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Physical & Chemical properties

Density

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Endpoint:
density, other
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
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
Justification for type of information:
See attached QMRF/QPRF
Principles of method if other than guideline:
The result was obtained using an appropriate QSAR method (see attached QMRF and QPRF for details).

The model for density has been developed for, and applies specifically to, organosilicon compounds. It is a multiple linear regression based model with descriptors representing counts of different atoms and groups that may be present in the molecule.
Key result
Type:
density
Density:
1.04 g/cm³
Temp.:
20 °C
Conclusions:
A density value of 1.04 g/cm3 at 20°C has been determined for the substance using an appropriate estimation method. The result is considered reliable.
Endpoint:
relative density
Type of information:
other: Data obtained from a secondary source
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Principles of method if other than guideline:
Information on test guideline not stated
GLP compliance:
not specified
Type of method:
other: Densimeter
Key result
Type:
relative density
Density:
1.17 other: Unitless
Temp.:
20 °C
Conclusions:
A relative density value of 1.17 at 20°C was reported for the substance in a secondary source which has been subject to peer review and in which the original sources are traceable. The result is considered reliable.

Description of key information

Relative density: 1.17 at 20°C

Key value for chemical safety assessment

Relative density at 20C:
1.17

Additional information

A relative density value of 1.17 at 20°C was reported for the substance in a secondary source which has been subject to peer review and in which the original sources are traceable. Also, a density value of 1.04 g/cm3 at 20°C was determined for the substance using a validated QSAR estimation method. The two results are in reasonable agreement and are used as weight of evidence.

In another source to which reliability could not be assigned, the substance was reported to have a density value of approximately 1.168 g/cm3 and specific gravity of 1.16. No information on temperature was stated.