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EC number: 232-088-3 | CAS number: 7785-84-4
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Testing was conducted on 18 March 2010
- 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
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Date of GLP inspection: 2009-09-15 Date of Signature on GLP certificate: 2009-11-26
- Type of method:
- air comparison pycnometer (for solids)
- Key result
- Type:
- relative density
- Density:
- 2.58
- Temp.:
- 21.5 °C
- Conclusions:
- The relative density of the test item has been determined to be 2.58 at 21.5 ± 0.5°C. This study is considered to be appropriate and reliable for use as a key study in accordance with Regulation (EC) No. 1907/2006 (REACH). No further testing is required.
- Executive summary:
The relative density has been determined to be 2.58 at 21.5 ± 0.5°C, using a gas comparison pycnoter, designed to be compatible with Method A3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008.
Reference
Results
Calibration
The pressure readings (P1and P2) and the calculated volume for the calibration ball are shown in the following table:
Determination |
P1 |
P2 |
Volume (cm3) |
Certified Volume (cm3) |
Tolerance (cm3) |
A |
17.457 |
6.827 |
1.052 |
1.073 |
± 0.05 |
B |
17.210 |
6.734 |
1.062 |
1.073 |
± 0.05 |
C |
17.250 |
6.749 |
1.061 |
1.073 |
± 0.05 |
D |
17.258 |
6.753 |
1.063 |
1.073 |
± 0.05 |
Sample
The pressure readings, calculated volumes and density values obtained for the test item are shown in the following table:
Determination |
P1 |
P2 |
Volume (cm3) |
Density (kg/m3) |
A |
17.430 |
6.762 |
0.899 |
2573.5 |
B |
17.489 |
6.800 |
0.932 |
2578.0 |
Temperature: 21.5 ± 0.5ºC
Mean density: 2575.8 kg/m3
Relative density: 2.58
Description of key information
One key study exists. This study (Wooley A, 2010) was conclusive, done to a valid guideline (EU Method A.3) and the study was conducted under GLP conditions. It is therefore scientifically justified for use as a key study under Regulation (EC) No. 1907/2006.
Key value for chemical safety assessment
- Relative density at 20C:
- 2.58
Additional information
The relative density of the test material has been determined to be 2.58 at 21.5°C, using a gas comparison pycnometer, designed to be compatible with Method A3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
