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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:
23 January - 22 April, 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study was conducted according to an internationally recognised method, and under GLP. No deviation was reported. Test substance is adequately specified with isomer purity. Therefore full validation 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 05 February 2014 / signed on 07 October 2015)
Type of method:
pycnometer method
Key result
Type:
relative density
Density:
1.17
Temp.:
20 °C

Table 4.4/1: Relative density – results

Parameter

Determination 1

Determination 2

w1

21.95432

22.35157

w2

47.42399

47.67757

w3

42.73814

43.02080

w4

24.98578

25.37815

w5

43.63514

43.96405

W1

25.46967

25.32600

W2

20.78382

20.66923

W3

3.03146

3.02658

W4

18.64936

18.58590

W5

2.13446

2.08333

Density of the suspending displacement liquid at 20 °C

0.81439

0.81449

Mean value

0.81444

Vs

2.62076

2.55798

Relative density of the test substance at 20 °C

1.16

1.18

Mean value

1.17

 

The individual results were within the estimated accuracy of ± 0.05 units.
Conclusions:
The test substance is denser than water.
Executive summary:

The relative density of the test substance was measured under GLP according OECD 109 / EU A3 guideline, pycnometer method. Two runs were performed, and the mean density at 20.0 °C was calculated. This result was then converted to relative density towards water at 4 °C.

The relative density of the test substance was found to be 1.17 at 20.0 ± 0.5 °C.

Description of key information

True relative density (D20/4) = 1.17.
The substance is denser than water.

Key value for chemical safety assessment

Relative density at 20C:
1.17

Additional information

A fully reliable experimental study, conducted similarly to OECD/EU method, is available.Therefore it is considered as a key study, and the result is retained as key data.