Registration Dossier
Registration Dossier
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EC number: 215-138-9 | CAS number: 1305-78-8
Appearance / physical state / colour
Administrative data
Link to relevant study record(s)
- Endpoint:
- appearance / physical state / colour
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2010-03-23 to 2010-04-30
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- no guideline required
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- signed 2009-11-26
- Physical state at 20°C and 1013 hPa:
- solid
- Form:
- powder
- Colour:
- Beige
- Odour:
- other: no data
- Substance type:
- inorganic
- Conclusions:
- According to the study report, calcium oxide is a beige powder at room temperature.
- Endpoint:
- appearance / physical state / colour
- Type of information:
- other: handbook data
- Adequacy of study:
- weight of evidence
- Study period:
- not applicable
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: According to the REACH regulation (“ECHA, guidance on information requirements and chemical safety assessment – chapter R.7a”), it is allowed to use certain handbook data as a reliable data source.
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Data were obtained from the Römpp lexicon.
- GLP compliance:
- no
- Physical state at 20°C and 1013 hPa:
- solid
- Form:
- crystalline
- Form:
- powder
- Colour:
- colourless
- Odour:
- odourless
- Substance type:
- inorganic
- Conclusions:
- According to the reference, calcium oxide forms colourless crystals or powder.
- Endpoint:
- appearance / physical state / colour
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 26 January 2010 to 04 March 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study
- Qualifier:
- no guideline required
- Principles of method if other than guideline:
- The appearance of the test material was determined by visual assessment.
An aliquot of the test material was transferred to a clear glass vessel, equilibrated to 20 ± 0.5 °C and visually inspected under natural light on a white background. - GLP compliance:
- yes (incl. QA statement)
- Physical state at 20°C and 1013 hPa:
- solid
- Form:
- powder
- Colour:
- White
- Substance type:
- inorganic
- Conclusions:
- The appearance of the test material has been visually assessed as a fine white powder which tends to form clumps, at 20 ± 0.5 °C.
Referenceopen allclose all
Description of key information
According to a GLP compliant study report, supported by reliable handbook data, calcium oxide is a beige or grey-white powder at room temperature.
Key value for chemical safety assessment
- Physical state at 20°C and 1013 hPa:
- solid
Additional information
For the evaluation of this endpoint, the result of a GLP compliant study report was used as key information supported by reliable handbook data.Since the study was conducted with a sample representative of the substance to be registered, this was considered the most reliable data to represent calcium oxide. Based on available data, calcium carbonate is a white powder or colourless crystals, and itmay be expected that grades of calcium oxide with up to 35% calcium carbonate will be of similar appearance to that described in the key study.
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.
