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Diss Factsheets

Physical & Chemical properties

Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
experimental dates: 12 October 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study was conducted according to an internationally recognised method with no deviation, and under GLP. The substance is considered to be adequately characterised, with isomers composition. Therefore full validation applies.
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
02. Oct. 2012
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
Commission Regulation No 440/2008
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
signed on 15 Nov. 2018
Type of method:
pycnometer method
Specific details on test material used for the study:
Storage conditions of test material: Stored refrigerated (2-8°C) in aluminium bottle. An injection of nitrogen conditions gas is performed into the bottle after each sampling to keep the test item under nitrogen atmosphere during the storage period.
Dynamic viscosity of test material:
According to the guideline, the pycnometer method is suitable for liquids with dynamic viscosity < 500 Pa.s. As the test item appears as a very fluid liquid, the system is considered suitable.
Type:
density
Density:
954 kg/m³
Temp.:
20 °C
Key result
Type:
relative density
Remarks:
D20/4
Density:
0.954 other: dimensionless
Temp.:
20 °C

Results of the two determinations are reported in the following table:

  Determination
 Measurement  1  2
 Temperature (°C)  20.0  20.0
 Mass of the empty pycnometer (g)  31.43896  31.61914
 Mass of the pycnometer filled with ultrapure water (g)  81.48960  81.64330
 Mass of the pycnometer filled with the test item (g)  79.27290  79.42216
 Density of the test item (kg/m3)  954.0  953.9
 Mean Density (kg/m3) 954.0

The two determinations are within the validity criteria of the method: (less than 1% of difference).

No additional determination was performed.

The relative density of the test item was calculated to be D20/4 = 0.954.

Conclusions:
The substance is less dense than water.
Executive summary:

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

Calibration was performed with water. Experiment was performed at 20 °C in duplicate, and the mean density was calculated, and converted to relative density vs water at 4°C.

The density of the test substance at 20 ºC was 954 kg/m3. The relative density D20/4 was 0.954.

Description of key information

Experimental density = 954 kg/m3 at 20°C. Relative density D20/4 = 0.954.

The substance is less dense than water.

Key value for chemical safety assessment

Relative density at 20C:
0.954

Additional information

A fully reliable experimental study, conducted according to a recognized EC method and under GLP, is available. It is considered as key study, and the result is retained as key data.