Registration Dossier
Registration Dossier
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EC number: 209-529-3 | CAS number: 584-08-7
Endpoint summary
Administrative data
Description of key information
Additional information
The potassium cation is ubiquitously present in the environment, occurring naturally in minerals, soils and sediments, natural waters (oceans, lakes, rivers), biota and human beings. Potassium is the seventh most abundant element on earth, constituting 2.40% by weight of the earth’s crust. The natural potassium concentration in rivers is <5 mg/L. Potassium carbonate was identified but not quantified in ashes of plants (Pinus halepensis, Pinus brutia, Olea europaea, Cupressus sempervirens, Pistacia lentiscus, and Quercus coccifera) prepared at temperatures of 600, 800, and 1000°C. Potassium carbonate was found in fly ash from some power-plants. Potassium carbonate was found in the water soluble fraction of fly ash of a power plant, which was burning black coal, but not quantified. In the fly ash of a boiler burning moist forest residues used for local heat production in Sweden, potassium carbonate was detected. The ion chromatography analysis of the submicrometer flue gas particles showed the fine mode particles to mainly consist of KCl, K2SO4, and K2CO3. An occurrence of K2CO3 in the flue gas is not reported.
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