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Diss Factsheets
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EC number: 930-930-0 | CAS number: -
- 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
Hydrolysis
Administrative data
Link to relevant study record(s)
- Endpoint:
- hydrolysis
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
- Justification for type of information:
- JUSTIFICATION FOR DATA WAIVING
Calcium peroxide decomposes into hydrogen peroxide and calcium hydroxide. The hydrogen peroxide will subsequently further decompose into water and oxygen. Furthermore, the calcium hydroxide dissociates when brought into aqueous medium. The different chemical reactions are:
CaO2 + 2 H2O -> Ca2 + + 2 (OH)- + H2O2
H2O2 + H2O -> 2 H2O + O2
Ca(OH)2 -> Ca2 + + 2 OH-
The water solubility test performed on calcium peroxide also demonstrates the formation of hydrogen peroxide upon reaction of the substance with water, and the subsequent decomposition of the formed hydrogen peroxide. - Reason / purpose for cross-reference:
- data waiving: supporting information
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- - Principle of test:
hydrolytic loss of calcium peroxide by measurement of active oxygen loss in a water solution.
- Short description of test conditions: Deionized water solution of test item at 25ºC.
- Parameters analysed / observed: Loss of calcium peroxide as a loss of the active oxygen concentration. Measurement of PH evolution. - GLP compliance:
- not specified
- Radiolabelling:
- no
- Analytical monitoring:
- yes
- Details on sampling:
- - Sampling intervals: <30 days
- Details on test conditions:
- Deionized water solution of test item at 25ºC.
- Duration:
- 1 yr
- pH:
- 12
- Temp.:
- 25 °C
- Initial conc. measured:
- 76.8 other: % CaO2
- Positive controls:
- no
- Negative controls:
- no
- Transformation products:
- not measured
- % Recovery:
- ca. 20.5
- pH:
- 12
- Temp.:
- 25 °C
- Duration:
- ca. 1 yr
- Details on results:
- TEST CONDITIONS
-The final pH stabilized near 12.0, which is dictated by the hydroxyl anion concentration. - Validity criteria fulfilled:
- not applicable
- Conclusions:
- The test item based on 76.8% CaO2 was found to hydrolyze in water at 25ºC. At the end of one year, ca. 20.5% CaO2 was measured.
- Executive summary:
Hydrolysis of the test item was studied in deionized water at 25ºC. The test item had a content of calcium peroxide of 76.8% at the beginning of the study. The loss of calcium peroxide was determined by measurement of the active oxygen concentration. The pH remained aroud 12 throughout the study. The test item was found to hydrolyze with a remaining content of CaO2 of ca. 20.5% at the end of one year.
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- documentation insufficient for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- - Principle of test:
hydrolytic loss of calcium peroxide by measurement of active oxygen loss in a water solution.
- Short description of test conditions: Deionized water solution of test item at 25ºC.
- Parameters analysed / observed: Loss of calcium peroxide as a loss of the active oxygen concentration. Measurement of PH evolution. - GLP compliance:
- not specified
- Radiolabelling:
- no
- Analytical monitoring:
- yes
- Details on sampling:
- - Sampling intervals: <30 days
- Details on test conditions:
- Deionized water solution of test item at 25ºC.
- Duration:
- 5 mo
- pH:
- 12
- Temp.:
- 25 °C
- Initial conc. measured:
- 68.7 other: % CaO2
- Positive controls:
- no
- Negative controls:
- no
- Transformation products:
- not measured
- % Recovery:
- ca. 0.3
- pH:
- 12
- Temp.:
- 25 °C
- Duration:
- ca. 5 mo
- Details on results:
- TEST CONDITIONS
-The final pH stabilized near 12.0, which is dictated by the hydroxyl anion concentration. - Validity criteria fulfilled:
- not applicable
- Conclusions:
- The test item based on 68.7% CaO2 was found to hydrolyze in water at 25ºC. After 5 months, ca. 0.3% CaO2 was measured.
- Executive summary:
Hydrolysis of the test item was studied in deionized water at 25ºC. The test item had a content of calcium peroxide of 68.7% at the beginning of the study. The loss of calcium peroxide was determined by measurement of the active oxygen concentration. The pH remained aroud 12 throughout the study. The test item was found to hydrolyze with a remaining content of CaO2 of ca. 0.3% after 5 months.
Referenceopen allclose all
Description of key information
Data waiving (study scientifically not necessary): Calcium peroxide decomposes into hydrogen peroxide and calcium hydroxide. The hydrogen peroxide will subsequently further decompose into water and oxygen. Furthermore, the calcium hydroxide dissociates when brought into aqueous medium. The different chemical reactions are:
CaO2 + 2 H2O -> Ca2 + + 2 (OH)- + H2O2
H2O2 + H2O -> 2 H2O + O2
Ca(OH)2 -> Ca2 + + 2 OH-
The water solubility test performed on calcium peroxide also demonstrates the formation of hydrogen peroxide upon reaction of the substance with water, and the subsequent decomposition of the formed hydrogen peroxide.
Supporting study (calcium peroxide): The Hydrolysis of calcium peroxide was demonstrated in two commercial calcium peroxide based products by measurement of the loss of active oxygen concentration in deionized water solutions of the respective products at 25ºC.
Key value for chemical safety assessment
Additional information
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