Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
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: 201-081-7 | CAS number: 78-08-0
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- density, other
- Remarks:
- density
- Type of information:
- (Q)SAR
- Adequacy of study:
- key study
- Study period:
- 2011
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
- Principles of method if other than guideline:
- The result was obtained using an appropriate QSAR method (see attached QMRF and QPRF for details).
Density may be predicted by various available software methods, such as SPARC, or may be approximately calculated from molar volume using the method of Abraham and McGowan (1987) (ECHA 2008). However, the SPARC and Abraham and McGowan methods are not parameterised for Silicon, and therefore cannot reliably be used in this case. The Abraham and McGowan method was checked to see if a silicon correction factor could be derived, but this was not found to be feasible. - GLP compliance:
- no
- Key result
- Type:
- density
- Density:
- 0.92 g/cm³
- Temp.:
- 25 °C
- Conclusions:
- A density value of 0.92 g/cm³ at 25°C was obtained for the substance using an appropriate calculation method. The result is considered to be reliable.
Reference
Description of key information
Density: 0.92 g/cm³ at 25°C (QSAR)
Key value for chemical safety assessment
Additional information
A predicted density value of 0.92 g/cm3 at 25°C was obtained using an appropriate calculation method. The result is considered to be reliable. This is supported by measured values of approximately 0.9 – 0.92 (at 20 – 25°C) from secondary sources (company data). The supporting results are in good agreement with 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.
