Registration Dossier
Registration Dossier
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EC number: 209-529-3 | CAS number: 584-08-7
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The abiotic dissociation products of potassium carbonate are common constituents of the influent of sewage treatment plants and not expected to have an intrinsic toxic activity to sludge organisms.
Key value for chemical safety assessment
Additional information
In accordance with REACH Annex VIII, 9.1.4, column 2, the study does not need to be conducted, if there are mitigating factors indicating that microbial toxicity is unlikely to occur: The abiotic dissociation of potassium carbonate in 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 the influent of sewage treatment plant are decay of biotic material, animal and human excreta and abrasion of pedospheric and lithogenic material. Therefore, the abiotic dissociation products of potassium carbonate are common constituents of the influent of sewage treatment plants and not expected to have an intrinsic toxic activity to sludge organisms.
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