Selenium powder Se powder CAS 7782-49-2

Item No.: Tr-Se
Selenium powder, chemical formula Se, black gray non-metallic, soluble in concentrated sulfuric acid, chloroform, slightly soluble in carbon disulfide, toxic, insoluble in water and ethanol.
Particle Size: 100 mesh, 200 mesh, 325 mesh
Selenium Powder Properties
Features of selenium Se powder CAS 7782-49-2: 
Amorphous red powder, becoming black on standing and crystalline on heating; vitreous and colloidal forms may be prepared. Amorphous form softens at 40 °C and melts at 217 °C. It rarely occurs in its elemental state in nature, or as pure ore compounds. Soluble in concentrated nitric acid and in (liquid form) common alkalies. Forms binary alloys with silver, copper, zinc, lead, etc. Low toxicity. A necessary nutritional factor for animals.

Hazards of selenium Se powder:
Selenium salts are toxic in large amounts, but trace amounts are necessary for cellular function

Storage Condition of selenium Se powder:
Damp reunion will affect Se powder dispersion performance and using effects, therefore, selenium Se powder should be sealed in vacuum packing and stored in cool and dry room, the selenium Se powder can not be exposure to air. In addition, the Se powder should be avoided under stress.

Applications of selenium Se powder:
Selenium could be used in different fields, according to its purity. Selenium is now used in a variety of applications, from glass and metallurgical applications to pigments, agriculture and electronics.

Selenium Powder Properties

Other Names Selenium particles, Selenium microparticles, Selenium micropowder,
Selenium micro powder, Selenium micron powder,
Selenium submicron powder, Selenium sub-micron powder
CAS No. 7782-49-2
Compound Formula Se
Molecular Weight 78.96
Appearance Gray to Black Powder
Melting Point 217
Boiling Point 684.9
Density 4.79 g/cm3
Solubility in H2O N/A
Electrical Resistivity 106 microhm-cm @ 0 °C
Poisson's Ratio 0.33
Tensile Strength N/A
Thermal Conductivity 0.00519 W/cm/K @ 298.2 K
Thermal Expansion (25 °C) 37 µm·m-1·K-1
Vickers Hardness N/A
Young's Modulus 10 Gpa

Selenium Powder Health & Safety Information

Signal Word Danger
Hazard Statements H301+H331-H373-
Hazard Codes T
Risk Codes 23/25-33-53
Safety Statements 20/21-28-45-61
Transport Information UN3288
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