Registration Dossier
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EC number: 262-911-1 | CAS number: 61698-32-6
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From 30 November 2021 to 11 March 2022
- 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
- Specific details on test material used for the study:
- Actual storage conditions: Stored in original plastic bag in a ventilated closed cupboard at normal laboratory temperature.
- Dynamic viscosity of test material:
- not relevant (solid)
- Key result
- Type:
- relative density
- Density:
- 0.373 other: The relative density has no dimension.
- Temp.:
- 20 °C
- Type:
- density
- Density:
- 372.9 kg/m³
- Temp.:
- 20 °C
- Conclusions:
- The substance is much less dense than water.
- Executive summary:
The density of the test substance was measured according OECD 109 / EU A3 guideline, pycnometer method (with aqueous saturated solution as displacement liquid), and under GLP .
Calibration was performed with water. Experiment was performed at 20 °C in triplicate, and the mean density was calculated from the two closest results. It was converted to relative density vs water at 4°C.The density of the test substance at 20°C was 372.9 kg/m3. The relative density D20/4 was 0.373.
Reference
Results of the three determinations are reported in the following table:
| Determination | 1 | 2 | 3 |
| m0 (g) | 31.43907 | 31.61969 | 31.14173 |
| m1 (g) | 81.4911 | 81.6445 | 81.2637 |
| m2 (g) | 81.4917 | 81.6447 | 81.2639 |
| m3 (g) | 33.94589 | 34.91411 | 34.48477 |
| m4 (g) | 77.29837 | 76.10855 | 75.29161 |
| Density ρe (g/ml) | 0.37347 | 0.37240 | 0.37015 |
The density obtained for each determination is close enough to respect validation criteria (difference below 1%).
Determinations 1 and 2 have the closest results (0.29% of difference). Their arithmetic mean is 372.9 kg/m3 at 20.0 +/- 0.1°C. The corresponding relative density of the test item is D20/4 = 0.373
As the results obtained with the pycnometer were found unusually low and as the substance is difficult to handle, a short tapped density test (non-GLP) was performed with the raw substance to compare results. A similar value (0.37 g/ml) was obtained and confirms the results obtained with the pycnometer method.
Description of key information
Density = 372.9 kg/m3 at 20°C. Relative density D20/4 = 0.373. The substance is much less dense than water. (OECD 109, pycnometer with displacement liquid, GLP; Noel Y., 2022)
Key value for chemical safety assessment
- Relative density at 20C:
- 0.373
Additional information
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