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EC number: 430-960-1 | 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:
- 26th February - 14th 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)
- 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:
- 1.22 other: unitless
- Temp.:
- 20 °C
- Conclusions:
- The relative density of the test item was determined to be 1.22 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 1.22 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 | 24.00736 | 25.01725 |
| w2 | 48.99097 | 49.73355 |
| w3 | 44.27428 | 45.06074 |
| w4 | 27.02747 |
28.02928 |
w5 |
45.28788 |
46.08025 |
W1 |
24.98361 |
24.71630 |
W2 |
20.26692 |
20.04349 |
W3 |
3.02011 |
3.01203 |
W4 |
18.26041 |
18.05097 |
W5 |
2.00651 |
1.99252 |
|
|
|
ptl |
0.809586211 |
0.809320287 |
Mean ptl |
0.80945 |
|
Vs |
2.479 |
2.462 |
Dt4 |
1.218 |
1.224 |
Mean Dt4 |
1.22 |
|
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 1.22 - 1.25 at 20 °C.
Key value for chemical safety assessment
- Relative density at 20C:
- 1.22
Additional information
The relative density of the test item was determined in two studies following OECD 109 and EC Method A.3 guidelines, using the pycnometer method (Dunning 2018a; Dunning 2018b).
The study is a GLP compliant, guideline experimental study and is fully acceptable for assessment of this endpoint.
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