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Solubility in organic solvents / fat solubility

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Endpoint:
solubility in organic solvents / fat solubility
Data waiving:
other justification
Justification for data waiving:
other:
Endpoint:
solubility in organic solvents / fat solubility
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
no guideline required
Principles of method if other than guideline:
Handbook source
GLP compliance:
not specified
Medium:
ethanol
Solubility:
38.7 other: g/100 g of solvent
Temp.:
28 °C
Medium:
other: ether
Temp.:
28 °C
Remarks on result:
other: soluble
Details on results:
38.7 gram of Potassium oxide dissolves in 100 g of ethanol to form pottasium ethoxide
Potassium oxide is soluble in ether

Potassium ethoxide, also known as potassium ethanolate, is an off-white or yellow powder with the chemical formula of C2H5KO. Potassium ethoxide contains an ethoxide ion, the conjugate base of ethanol, which makes this compounds strongly basic. It hydrolyzes in water to yield ethanol and potassium hydroxide.

Conclusions:
38.7 gram of Potassium oxide dissolves in 100 g of ethanol to form pottasium ethoxide.
Potassium oxide is soluble in ether

Description of key information

Solubility In Organic Solvent
According to “ANNEX IX- STANDARD INFORMATION REQUIREMENTS FOR SUBSTANCES MANUFACTURED OR IMPORTED IN QUANTITIES OF 100 TONNES OR MORE, study for Stability in organic solvents and identity of relevant degradation products is only required if stability of the substance is considered to be critical.
Solvents are substances that are capable of dissolving or dispersing one or more other substances. Organic solvents are carbon-based solvents (i.e., they contain carbon in their molecular structure).
The substance is Inorganic : Its functional groups indicate no solubility in common organic solvents.Stability in organic solvents is not considered critical.
It should be noted that this substance Potassium oxide is soluble in organic solvents such as ethanol and ether. The solubility of Potassium oxide in ethanol is approximately 38 g/100 g.
The study does not to be conducted if the substance is inoranic. (Ref. 1)
Its functional groups indicate no solubility in common organic solvents. Solubility in organic solvents is not considered critical. (Ref. 1)
Reactivity
Hygroscopic and reacts with water to form Potassium hydroxide.
Therefore testing for solubility in organic solvents does not need to be performed.

Ref. 1) European Chemicals Agency (ECHA), Guidance for the implementation of REACH, Guidance on information requirements and chemical safety assessment, Chapter R.7a: Endpoint specific guidance, May 2008, pages 168-171.

Key value for chemical safety assessment

Additional information

Solubility In Organic Solvent

According to “ANNEX IX- STANDARD INFORMATION REQUIREMENTS FOR SUBSTANCES MANUFACTURED OR IMPORTED IN QUANTITIES OF 100 TONNES OR MORE, study for Stability in organic solvents and identity of relevant degradation products is only required if stability of the substance is considered to be critical.

Solvents are substances that are capable of dissolving or dispersing one or more other substances. Organic solvents are carbon-based solvents (i.e., they contain carbon in their molecular structure).

The substance is Inorganic : Its functional groups indicate no solubility in common organic solvents.Stability in organic solvents is not considered critical.

It should be noted that this substance Potassium oxide is soluble in organic solvents such as ethanol and ether. The solubility of Potassium oxide in ethanol is approximately 38 g/100 g.

The study does not to be conducted if the substance is inoranic. (Ref. 1)

Its functional groups indicate no solubility in common organic solvents. Solubility in organic solvents is not considered critical. (Ref. 1)

Reactivity

Hygroscopic and reacts with water to form Potassium hydroxide.

Therefore testing for solubility in organic solvents does not need to be performed.

Ref. 1) European Chemicals Agency (ECHA), Guidance for the implementation of REACH, Guidance on information requirements and chemical safety assessment, Chapter R.7a: Endpoint specific guidance, May 2008, pages 168-171.