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EC number: 257-479-6 | CAS number: 51858-17-4
Density
Administrative data
- 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
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.3 (Relative Density)
- Version / remarks:
- 2008
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 109 (Density of Liquids and Solids)
- Version / remarks:
- 2012
- GLP compliance:
- not specified
- Type of method:
- air comparison pycnometer (for solids)
- Remarks:
- Gas comparison pycnometer
Test material
- Reference substance name:
- Dipotassium dihydrogen 4-[5-[3-carboxylato-5-hydroxy-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]penta-2,4-dienylidene]-4,5-dihydro-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate
- EC Number:
- 257-479-6
- EC Name:
- Dipotassium dihydrogen 4-[5-[3-carboxylato-5-hydroxy-1-(4-sulphonatophenyl)-1H-pyrazol-4-yl]penta-2,4-dienylidene]-4,5-dihydro-5-oxo-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate
- Cas Number:
- 51858-17-4
- Molecular formula:
- C25H16N4O12S2.2K
- IUPAC Name:
- dipotassium dihydrogen 4-{5-[3-carboxylato-5-oxo-1-(4-sulfonatophenyl)-1,5-dihydro-4H-pyrazol-4-ylidene]penta-1,3-dien-1-yl}-5-hydroxy-1-(4-sulfonatophenyl)-1H-pyrazole-3-carboxylate
- Test material form:
- solid: crystalline
Constituent 1
Results and discussion
Density
- Key result
- Type:
- relative density
- Density:
- 1.7 other: dimensionless
- Temp.:
- 20 °C
Any other information on results incl. tables
Two tests with different amounts of the test item were performed to determine the relative density D420 at a temperature of 20 °C ± 0.01 °C. Results are shown below:
Test No. |
Temperature [°C] |
Amount of test item [g] |
Average sample volume [cm3] |
Density [g/cm3]* |
1 |
20 |
6.41 |
3.76970 |
1.70040 |
2 |
20 |
6.52 |
3.83816 |
1.69873 |
* The pressurizing-expansion cycles are performed until 5 subsequent volume measurements have a relative standard deviation (RSD) of ≤ 0.2 %. |
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The mean density of the test item at 20 °C is 1.69956 g/cm3. The relative density is calculated by dividing the density of the test item by the density of water at 4 °C (0.9999750 g/cm3).
The relative density is D420 = 1.70.
Applicant's summary and conclusion
- Conclusions:
- The relative density of the test item Oxonole Blue at 20 °C ± 0.01 °C (compared to water at 4 °C) is 1.70.
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