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EC number: 618-079-0 | CAS number: 87848-95-1
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Experimental start date 14 September 2018, Experimental completion date 09 November 2018
- 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 guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
Test material
- Reference substance name:
- 2-bromo-6-(4-methylbenzoyl)pyridine
- EC Number:
- 618-079-0
- Cas Number:
- 87848-95-1
- Molecular formula:
- C13H10BrNO
- IUPAC Name:
- 2-bromo-6-(4-methylbenzoyl)pyridine
1
Results and discussion
Surface tension
- Key result
- Surface tension:
- 72.5 mN/m
- Temp.:
- 20 °C
- Conc.:
- 5.5 mg/L
Any other information on results incl. tables
Test temperature: 20°C
Solution concentration: 90% saturated (approximately 5.5 mg/L, based on the measured water solubility value of 6.1 mg/L (Section 4.5)
Solution age: Prepared immediately before measurement
Initial values were obtained as soon as possible after transfer to the measurement vessel.
| Time (minutes) | Surface tension (mN/m) | |||
| Measured | Calibration corrected | |||
| A | B | A | B | |
| 0 | 73.5 | 73.5 | 73.0 | 73.0 |
| 5 | 73.5 | 73.5 | 73.0 | 73.0 |
| 10 | 73.5 | 73.5 | 73.0 | 73.0 |
| 15 | 73.5 | 73.5 | 73.0 | 73.0 |
| 20 | 73.5 | 73.5 | 73.0 | 73.0 |
| 25 | 73.5 | 73.5 | 73.0 | 73.0 |
| 30 | 73.5 | 73.5 | 73.0 | 73.0 |
Overall mean calibration corrected surface tension = 73.0 mN/m
Harkins-Jordan* corrected value = 72.5 mN/m
*HARKINS, W.D. and JORDAN, H.F., J. Amer. Chem. Soc. 52, 1751 (1930).
Applicant's summary and conclusion
- Conclusions:
- The surface tension of a 90% saturated aqueous solution of 2-Bromo-6-(4-toluoyl)pyridine was found to be 72.5 mN/m. As the result was greater than 60 mN/m, the test item was not considered to be surface active.
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