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EC number: - | CAS number: -
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 26 February 2018 to 02 March 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Version / remarks:
- 2012
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Version / remarks:
- 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- pycnometer method
- Key result
- Type:
- density
- Density:
- 0.982 g/cm³
- Temp.:
- 20 °C
- Key result
- Type:
- relative density
- Density:
- 0.982 other: dimensionless
- Temp.:
- 20 °C
- Conclusions:
- Under the conditions of this study, the relative density of the test material was 0.9816.
- Executive summary:
The relative density of the test material was investigated in accordance with the standardised guidelines OECD 109 and EU Method A.3, under GLP conditions.
The density of the test material was calculated as 0.9816 ± 0.0004 g/cm^3 at 20 ± 0.2 °C, which is the mean of two values. Standard deviation was 0.0055 g/cm^3, showing acceptable correlation of the two determinations. Therefore, the study is considered valid.
Under the conditions of this study, the relative density of the test material was 0.9816.
Reference
Pre-Test Flowability
40 °C: The test material was still solid (like at room temperature)
50 °C: The test material was still solid (like at room temperature)
60 °C: The test material was a soft mass, but not flowable
70 °C: Test material was a yellowish cloudy flowable liquid
- After cooling down of the test material sample, deionised water was added. No visual change of the test material and the deionised water were observed.
Main Test
Table 1: Calculated Values
First Determination |
|||
|
Error rel. |
Error abs. |
|
Temperature (°C) |
20.0 |
|
0.1 |
Density of Water (g/cm^3) |
0.998203 |
2.00 % |
0.0002 |
Volume of Pycnometer (cm^3) |
24.9127 |
|
|
Density of Replacement Liquid (g/cm^3) |
0.9979 |
|
|
Density of Test Material (g/cm^3) |
0.9776 |
0.0305 % |
0.0003 |
Second Determination |
|||
|
Error rel. |
Error abs. |
|
Temperature (°C) |
20.2 |
|
0.1 |
Density of Water (g/cm^3) |
0.998203 |
2.00 % |
0.0002 |
Volume of Pycnometer (cm^3) |
24.9066 |
|
|
Density of Replacement Liquid (g/cm^3) |
0.9982 |
|
|
Density of Test Material (g/cm^3) |
0.9855 |
0.0375 % |
0.0004 |
Rel. = Relative
Abs. = Absolute
Results of the single determinations with the respective error as well as the mean value and its standard deviation are presented in the following tables.
Table 2: Results of Single Determinations
Determination |
Density in g/cm^3 |
Error of Determin. In g/cm^3 |
1 |
0.9776 |
0.0003 |
2 |
0.9855 |
0.0004 |
Table 3: Results – Mean Values
Parameter |
Value |
Standard Deviation |
Relative Standard Deviation |
Volume of Pycnometer (cm^3) |
24.91 |
0.0043 |
0.02 % |
Density of Test Material (g/cm^3) |
0.9816 |
0.0055 |
0.56 % |
Density of Test Material (kg/cm^3) |
981.6 |
5.5 |
0.56 % |
Relative Density of Test Material |
0.9816 |
0.0055 |
0.56 % |
Discussion
- The density of the test material was calculated as 0.9816 ± 0.0004 g/cm^3 at 20 ± 0.2 °C, which is the mean of two values.
- Precision of the value is given as maximal error of a single determination.
- Standard deviation was 0.0055 g/cm^3, showing acceptable correlation of the two determinations. Therefore, the study is considered valid.
Description of key information
Under the conditions of this study, the relative density of the test material was 0.9816.
Key value for chemical safety assessment
- Relative density at 20C:
- 0.982
Additional information
The relative density of the test material was investigated in accordance with the standardised guidelines OECD 109 and EU Method A.3, under GLP conditions. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).
The density of the test material was calculated as 0.9816 ± 0.0004 g/cm^3 at 20 ± 0.2 °C, which is the mean of two values. Standard deviation was 0.0055 g/cm^3, showing acceptable correlation of the two determinations. Therefore, the study is considered valid.
Under the conditions of this study, the relative density of the test material was 0.9816.
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