Registration Dossier
Registration Dossier
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The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 231-158-0 | CAS number: 7440-48-4
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- density, other
- Remarks:
- density and relative density
- Type of information:
- other: handbook data
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Not applicable: Handbook data
- GLP compliance:
- no
- Type of method:
- other: no data
- Type:
- density
- Density:
- 8.86 g/cm³
- Temp.:
- 20 °C
- Remarks on result:
- other: relative density: 8.86
- Conclusions:
- According to the reference, cobalt has a relative density of 8.86.
- Endpoint:
- density, other
- Remarks:
- density and relative density
- Type of information:
- other: handbook data
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Not applicable: Handbook data
- GLP compliance:
- no
- Type of method:
- other: no specified
- Type:
- density
- Density:
- 8.92 g/cm³
- Temp.:
- 20 °C
- Remarks on result:
- other: relative density: 8.92
- Conclusions:
- According to the reference, cobalt has a relative density of 8.92.
Referenceopen allclose all
According to the reference the density values can be assumed to refer to temperatures near room temperature. For this reason 20 °C was filled in as temperature.
The relative density was calculated from the the value of the handbook. The value was divided by the relative density of water (1.000).
In the reference no temperature at which the density was measured was stated. It was assumed that the relative density was measured at 20 °C.
Description of key information
The relative density of cobalt is given as 8.86 and 8.92. The mean value of 8.89 will be used for CSA.
Key value for chemical safety assessment
- Relative density at 20C:
- 8.89
Additional information
For the evaluation of this endpoint data from two handbooks were used. According to the REACH regulation (“ECHA, guidance on information requirements and chemical safety assessment – chapter R.7a”), it is allowed to use specific handbook data as a reliable data source. Useful reference books and data compilations containing peer reviewed physico-chemical data include the Merck Index and the CRC Handbook of Chemistry and Physics.
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.
