Registration Dossier
Registration Dossier
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EC number: 280-041-0 | CAS number: 82799-44-8
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2017-04-12 - 2017-06-01
- 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:
- yes (incl. QA statement)
- Type of method:
- air comparison pycnometer (for solids)
- Key result
- Type:
- relative density
- Density:
- 1.27
- Temp.:
- 20 °C
- Conclusions:
- relative density (at 20 °C ±0.01 °C): 1.27
- Executive summary:
According to OECD Guideline 109 and EU Method A.3., the relative density D420of the test item 2,4-Diethyl-9H-thioxanthen-9-one at 20 °C ±0.01 °C (compared to water at 4 °C) is D420=1.27
Reference
Two tests with different amounts of the test item were performed to determine the relative density D420at a temperature of 20 °C ± 0.01 °C.
Table: Results of the measurement of the density of the test item
Test No. |
Temperature [°C] |
Amount of test item [g] |
Average sample volume [cm³] |
Density [g/cm³]* |
1 |
20 |
10.77 |
8.48688 |
1.26902 |
2 |
20 |
11.07 |
8.74479 |
1.26590 |
* The pressurizing-expansion cycles are performed until 5 subsequent volume measurements have a relative standard deviation (RSD) of ≤ 0.2 %.
The mean density of the test item at 20 °C was 1.26746 g/cm³. The relative density D420 was calculated by dividing the density of the test item by the density of water at 4 °C (0.9999750 g/cm³).
Description of key information
relative density (determined using EU Method A.3 / OECD 109; GLP): 1.27 at 20 ±0.1 °C (arithmetic mean of two determinations)
Key value for chemical safety assessment
- Relative density at 20C:
- 1.27
Additional information
The relative density of the test material was investigated using a gas comparison pycnometer, designed to be compatible with EU Method A.3 and OECD 109. A reliability score of 1 was assigned, in accordance with the criteria for assigning data quality in line with the principles described by Klimisch (1997).
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