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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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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Physical & Chemical properties


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relative density
Type of information:
Adequacy of study:
key study
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:
Please refer to the attached QM(P)RF documents
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.
relative density
0.87 g/cm³
20 °C
A density of 0.87 g/cm3 at 20°C has been determined for the substance using an appropriate estimation method. The result is considered reliable.

Description of key information

Density: 0.87 g/cm3 at 20°C (QSAR)

Key value for chemical safety assessment

Relative density at 20C:

Additional information

A predicted density of 0.87 g/cm3 at 20°C was obtained for the submission substance using a validated QSAR estimation method. The result is considered to be reliable and was selected as key study. In a secondary source to which reliability could not be assigned, a density value of 0.75 g/cm3 at 25°C was reported for the substance.