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Diss Factsheets

Physical & Chemical properties

Density

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
relative density
Remarks:
Other density types indicated (migrated information): density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Between 03 November 2011 and 24 December 2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Valid and conclusive guideline study under GLP
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
Commission Regulation (EC) No 440/2008 of 30 May 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
1995
Deviations:
no
GLP compliance:
yes
Remarks:
Department of Health of Government of the U.K., inspection 19-21 July 2011
Type of method:
pycnometer method
Remarks:
(Quantachrome MVP-2 gas comparison pycnometer)
Type:
relative density
Density:
0.91
Temp.:
21 °C
Remarks on result:
other: Temperature ± 0.5 °C
Type:
density
Density:
910 kg/m³
Temp.:
21 °C
Remarks on result:
other: Temperature ± 0.5 °C

Calibration

The pressure readings and the calculated volume for the reference and calibration cells are shown in the following table:

Table 2: Calibration data

 Determination  P1  P2  P3  P4  Vref [cm³]  Vsample [cm³]
 1  17.452  6.603  17.087  8.464  90.602  148.863
 2  17.151  6.494  17.270  8.559  90.742  148.913
 3  17.371  6.580  17.126  8.493  90.714  148.769

Sample

The pressure readings, calculated volumes and density values obtained for the test item are shown in the following table:

Table 3: Sample data

 Determination  Test  P1sample  P2sample  Volume [cm³]  Density [kg/m³]  Mean Density [kg/m³]
 1  1  17.198  9.069  67.6  912  911
 2  17.045  8.993  67.7  910
 3  17.015  8.980  67.7  910
 2  1  17.334  10.114  84.1  910  909
 2  17.207  10.044  84.2  909
 3  17.254  10.071  84.2  909
Conclusions:
Lighter than water, relative density 0.910 at 21.0 ± 0.5 °C
Executive summary:

The density of the test item was determined in a GLP-compliant study using a gas comparison pycnometer according to the EU A.3 (2008) and OECD TG 109 (1995) protocol. The experiment is deemed valid, conclusive and thus suitable for assessment without restrictions.

The relative density was measured to be 0.910 at 21.0 ± 0.5 °C, which corresponds to a density of 910 kg/m³, which indicates that the test item is lighter than water.

Description of key information

Lighter than water (EU Method A.3)

Key value for chemical safety assessment

Relative density at 20C:
0.91

Additional information

The density was determined in a GLP-compliant study (Fox & White 2012, Harlan Report no. 41103263) using a gas comparison pycnometer according to the EU A.3 (2008) and OECD TG 109 (1995) protocol. The experiment is deemed valid, conclusive and thus suitable for assessment without restrictions.

The relative density was measured to be 0.910 at 21.0 ± 0.5 °C, which corresponds to a density of 910 kg/m³ and indicates that the submission item is lighter than water.