Factory Supply Selenium Powder / Pellets / Ubuhlalu / Seaads / Se Granules Ngenani Elihle kakhulu

Factory Supply Selenium Powder / Pellets / Ubuhlalu / Seads / Se Granules Nge Prece Expresed Image

Incazelo emfushane:

Igama lomkhiqizo: Selenium se

Ifomula: se

Ukumsulwa: 99.9% - 99.9999%

I-CO CHA: 7782-49-2

Ukubukeka: i-powder noma amagremu

Ubukhulu bezinhlayiyana: Mesh 200, 2-5mm, njll

Brand: epoch-chem

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

Amathegi Omkhiqizo

Ukuchazwa Komkhiqizo

I-Amorphous Red Powder, iba mnyama ngokuma ne-crystalline ekushiseni; Amafomu e-vitreous nama-colloidal angalungiswa.

Ifomu le-Amorphous lithambisa ku-40 ° C bese lincibilika ku-217 ° C. Akuvamile ukuba kwenzeke esimweni sayo sangempela emvelweni, noma njengezinhlanganisela ze-ore ezihlanzekile.

Ukucacisa

Symbol:	Se
Umkhoga	7782-49-2
Inombolo ye-Atomic:	34
Isisindo se-athomu:	78.96
Ubuningi:	4.79 GM / CC
Iphuzu lokuncibilika:	217 OC
Iphuzu elibilayo:	684.9 OC
Ukuvuselelwa okushisayo:	0.00519 W / CM / K @ 298.2 k
Ukumelana Kagesi:	106 Microhm-Cm @ 0 OC
I-Electronegativity:	2.4 Paulisings
Ukushisa okuqondile:	0.767 CAL / G / K @ 25 OC
Ukushisa kwe-Vaporization:	3.34 k-cal / gm athomu ku-684.9 OC
Ukushisa kwe-fusion:	I-1.22 CAL / GM Mole
Phawula	UPoch-Chem