Bis(acetato-O)hydroxyaluminium

Density

Link to relevant study record(s)

Reference

Endpoint:

relative density

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from 2015-04-30 to 2015-06-26

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.3 (Relative Density)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer method

Dynamic viscosity of test material:

Not applicable. The test substance is a solid.

Key result

Type:

relative density

Density:

1.43 other: dimensionless

Temp.:

20 °C

 A measurement chamber with a volume of Vc = 7.8961 cm3 and an expansion chamber with a volume of Vr = 6.0848 cm3 were used. Two test series with different weights were performed at ambient temperature (20.0 °C).

 

Table 1: Results of the 1^st test series

Weight: 1.1628 g	p1 / psi	p2 / psi	Volume / cm^3	Density ρPR / g·cm^-3
1^stmeasurement	19.565	10.523	0.8146	1.4275
2^ndmeasurement	19.573	10.527	0.8150	1.4267
3^rdmeasurement	19.533	10.506	0.8143	1.4280
Mean			0.8146	1.4274

Table 2: Results of the 2^nd test series

Weight: 1.4153 g	p1 / psi	p2 / psi	Volume / cm^3	Density ρPR / g·cm^-3
1^stmeasurement	19.520	10.380	0.9857	1.4358
2^ndmeasurement	19.510	10.374	0.9867	1.4344
3^rdmeasurement	19.566	10.403	0.9878	1.4328
Mean			0.9867	1.4343

Mean density ρ_PR for the two test series: 1.4309 g/cm³.

Conclusions:

The relative density at 20 °C and compared to water at 4 °C was determined to be: D=1.43 (20.0 °C).

Executive summary:

A study was conducted according to OECD TG 109, Regulation (EC) No 440/2008 method A.3 and OPPTS 830.7300 to determine the relative density of the test item. The density was determined in six independent determinations - two runs with three measurements each. Using the pycnometer method the density was determined to be 1.4309 ± 0.004 g/cm³ at 20 °C and the relative density 1.43 ± 0.01 with respect to water at 4 °C respectively. The standard deviation reflects the distinguished correlation of the individual determinations. No observations were made which cause doubt on the validity of the outcome of the study.

Description of key information

The relative density at 20 °C and compared to water at 4 °C was determined to be: D=1.43 (20.0 °C).

Key value for chemical safety assessment

Relative density at 20C:

1.43

Additional information

A study was conducted according to OECD TG 109, Regulation (EC) No 440/2008 method A.3 and OPPTS 830.7300 to determine the relative density of the test item (reference 4.4-1). The density was determined in six independent determinations - two runs with three measurements each. Using the pycnometer method the density was determined to be 1.4309 ± 0.004 g/cm³ at 20 °C and the relative density 1.43 ± 0.01 with respect to water at 4 °C respectively. The standard deviation reflects the distinguished correlation of the individual determinations. No observations were made which cause doubt on the validity of the outcome of the study.