Registration Dossier
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EC number: 204-611-5 | CAS number: 123-23-9
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2018-04
- 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:
- other: DIN 51913, Testing of carbon materials – Determination of density by gas pycnometer (volumetric) using helium as the measuring gas – Solid materials
- Version / remarks:
- May 2001
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- Test performed in accordance with Internal Management System.
- Type of method:
- air comparison pycnometer (for solids)
- Remarks:
- helium pycnometer
- Key result
- Type:
- relative density
- Density:
- 1.563 other: domensionless
- Temp.:
- 20 °C
- Remarks on result:
- other: SD: 0.0148
- Conclusions:
- The relative density of the test item was determined to be 1.5625 with a standard deviation of 0.0148.
- Executive summary:
The relative density of the test item was determined at 20 °C according to OECD 109, EU Method A.3 and DIN 51913. The relative density was determined using gas comparison pycnometer. As gas Helium type 5.0 was used. The determination was performed in triplicates with two replicates per measurement. The relative density of the test item was determined to be 1.5625 with a standard deviation of 0.0148.
Reference
Table 1. Control pycnometer
Control sample |
Standard volume (cm3) |
Measured volume (cm3) |
Deviation (cm3) |
Deviation (%) |
Temperature (ºC) |
Standard 135, before analysis |
6.3717 |
6.3713 |
-0.0004 |
-0.006 % |
20.4 |
Standard 135, after analysis |
6.3717 |
6.3710 |
-0.0007 |
-0.011 % |
20.6 |
The true density of the test item was determined in triplicate with 2 replicates per measurement.
Table 2. True density of the test item
Sample |
Sample weight (g) |
Volume (cm3) |
True density (g/cm3) |
Temperature (ºC) |
1504501023-1 |
0.7840 |
0.4964 0.5029 |
1.5795 1.5590 |
20.4 20.5 |
1504501023-2 |
0.8695 |
0.5658 0.5548 |
1.5368 1.5672 |
20.5 20.6 |
1504501023-3 |
2.5676 |
1.6466 1.6324 |
1.5593 1.5729 |
20.5 20.6 |
Table 3. Relative density of the test item
Sample / Relative Density |
Test item |
Average |
1.5625 |
St. Dev. |
0.0148 |
RSD (%) |
0.95% |
Description of key information
The relative density of the test item was determined to be 1.5625 with a standard deviation of 0.0148.
Key value for chemical safety assessment
- Relative density at 20C:
- 1.562
Additional information
The relative density of the test item was determined at 20 °C according to OECD 109, EU Method A.3 and DIN 51913. The relative density was determined using gas comparison pycnometer. As gas Helium type 5.0 was used. The determination was performed in triplicates with two replicates per measurement. The relative density of the test item was determined to be 1.5625 with a standard deviation of 0.0148.
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