Registration Dossier
Registration Dossier
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EC number: 236-655-6 | CAS number: 13455-36-2
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 25 March 2022 to 9 June 2022
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Reference
- Endpoint:
- appearance / physical state / colour
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 25 March 2022 to 9 June 2022
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study is acceptable for assessment
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- no guideline required
- Principles of method if other than guideline:
- visual inspection
- GLP compliance:
- no
- Physical state at 20°C and 1013 hPa:
- solid
- Key result
- Form:
- solid: particulate/powder
- Colour:
- purple
- Substance type:
- inorganic
- Conclusions:
- The test item is a purple powder.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 022
- Report date:
- 2022
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- version 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- version 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
Test material
- Reference substance name:
- Tricobalt bis(orthophosphate)
- EC Number:
- 236-655-6
- EC Name:
- Tricobalt bis(orthophosphate)
- Cas Number:
- 13455-36-2
- Molecular formula:
- Co3(PO4)2
- IUPAC Name:
- tricobalt bis(orthophosphate)
- Reference substance name:
- Dicobalt diphosphate
- EC Number:
- 238-689-7
- EC Name:
- Dicobalt diphosphate
- Cas Number:
- 14640-56-3
- Molecular formula:
- Co2P2O7
- IUPAC Name:
- dicobalt diphosphate
- Reference substance name:
- cobalt phosphate octahydrate
- Cas Number:
- 10294-50-5
- Molecular formula:
- Co3(PO4)2.8H2O
- IUPAC Name:
- cobalt phosphate octahydrate
- Test material form:
- solid: particulate/powder
Constituent 1
impurity 1
impurity 2
Results and discussion
Surface tension
- Key result
- Surface tension:
- 71.9 mN/m
- Temp.:
- 20.2 °C
- Conc.:
- 17.4 mg/L
Any other information on results incl. tables
Verification with distilled water:
| Temperature (°C) | 20.1 |
| Time | Surface tension (mN/m) |
| After 19 s | 71.48 |
| After 80 s | 71.50 |
| After 141 s | 71.49 |
| Mean result | 71.5 |
Measurements on the test item diluted at 17.4 mg/L in distilled water:
| Assay N° | 1 | Assay N° | 2 | Assay N° | 3 |
Temperature (°C) |
20.1 | Temperature (°C) | 20.2 | Temperature (°C) | 20.2 |
| Time | Surface tension (mN/m) | Time | Surface tension (mN/m) | Time | Surface tension (mN/m) |
| After 22 s | 72.15 | After 21 s | 71.81 | After 20 s | 71.61 |
| After 83 s | 72.17 | After 82 s | 71.84 | After 81 s | 71.64 |
| After 145 s | 72.16 | After 1424s | 71.85 | After 143 s | 71.63 |
| Mean result | 72.2 | Mean result | 71.8 | Mean result | 71.6 |
Applicant's summary and conclusion
- Conclusions:
- The mean surface tension of the test item at 17.4 mg/L in distilled water at 20.2 °C was 71.9 mN/m ± 0.3 mN/m. The test item was not considered as surface-active in the experimental conditions used.
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