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Physical & Chemical properties

Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
24 November 2015 to 11 January 2016
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
The study was conducted according to an internationally recognized method, and under GLP. Restriction apply considering that a potential deformation of the pycnometer may occur when the heated test item is placed on the apparatus. Therefore a checking the apparatus volume after the test is recommended to confirm that the result can be expressed with 4 decimals. Test substance is adequately specified. Therefore validation with slight restrictions applies.
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
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. certificate)
Remarks:
UK GLP compliance programme (inspected on 17 June 2015 / signed on 24 September 2015)
Type of method:
pycnometer method
Key result
Type:
density
Density:
1 196 kg/m³
Temp.:
20 °C
Key result
Type:
relative density
Remarks:
D20/4
Density:
1.196 other: unitless
Temp.:
20 °C

Table 4.4/1: Density – results

 

Measurement

 

Determination

1

2

Mass of glass vessel (g)

37.6740

Mass of glass vessel and purified water at 21.8 °C (g)

77.9064

Mass of glass vessel and test item at 20.0 °C (g)

85.9252

85.8986

Density of water at 21.8 °C (kg/m3)

997.82

Density (kg/m3)

1.197 x 103

 

1.196 x 103

 

Relative density (D20/4)

1.197

 

1.196

 

 

Mean density: 1.196 x 103 kg/m3

Mean relative density (D20/4): 1.196

Test item temperature: 20.0 ± 0.5 °C

The difference between both determinations was below 20 kg/m3. Therefore, no additional determination was performed.

The heated test item sample with the air bubbles removed which was used in the melting/ freezing point test was also used for this test.

Executive summary:

The density of the test substance was measured under GLP according OECD 109 / EU A3 guideline, using the pycnometer method.

The heated test item sample with the air bubbles removed which was used in the melting/ freezing point test was also used for this test. Two runs were performed. As the difference between both determinations was below 20 kg/m3 , the results were considered as valid and the mean density at 20.0 °C was calculated. This result was then converted to relative density towards water at 4 °C.

Mean density: 1.196 x 103kg/m3 at 20.0 ± 0.5 °C

Mean relative density (D20/4) : 1.196

Description of key information

The density of the test item has been determined to be1.196 x 103kg/m3at 20.0 ± 0.5 °C and a relative density (D20/4) of 1.196.

Key value for chemical safety assessment

Relative density at 20C:
1.196

Additional information

A reliable GLP experimental study, conducted according to a recognized OECD/EC method (pycnometer method), is available. It is considered as a key study.