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EC number: 235-227-6 | CAS number: 12136-45-7
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data

Solubility in organic solvents / fat solubility
Administrative data
Link to relevant study record(s)
- 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 - Conclusions:
- 38.7 gram of Potassium oxide dissolves in 100 g of ethanol to form pottasium ethoxide.
Potassium oxide is soluble in ether
Referenceopen allclose all
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.
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.
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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