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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:
2013-02-12
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 affected the quality of the study. Substance ID is adequately specified with isomers composition. Therefore full validation applies.
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Qualifier:
according to guideline
Guideline:
EU Method A.3 (Relative Density)
GLP compliance:
yes (incl. QA statement)
Remarks:
Inspected on 10 July 2012 / Signed on 30 November 2012
Type of method:
air comparison pycnometer (for solids)
Type:
density
Density:
1 040 kg/m³
Temp.:
20.6 °C
Key result
Type:
relative density
Density:
1.04 other: relative density is dimensionless
Temp.:
20.6 °C
Remarks on result:
other: D(20/4)

Calibration

Determination p1 [psig] p2 [psig] p3 [psig] p4 [psig]  Reference Cell Volume [cm3] Sample Cell Volume [cm3]
1 17.200 6.503 17.590 8.708 90.501 148.869
2 17.187 6.502 17.230 8.533 90.622 148.923
3 17.111 6.476 17.246 8.544 90.679 148.915

Sample

Determination Sample weight [g] Test p1(sample) [psi] p2(sample) [psi] Volume [cm3] Density [kg/m3]  Mean density [kg/m3]
1 39.1257 A 17.121 7.688 37.737 1037  1037
B 17.176 7.713 37.745 1037
C 17.131 7.693 37.750 1036
2 32.9609 A 17.222 7.504 31.570 1044  1042
B 17.072 7.443 31.692 1040
C 17.122 7.463 31.642 1042
Mean: 1040  

The results from the duplicate determinations showed reproducibility of less than ± 20 kg/m3; therefore, the results were considered acceptable.

Conclusions:
The density is similar to 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 independent samples were measured in triplicate, and the mean density at 20°C was calculated to be 1040 kg/m3. This results was then converted to relative density towards water at 4°C.

The density of the test substance at 20°C is 1040 kg/m3, and its relative density D(20/4) is 1.04.

Description of key information

The density of the test substance at 20.6°C is 1040 kg/m3, and its relative density D(20/4) is 1.04.

The density is similar to water.

Key value for chemical safety assessment

Relative density at 20C:
1.04

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.

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