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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 | ![]() |
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 % |