Factory Cheap Fe3o4 Nanoparticles - Selenium Se powder – Xinglu

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Factory Cheap Fe3o4 Nanoparticles - Selenium Se powder – Xinglu Detail:

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selenium metal powder

1. Features

Symbol:	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
Specific Heat:	0.767 Cal/g/K @ 25 oC
Heat of Vaporization:	3.34 K-cal/gm atom at 684.9 oC
Heat of Fusion:	1.22 Cal/gm mole

3. Hazards

Selenium salts are toxic in large amounts, but trace amounts are necessary for cellular function

4. Applications

Selenium is now used in a variety of applications, from glass and metallurgical applications to pigments, agriculture and electronics.

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