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EC number: 235-227-6
CAS number: 12136-45-7
an inorganic substance, no PBT or vPvB assessment has to be performed in
accordance with Annex XIII of REACH.
According to REACH regulation 1907/2006 PBT
and vPvB criteria shall not apply to inorganic substances. Thus,
Potassium oxide is not subject to PBT/vPvB assessment.
Potassium oxide will rapidly dissolve and dissociate in water.
When water is added to Potassium oxide, Potassium hydroxide is produced.
Therefore, Potassium oxide does not fulfill the P criterion.
Bioaccumulation is not relevant for Potassium
oxide, therefore, Potassium oxide does not meet the B criterion of the
PBT criteria.Potassium oxide has not bioaccumulation potential.
The lowest reported LC50 for freshwater and
marine organisms suggests and to be above the cut-off value of 0.1 mg/L.Based
on the data with other potassium compounds, it could be concluded that
where the long-term NOECs for marine or freshwater organisms are above
the cut-off value of 0.1 mg/L.
Potassium oxide not classified as carcinogenic (Category 1 or 2),
mutagenic (Category 1 or 2), or toxic for reproduction (Category 1, 2 or
3). There is no evidence of chronic toxicity, as identified by the
classifications: T, R48, or Xn, R48 according to Directive 67/548/EEC.
Therefore Potassium oxidedoes not meet the PBT criteria for
Summary and overall Conclusions on PBT or
Potassium oxide does not fulfill the criteria
for persistence, bioaccumulation and toxicity. Therefore, Potassium
oxide is not considered a PBT or a vPvB substance.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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