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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:
August 2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study performed according to international guidelines but not under GLP and with some lack of details (no report number, criteria of validity not indicated).
Reason / purpose:
reference to other study
Qualifier:
according to
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
not specified
Qualifier:
according to
Guideline:
EU Method A.3 (Relative Density)
Deviations:
not specified
GLP compliance:
no
Type of method:
oscillating densitimeter
Key result
Type:
relative density
Density:
0.916
Temp.:
20 °C
Remarks on result:
other: relative density at 20 °C in reference with water at 4 °C

The obtained value is the mean result of three determinations at 20 ± 0.5 °C :

Assay No.

Density (kg/m3)

Relative density

1

916.1

0.9161

2

916.2

0.9162

3

916.2

0.9162

Mean ± standard deviation

916.2 ± 0.1

0.9162 ± 0.0001

Relative density = density (kg/m3) / 999.975 (kg/m3) (density of water at 4°C).

The average density at 20°C ± 0.5 °C of the test item is 916 ± 1 kg/m3.

Conclusions:
The relative density of the test item at 20°C is 0.916 ± 0.001.
Executive summary:

The relative density of the test item has been measured according to OECD Guideline 109 and to EU Method A.3.

Using an oscillating densimeter, the relative density of the test item at 20 °C in reference with water at 4 °C was determined as 0.916 ± 0.001.

The result has been considered as reliable with restrictions because the test was performed in complinace with edicted guidelines giving scientifically valid results but some details are lacking in the report (no GLP, no report number, criteria of validity of the results not given).

Description of key information

Relative density of the test item at 20°C is 0.916 ± 0.001.

Key value for chemical safety assessment

Relative density at 20C:
0.916

Additional information

The relative density of the test item at 20°C was determined in a study perfomed according to OECD guideline 109 and EU method A3 using an oscillating densimeter. The value was considered with a reliability of 2 (reliable of restrictions) because the result is scientifically acceptable but not

obtained under GLP and some details were lacking in the report. However the relative density is valid for key value and supported by consistent data from one study giving consistent results.