Registration Dossier
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EC number: 905-837-3 | CAS number: -
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- 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)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- pycnometer method
- Type:
- relative density
- Density:
- 1.01 other: unitless
- Temp.:
- 20 °C
- Conclusions:
- The relative density of the test item was determined to be 1.01 at 20 °C.
- Executive summary:
The relative density of the test item was determined in a study following OECD 109 and EC Method A.3 guidelines, using the pycnometer method. The relative density of the test item was determined to be 1.01 at 20 °C.
The study is a GLP compliant, guideline experimental study and is fully acceptable for assessment of this endpoint.
Reference
Table 1: Results of relative density study
| Parameter | Replicate 1 | Replicate 2 |
| w1 | 24.00836 | 25.01852 |
| w2 | 28.98788 | 49.73160 |
| w3 | 44.27675 | 45.07306 |
| w4 | 27.04043 | 28.00670 |
| w5 | 44.87444 | 45.65843 |
| W1 | 24.97952 | 24.71308 |
| W2 | 20.26839 | 20.05454 |
| W3 | 3.03207 | 2.98818 |
| W4 | 17.83401 | 17.65173 |
| W5 | 2.43438 | 2.40281 |
| ptl | 0.80978 | 0.80987 |
| Mean ptl | 0.80982 | |
| Vs | 3.006 | 2.967 |
| Dt4 | 1.009 | 1.007 |
| Mean Dt4 | 1.01 | |
Where:
w1= weight of empty pycnometer (g)
w2= weight of pycnometer and water (g)
w3= weight of pycnometer and displacement liquid (g)
w4= weight of pycnometer and test item (g)
w5= weight of pycnometer, test item and displacement liquid (g)
W1 = Mass of water to fill pycnometer
W2 = Mass of displacement liquid to fill pycnometer
W3 = Mass of test item added to pycnometer
W4 = Mass of displacement liquid required to fill pycnometer containing W3g of test item
W5 = Mass of displacement liquid equivalent to W3g of test item
ptl= density of displacement liquid at temperature of determination (g/mL)
Dt4= relative density of test item at test temperature compared to water at 4°C
Description of key information
The relative density of the test item was determined to be 1.01 at 20 °C.
Key value for chemical safety assessment
- Relative density at 20C:
- 1.03
Additional information
The relative density of the test item was determined in a study following OECD 109 and EC Method A.3 guidelines, using the pycnometer method (Dunning 2018).
The study is a GLP compliant, guideline experimental study and is fully acceptable for assessment of this endpoint.
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