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8.04815 EMD Millipore

Potassium

(cubes) under protective liquid for synthesis

  • CAS Number 7440-09-7

  • Linear Formula K

  • Molecular Weight 39.10 g/mol

  •  EC Number 231-119-8

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Properties

Related Categories Materials Science, Metal and Ceramic Science, Metals More...
bp   760 °C (1013 hPa)
vapor pressure   133 hPa (171 °C)
density   0.856 g/cm3 (20 °C)
mp   64 °C
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (of K): ≥ 98.0 %

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Safety Information

HS Code 
2805 19 90
Hazard Statement(s) 
H260: In contact with water releases flammable gases which may ignite spontaneously.
H314: Causes severe skin burns and eye damage.
EUH014: Reacts violently with water.
Precautionary Statement(s) 
P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
P402 + P404: Store in a dry place. Store in a closed container.
Storage class 
4.3 Hazardous materials, which set free flammable gases upon 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.
Hazard Pictogram(s) 
GHS02  GHS02
Hazard Pictogram(s) 
GHS05  GHS05
Hazard Symbols 
Corrosive  Corrosive
Hazard Symbols 
Flammable  Flammable
Declaration (railroad and road) ADR, RID 
UN 2257 , 4.3, I
Declaration (transport by air) IATA-DGR 
UN 2257 , 4.3, I
Declaration (transport by sea) IMDG-Code 
UN 2257 , 4.3, I
Categories of danger 
highly flammable, corrosive
R Phrase 
R 14/15-34
Reacts violently with water, liberating extremely flammable gases.Causes burns.
S Phrase 
S 5- 8-45
Keep contents under paraffin oil.Keep container dry.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).

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