Tetraethyl orthosilicate

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2015-07-13

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Remarks:

In compliance with a relevant quality system (ISO 9001:2008)

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

GLP compliance:

no

Other quality assurance:

other: ISO 9001 (2008)

Type of method:

oscillating densitimeter

Key result

Type:

relative density

Density:

0.934

Temp.:

20 °C

Measurement	Density 20 °C [g/cm^3]	Relative density D20/4*
Test 1	0.93354	0.93357
Test 2	0.93354	0.93357
Mean value	0.934	0.934

*The relative density D_20/4 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.

Conclusions:

A relative density value of 0.934 at 20°C was determined for the substance in accordance with a relevant test method and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable.

Description of key information

Relative density: 0.934 at 20°C (OECD 109)

Key value for chemical safety assessment

Relative density at 20C:

0.934

Additional information

A relative density value of 0.934 at 20°C was determined for the substance using an oscillating densitometer in accordance with OECD Test Guideline 109 and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable and is selected as key study.

 

The key study is supported by a relative density value of 0.93 at 20°C which was reported for the substance in a handbook or collection of reliable data which has been subject to peer review and in which the original references are traceable. In addition, a predicted density value of 0.96 g/cm³ at 20°C was obtained for the substance using a validated QSAR estimation method.

 

In available secondary sources to which reliability could not be assigned, density values of 0.93 - 0.94 g/cm³ at 20 - 25°C were reported for the submission substance.