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EC number: 235-227-6 | CAS number: 12136-45-7
Hydrolysis
Administrative data
Link to relevant study record(s)
- Endpoint:
- hydrolysis
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is readily biodegradable
- other:
Reference
Description of key information
According to “ANNEX VIII- STANDARD INFORMATION REQUIREMENTS FOR SUBSTANCES MANUFACTURED OR IMPORTED IN QUANTITIES OF 10 TONNES OR MORE , study for Hydrolysis as a function of pH does not need to be conducted if:
-the substance is ready biodegradable.
As Dipotassium oxide/Potassium oxide is ready biodegradable a Hydrolysis study does not need to be conducted.
Hydrolysis is not expected to be an important environmental fate process since this compound lacks functional groups that hydrolyze under environmental conditions.
Hydrolysis is a chemical reaction during which molecules of water (H2O) are split into hydrogen cations (H+, conventionally referred to as protons) and hydroxide anions (OH−) in the process of a chemical mechanism).
Potassium oxide is a basic oxide and reacts with water violently to produce the caustic potassium hydroxide
When water is added to Potassium oxide, KOH is produced.
K2O+H2O→KOH
On this basis, Potassium oxide does not have a potential for Hydrolysis and Potassium ion will not hydrolise.
Key value for chemical safety assessment
Additional information
According to “ANNEX VIII- STANDARD INFORMATION REQUIREMENTS FOR SUBSTANCES MANUFACTURED OR IMPORTED IN QUANTITIES OF 10 TONNES OR MORE , study for Hydrolysis as a function of pH does not need to be conducted if:
-the substance is ready biodegradable.
As Dipotassium oxide/Potassium oxide is ready biodegradable a Hydrolysis study does not need to be conducted.
Hydrolysis is not expected to be an important environmental fate process since this compound lacks functional groups that hydrolyze under environmental conditions.
Hydrolysis is a chemical reaction during which molecules of water (H2O) are split into hydrogen cations (H+, conventionally referred to as protons) and hydroxide anions (OH−) in the process of a chemical mechanism).
Potassium oxide is a basic oxide and reacts with water violently to produce the caustic potassium hydroxide
When water is added to Potassium oxide, KOH is produced.
K2O+H2O→KOH
On this basis, Potassium oxide does not have a potential for Hydrolysis and Potassium ion will not hydrolise.
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