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relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From 2008-07-03 to 2008-10-17
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
The study was conducted according to an internationally recognised method, and under GLP. No deviation affected the good quality of the study. The substance is considered to be adequately characterised with its purity. Therefore full validation applies.
according to guideline
OECD Guideline 109 (Density of Liquids and Solids)
according to guideline
EU Method A.3 (Relative Density)
GLP compliance:
yes (incl. QA statement)
Inspected on 05th to 06th and 26th to 30th November 2007 / Decision 30 April 2008 / Signed on 12th November 2008
Type of method:
air comparison pycnometer (for solids)
1.081 g/cm³
20.2 °C
Key result
relative density
1.081 other: relative density has no dimension
20 °C

All manipulations were performed at 20.2°C +/- 0.1°C.

Results of the calibration

Calibration volume (Vcal) = 2.183 cm3

Measurement p1 [psi] p2 [psi] p3 [psi] p4 [psi] Vref [cm3] Vcell [cm3]
1 17.850 5.993 18.114 6.780 6.992 13.833
2 18.328 6.156 17.820 6.671 7.010 13.860
3 17.451 5.861 18.575 6.953 7.011 13.863
Mean:         7.004 13.852

Determination of the density of test item

Sample No. Sample weight [g] Measurement p1(sample) [psi] p2(sample) [psi] V(sample) [cm3] Density [g/cm3]
1 1.626 1 15.404 5.574 1.500 1.084
2 15.118 5.472 1.505 1.080
3 16.218 5.870 1.505 1.080
2 1.622 1 16.173 5.853 1.503 1.079
2 16.149 5.844 1.502 1.080
3 16.221 5.870 1.501 1.080
Mean: 1.081
Standard deviation +/- [g/cm3] 0.002
The substance is slightly more dense than water.
Executive summary:

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

After triplicate calibration, two independant samples were measured in triplicate, and the mean density at 20.2°C was calculated to be 1.081 g/cm3. This results was then converted to relative density towards water at 4°C.

Description of key information

The substance is slightly more dense than water.

Key value for chemical safety assessment

Relative density at 20C:

Additional information

A fully reliable study, conducted according to a recognized OECD/EU method and under GLP, is available. It is considered as a key study. The result is retained as key data for purpose of CSA.