Trimethoxy(2,4,4-trimethylpentyl)silane

Density

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

13-Jul-2015

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

GLP compliance:

no

Type of method:

oscillating densitimeter

Type:

density

Density:

0.906 g/cm³

Temp.:

20 °C

Type:

relative density

Density:

0.906

Temp.:

20 °C

Results

Measurement	Density 20 °C [g/cm^3]	Relative density D^20/4*
Test 1	0.90574	0.90577
Test 2	0.90574	0.90577
Mean value	0.906	0.906

 

*The relative density D²⁰/₄ is the ratio between the measured density of the test substance at 20 °C and the density of water at 4 °C (= 0.99997 g/cm3). The relative density has no dimension.

Check measurement: Density of degassed deionized water at 20 °C: 0.99820 g/cm3

Reference value: 0.9982 + 0.0005 (20 °C)

Conclusions:

A density of 0.906 g/cm³ at 20°C and a relative density of 0.906 were determined in a reliable study conducted according to an appropriate test protocol. It was not conducted according to GLP.

Reference 2

Endpoint:

density, other

Remarks:

density

Type of information:

(Q)SAR

Adequacy of study:

supporting study

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:

QSAR prediction

Principles of method if other than guideline:

The result was obtained using an appropriate QSAR method (see attached QMRF and QPRF for details).

Type:

density

Density:

0.9 g/cm³

Temp.:

20 °C

Conclusions:

A density value of 0.9 g/cm3 has been determined for the substance using an appropriate estimation method. The result is considered reliable.

Description of key information

0.906 g/cm³ at 20°C (OECD 109, oscillating densitimeter)

Key value for chemical safety assessment

Relative density at 20C:

0.906

Additional information

The key study is supported by a predicted density value of 0.9 g/cm³ determined using a validated QSAR method.