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LC4989 Selenium
black 99+

 

Order number Packaging Quantity Price €
AC31989 Plastic bottle 50 g 49.95
AC31989 Plastic bottle 250 g 247.50
AC31989 Plastic bottle 1 kg 944.1

 

Product information
Hill Formula Se
HS Code 2804 90 00
EC number 231-957-4
Molar mass 78.96 g/mol
EC index number 034-001-00-2
CAS number 7782-49-2

 

Chemical and physical data
Solubility (20 °C) slightly soluble
Melting point 217 °C
Molar mass 78.96 g/mol
Density 4.28 g/cm3 (20 °C)
Bulk density 1270 kg/m3
Boiling point 685 °C (1013 hPa)
Vapor pressure 0.001 hPa (20 °C)

 

 

Safety information
R Phrase R 23/25-33-53
Toxic by inhalation and if swallowed.Danger of cumulative effects.May cause long-term adverse effects in the aquatic environment.
S Phrase S 20/21-28-45-61
When using do not eat, drink or smoke.After contact with skin, wash immediately with plenty of water.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).Avoid release to the environment. Refer to special instructions/ Safety data sheets.
Categories of danger toxic, dangerous for the environment
Hazard Symbol Toxic
Storage class Combustible substances, toxic
WGK WGK 2 water endangering
Disposal 17
Inorganic selenium compounds are toxic and must be handled with caution. Container E. Elemental selenium can be recovered by first oxidizing the salts in aqueous solution with concentrated Nitric acid (Cat.No. 100443). The addition of Sodium hydrogen sulfite solution (Item No. 806356) then causes elemental selenium to precipitate out. Aqueous phase: Container D.

 

Toxicological data
LD 50 oral LD50 rat 6700 mg/kg

 

Specifications
Identity passes test
Assay (gravimetrically) ≥ 99.0 %
Cu (Copper) ≤ 0.005 %
Fe (Iron) ≤ 0.05 %
Pb (Lead) ≤ 0.05 %
Residue on ignition ≤ 0.5 %
Particle size (> 150 µm) ≤ 5 %