlakase:	106 microhm-cm @ 0 oC
Electronegativity:	2.4 Lipapali
Mocheso o khethehileng:	0.767 Cal/g/K @ 25 oC
Mocheso oa vaporization:	3.34 K-cal/gm athomo ho 684.9 oC
Mocheso oa Fusion:	1.22 Cal/gm mole
Brand	Epoch-Chem