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EC number: 601-472-6 | CAS number: 117314-20-2
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 24.5.-11.9.2014
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- A gas comparison pycnometer method designed to be compatible with Method A3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012 was used for the determination of the density. The study is GLP compliant.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- yes
- Remarks:
- The density was determined at 22.4 C.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Deviations:
- yes
- Remarks:
- The density was determined at 22.4 C.
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Certificate is included in the study report.
- Type of method:
- pycnometer method
- Key result
- Type:
- relative density
- Density:
- ca. 2.832
- Temp.:
- 22.4 °C
- Remarks on result:
- other: T = 22.4 ± 0.5 °C.
- Conclusions:
- Even though the test temperature deviated from the one determined in Method A3 (440/2008/EC), the effect on the final results can be neglected (see overall remarks). With the exception of the test temperature, the method was followed and the density of the test item was determined to be 2.83 x 10^3 kg/m^3 at 22.4 ± 0.5 °C and to have a relative density of 2.83.
- Executive summary:
The density of the test substance was determined to be 2.83 x 10^3 kg/m^3 at 22.4 ± 0.5 °C (relative density of 2.83), 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 and Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012.
- Endpoint:
- relative density
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 24.5.-11.9.2014
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- A gas comparison pycnometer method designed to be compatible with Method A3 Relative Density of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012 was used for the determination of the density. The study is GLP compliant.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Deviations:
- yes
- Remarks:
- The density was determined at 22.3 Celsius.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Deviations:
- yes
- Remarks:
- The density was determined at 22.3 Celsius.
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Certificate is included in the study report.
- Type of method:
- pycnometer method
- Key result
- Type:
- relative density
- Density:
- ca. 2.97
- Temp.:
- 22.3 °C
- Remarks on result:
- other: T = 22.3 ± 0.5 °C.
- Conclusions:
- Even though the test temperature deviated from the one determined in Method A3 (440/2008/EC), the effect on the final results can be neglected (see overall remarks). With the exception of the test temperature, the method was followed and the density of the test item was determined to be 2.97 x 10^3 kg/m^3 at 22.3 ± 0.5 °C and to have a relative density of 2.97.
- Executive summary:
The density of the test substance was determined to be 2.97 x 10^3 kg/m^3 at 22.3 ± 0.5 °C (relative density of 2.97), 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 and Method 109 of the OECD Guidelines for Testing of Chemicals, 02 October 2012.
Referenceopen allclose all
The pressure was determined from two samples (triplicate readings). Duplicate determinations were performed to ensure a reproducibility of less than ± 20 kg/m^3, which was obtained.
| Determination | Test | P1(sample) (psig) | P2(sample) (psig) | Volume (cm^3) | Density (kg/m^3) | Mean Density (kg/m^3) |
| 1 | A | 17.275 | 7.229 | 22.905 | 2.849 x 10 ^ 3 | 2.840 x 10^3 |
| B | 17.299 | 7.242 | 22.994 | 2.838 x 10 ^ 3 | ||
| C | 17.477 | 7.318 | 23.037 | 2.833 x 10 ^ 3 | ||
| 2 | A | 17.052 | 7.078 | 21.137 | 830 x 10 ^ 3 | 2.824 x 10^3 |
| B | 17.234 | 7.156 | 21.212 | 2.820 x 10 ^ 3 | ||
| C | 17.118 | 7.107 | 21.186 | 2.823 x 10 ^ 3 |
P1(sample), P2(sample) = Pressure readings with the sample cell containing test item (psig)
Mean density : 2.832 x 10^3 kg/m3
Relative density : 2.832
Temperature : 22.4 ± 0.5 °C
The pressure was determined from two samples (triplicate readings). Duplicate determinations were performed to ensure that the reproducibility was within acceptable limits (± 20 kg/m^3).
| Determination | Test | P1(sample) (psig) | P2(sample) (psig) | Volume (cm^3) | Density (kg/m^3) | Mean Density (kg/m^3) |
| 1 | A | 17.373 | 7.149 | 19.233 | 2.992 x 10 ^ 3 | 2.98 x 10^3 |
| B | 17.233 | 7.095 | 19.345 | 2.974 x 10 ^ 3 | ||
| C | 17.927 | 7.381 | 19.353 | 2.973 x 10 ^ 3 | ||
| 2 | A | 18.140 | 7.533 | 21.235 | 2.963 x 10 ^ 3 | 2.96 x 10^3 |
| B | 17.175 | 7.134 | 21.288 | 2.956 x 10 ^ 3 | ||
| C | 17.332 | 7.199 | 21.282 | 2.957 x 10 ^ 3 |
P1(sample), P2(sample) = Pressure readings with the sample cell containing test item (psig)
Mean density : 2.97 x 10^3 kg/m3
Relative density : 2.97
Temperature : 22.3 ± 0.5 °C
Description of key information
Gas comparison pycnometer: relative density 2.83 - 2.97 (OECD 109, EU Method A3 with slight deviations, GLP)
Key value for chemical safety assessment
- Relative density at 20C:
- 2.83
Additional information
Even though the test temperature deviated from the one determined in Method A3 (440/2008/EC), the effect on the final results can be neglected in the case of a solid substance. With the exception of the test temperature, the method was followed and the density of the sodium form test item was determined to be 2.83 x 10^3 kg/m^3 at 22.4 ± 0.5 °C and to have a relative density of 2.83. The density of the sodium/hydrogen form was determined to be 2.97 x 10^3 kg/m^3 at 22.3 ± 0.5 °C and to have a relative density of 2.97.
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