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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:
April 25, 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
according to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
adopted October 02, 2012
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
pycnometer method
Specific details on test material used for the study:
Test Item was used in its initial form.
Type:
relative density
Density:
1.074
Temp.:
20 °C

Density of test item

Empty pycnometer, g Pycnometer with test item, g Test item in the pycnometer, g Density of the test item, g/cm3
31.68681 57.69646 26.00965 1.072
31.68446 57.77763 26.09317 1.0754
31.68428 57.77107 26.08679 1.0751

Mean: 

1.0742

Confidence int. (95 %):

0.00476

RSD (CV %):

0.178

The relative density was determined to be 1.0742 ± 0.00476 (with 95 % confidence interval) at 20 °C.

Calibration of the Pycnometer

Measured data Empty pycnometer, g Pycnometer with water, g
1 31.68547 55.90859
2 31.68672 55.91005
3 31.68632 55.91022
4 31.68599 55.90167
5 31.68605 55.90321
Density of water at 20 °C, g/cm3: 0.99823 -
Volume of pycnometer, cm3: 24.2636 -
Conclusions:
Relative density: 1.0742 at 20 °C
Executive summary:

The relative density of test item was determined in accordance with OECD guideline 109, using pycnometer method.

The calibration was performed with ultrapure water and the empty, clean pycnometer (with all accessories) was weighted. The weight of test item was calculated as the difference between the weight of the empty and the levelled pycnometer. The pycnometer was filled with test item in three replicates and was measured.

The relative density was determined to be 1.0742 ± 0.00476 (with 95 % confidence interval) at 20 °C.

Conclusion

Relative density: 1.0742 at 20 °C

Description of key information

Relative density: 1.0742 at 20 °C

Key value for chemical safety assessment

Relative density at 20C:
1.074

Additional information

OECD guideline 109 - pycnometer method