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| LC4798 Potassium (cubes) under protective liquid for synthesis |
| Order number | Packaging | Quantity | Price € |
| AC31798 | Glass bottle | 25 g | 36.9 |
| AC31798 | Glass bottle | 100 g | 98.1 |
| AC31798 | Glass bottle | 250 g | 174.6 |
| Product information | |
| Hill Formula | K |
| Chemical formula | K |
| HS Code | 2805 19 90 |
| EC number | 231-119-8 |
| Molar mass | 39.10 g/mol |
| EC index number | 019-001-00-2 |
| CAS number | 7440-09-7 |
| Chemical and physical data | |
| Solubility | (20 °C) (rigorous decomposition) |
| Melting point | 64 °C |
| Molar mass | 39.10 g/mol |
| Density | 0.856 g/cm3 (20 °C) |
| Boiling point | 760 °C |
| Vapor pressure | 133 hPa (171 °C) |
| Safety information | |
| R Phrase | R 14/15-34 Reacts violently with water, liberating extremely flammable gases.Causes burns. |
| S Phrase | S 5- 8-43-45 Keep contents under paraffin oil.Keep container dry.In case of fire, use sand. Never use water.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). |
| Categories of danger | highly flammable, corrosive |
| Hazard Symbol |
|
| Storage class | Materials that form flammble gases in contact with water |
| WGK | WGK 2 water endangering |
| Disposal | 26 Alkali and alkaline-earth metals should be taken up in an inert solvent and neutralized by adding 2-propanol (Cat. No. 100995) dropwise with stirring. Should the reaction be more violent than expected, conversion should be carried out with tert-butanol or octanol. Caution: This reaction produces hydrogen, which can form explosive mixtures; take necessary precautions. When the reaction has ceased, add water dropwise; neutralize; container D. In the case of alkali or alkaline-earth borohydrides, add methanol (Cat. No. 106008) with stirring; in the case of alkali or alkaline-earth amides and hydrides, organoaluminium and organotin hydrides, add 2-propanol (Cat. No. 100995) dropwise. The substances, which are usually in solid form, should be previously suspended in an ether! When the respective reaction has ceased, hydrolize with water; then neutralize. Container D or E. Lithium aluminium hydride must also be destroyed by slurrying in an ether. Under an inert gas and with thorough stirring, add dropwise a 1:4 mixture of ethyl acetate (Cat. No. 822277) and the ether used to prepare the slurry. Always ensure thorough mixing (stirring)! Container A. |
Flammable
Corrosive
| Transport information | |
| Declaration (transport by sea) IMDG-Code | UN 2257 POTASSIUM, 4.3, I |
| Declaration (transport by air) IATA-DGR | UN 2257 POTASSIUM, 4.3, I |
| Specifications | |
| Assay (of K) | ≥ 98 % |