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Density

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Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Remarks:
results obtained with the reference substances, used for calibration or comparison, were not stated
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Version / remarks:
2012
Deviations:
yes
Remarks:
results obtained with the reference substance, used for calibration or comparison, were not stated
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.3 (Relative Density)
Version / remarks:
2008
Deviations:
yes
Remarks:
results obtained with the reference substance, used for calibration or comparison, were not stated
Principles of method if other than guideline:
The true density of the sample was determined using a helium stereopycnometer. The technique is based on the determination of the true volume that the powder occupies by means of the difference between the cell volume and the volume that the helium occupies that is introduced to complete the cell filling. True density is calculated taking into account the mass of the powder used. The cell used for the density determination was the so-called Large cell, with a volume of 135 cm³.
The sample was dried in a laboratory oven at a temperature of 110 °C for at least two hours and then placed in a desiccator, before testing, to reach room temperature.
Before proceeding with the sample density measurement, the proper functioning of the instrument was verified using micronized zirconium oxide as standard, which allows measurement traceability to be assured.
GLP compliance:
no
Type of method:
air comparison pycnometer (for solids)
Dynamic viscosity of test material:
Not applicable - the test item is a solid
Key result
Type:
relative density
Density:
4.097
Temp.:
20 °C
Remarks on result:
other: St.dev. 0.040 g/cm³; relative density: 4.097
Conclusions:
The true density of the test item was determined to be 4097 kg/m³ ± 40 kg/m³ by a helium stereopycnometer. The relative density of the test item was calculated to be 4.097.

Description of key information

The true density of the test item was determined to be 4097 kg/m³ ± 40 kg/m³ by a helium stereopycnometer. The relative density of the test item was calculated to be 4.097.

Key value for chemical safety assessment

Relative density at 20C:
4.097

Additional information