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EC number: 204-980-2 | CAS number: 130-20-1
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- April 13, 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- air comparison pycnometer (for solids)
- Key result
- Type:
- relative density
- Density:
- 1.61 g/cm³
- Temp.:
- 20 °C
- Executive summary:
The relative density of the test item at ambient temperature (compared to water at 4 °C) was determined to be:
D4R = 1.61 (20.0 °C)
Reference
Results:
A measurement chamber with a volume of Vc= 7.8961 cm3and an expansion chamber with a volume of Vr= 6.0848 cm3were used.
Two test series with different weights were performed at ambient temperature (20.0 °C). For results seeTable1andTable2.
Table1: Results of the 1sttest series
Weight: 1.6277 g |
p1/ psi |
p2/ psi |
Volume / cm3 |
DensityrPR/ g·cm-3 |
1. measurement |
19.584 |
10.393 |
1.016 |
1.603 |
2. measurement |
19.576 |
10.386 |
1.019 |
1.597 |
3. measurement |
19.561 |
10.378 |
1.019 |
1.597 |
Mean |
1.018 |
1.599 |
Table2: Results of the 2ndtest series
Weight: 1.7556 g |
p1/ psi |
p2/ psi |
Volume / cm3 |
DensityrPR/ g·cm-3 |
1. measurement |
19.524 |
10.311 |
1.086 |
1.617 |
2. measurement |
19.589 |
10.344 |
1.088 |
1.614 |
3. measurement |
19.516 |
10.307 |
1.086 |
1.617 |
Mean |
1.087 |
1.616 |
Mean densityPR for the two test series: 1.61 g/cm3
Description of key information
The relative density of the test item at ambient temperature (compared to water at 4 °C) was determined to be: 1.61 at 20.0°C
Key value for chemical safety assessment
- Relative density at 20C:
- 1.6
Additional information
The density of the test item was measured at ambient temperature with the gas comparison pycnometer. A constant temperature of the environment of the apparatus was regulated by an air-conditioning unit and controlled with a thermometer. The apparatus with the test item was swept 10-times with 19.5 psi Helium. Thereafter, the valve to the expansion chamber was opened and a certain amount of gas (Helium, purity min. 99.99 %) was expanded from the measurement chamber containing the test item to the expansion chamber. From the pressure drop from p1 to p2 the volume of the test item was calculated. The estimated accuracy of this method is 0.01 g/cm³.
The relative density of the test item at ambient temperature (compared to water at 4 °C) was determined to be: 1.61 at 20.0°C
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