Trichloro(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silane

Density

Link to relevant study record(s)

Reference

Endpoint:

density, other

Type of information:

(Q)SAR

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

results derived from a valid (Q)SAR model, but not (completely) 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:

1.6 g/cm³

Temp.:

20 °C

Conclusions:

A density value of 1.6 g/cm3 at 20°C has been determined for the substance using an appropriate estimation method. The result is considered to be reliable.

Description of key information

Density: 1.6 g/cm3 at 20°C (QSAR)

Additional information

There are no reliable measured data for the substance. A predicted density of 1.6 g/cm³ at 20°C was determined for [2-(perfluorohexyl)ethyl]trichlorosilane using a validated QSAR estimation method. Although the result is outside the range of the model (0.8 - 1.4 g/cm³⁾, it is considered to be a reliable indication that the density of the substance is much greater than that of water.

In a secondary source to which reliability could not be assigned, a density value of 1.649 g/cm³ at 20°C was reported for the substance. The reported value is in good agreement with the predicted density.