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Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
13 September 2012 to 12 December 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
pycnometer method
Key result
Type:
density
Density:
1 160 kg/m³
Temp.:
20 °C
Key result
Type:
relative density
Density:
1.16
Temp.:
20 °C

Table 1: Duplicate determinations of relative density

Measurement

Determination

1

2

Mass of pycnometer (g)

17.0617

17.4994

Mass of pycnometer and distilled water at 20.0 °C (g)

27.3517

27.2319

Mass of pycnometer and test material at 20.0 °C (g)

28.9208

28.9845

Density of water at 20.0 °C (kg/m³)

998.20

998.20

Density (kg/m³)

1150

1180

Relative density

1.15

1.18

Mean relative density determined to be 1.16 at 20.0 ± 0.5 °C

Conclusions:
Under the conditions of this study, the relative density of the test material was determined to be 1.16 at 20.0 ± 0.5 °C.
Executive summary:

The relative density of the test material was determined in accordance with the standard guidelines EU Method A.3 and OECD 109 under GLP conditions using a pycnometer.

Calibration of the pycnometer was carried out using distilled water. The pycnometer was then emptied and dried to constant weight. The mass of test material required to fill the pycnometer was then determined. The pycnometer with a defined volume was weighed and filled with the test material. After equilibration at 20 °C in a water bath, the filled pycnometer was re-weighed and the density and relative density calculated. The study was conducted in duplicate.

Under the conditions of this study, the relative density of the test material was determined to be 1.16 at 20.0 ± 0.5 °C.

Description of key information

The relative density of the test material was determined to be 1.16 at 20.0 ± 0.5 °C.

Key value for chemical safety assessment

Relative density at 20C:
1.16

Additional information

The relative density of the test material was determined in accordance with the standard guidelines EU Method A.3 and OECD 109 under GLP conditions using a pycnometer. The study was assigned a reliability score of 1 in accordance with the criteria for assessing data quality set forth by Klimisch et al. (1997).

Calibration of the pycnometer was carried out using distilled water. The pycnometer was then emptied and dried to constant weight. The mass of test material required to fill the pycnometer was then determined. The pycnometer with a defined volume was weighed and filled with the test material. After equilibration at 20 °C in a water bath, the filled pycnometer was re-weighed and the density and relative density calculated. The study was conducted in duplicate.

Under the conditions of this study, the relative density of the test material was determined to be 1.16 at 20.0 ± 0.5 °C.