Aluminium triethanolate

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

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:

yes (incl. QA statement)

Type of method:

air comparison pycnometer (for solids)

Type:

density

Density:

1.22 g/cm³

Temp.:

20 °C

Type:

relative density

Density:

1.22 other: dimensionless

Temp.:

20 °C

Duplicate determinations were performed to ensure a reproducibility of less than ± 20 kg/m3 was obtained. The first replicate in each determination was rejected by application of the Grubb’s outlier test. This may have been due to equilibration of the test item under the test conditions.

The mass density of a substance varies with temperature and pressure and this variance is typically negligible for solids. Increasing the temperature of a substance may decrease its density by increasing the volume of that substance. Typical thermal expansion coefficients of solids are in the order of 10-5 °C-1, and the volumetric expansion of stainless steel (used as calibration spheres) at 20 °C is approximately 5.2 x 10-5 °C-1. Therefore, a change in temperature of several degrees will have no significant effect on the volume and hence the density of a solid substance. Therefore, it was considered that the difference in temperature between 20.0 °C and normal laboratory conditions did not have a significant effect on the determined density, and therefore the calculated relative density.

The temperature of the calibration and main test were 19.4 °C and 19.8 °C respectively. Therefore, the test result has been reported with a temperature of 20.0 ± 1.0 °C.

Density values:

Determination	Test	P1(sample)	P2(sample)	Volume (cm3)	Density (Kg/m3)	Mean density (Kg/m3)
	A*	17.065	7.579	35.206	1198*	1220
	B	17.079	7.561	34.550	1221
	C	17.014	7.533	34.571	1220
	A*	17.033	7.662	37.804	1175*	1218
	B	17.075	7.630	36.456	1218
	C	17.053	7.620	36.451	1218

* Data point rejected by application of Grubb’s outlier test

Conclusions:

The density of the test item has been determined to be 1.22 g/cm3 at 20.0 ± 1.0 °C (relative density: 1.22).

Description of key information

The density of the test item has been determined to be 1.22 g/cm3 at 20.0 ± 1.0 °C (relative density: 1.22). The density of the test item has been determined to be 1.22 g/cm3 at 20.0 ± 1.0 °C (relative density: 1.22).

Key value for chemical safety assessment

Relative density at 20C:

1.22