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
Potassium and carbonate ions are essential for almost all living organisms including terrestrial invertebrates and natural components in their habitats.The abiotic dissociation of potassium carbonate in water and soil pore water results in the formation of potassium and carbonate ions. Potassium as well as carbonate are ubiquitously present in the environment, occurring naturally in minerals, soils and sediments, natural waters (oceans, lakes, rivers), biota and human beings and also in sewage. Relevant sources for their occurrence in soil are decay of biotic material, animal and human excreta and abrasion of pedospheric and lithogenic material. Therefore, potassium carbonate is not expected to have an intrinsic toxic activity to terrestrial organisms.
These results are underlined by the test of the read across substance potassium chloride, that indicates very low toxicity of potassium to earthworms (Eisenia andrei). In a 14 d acute toxicity study with earthworms (Eisenia andrei) the LC 50 of KCl in artificial OECD soil was determined to be 5595 mg/kg soil dw (CV (95%): 5338.4 - 5863.9 mg/kg soil dw). The NOEC was 4238 mg/kg soil dw, the LOEC was 5869 mg/kg soil dw.
Toxicity data for birds are not available, however any need for testing of birds should be carefully considered taking into account the mammalian dataset that is available for potassium carbonate and hydrogencarbonate.
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