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EC number: 248-387-7 | CAS number: 27287-73-6
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 01 September 2015 - 27 October 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- No formal claim. Study conducted in a facility operating to GLP.
- Type of method:
- ring method
- Key result
- Surface tension:
- 72.7 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- In a reliable and conclusive study according to OECD TG 115 (1995) and EU Method A5 (2008), the average surface tension of duplicate solutions of the test item in water has been determined to be 72.7 mN/m at 20.0 ± 0.5 °C.
- Executive summary:
The determination of the surface tension of an aqueous solution of the test item was based on the OECD Guideline No. 115 "Surface Tension of Aqueous Solutions" (1995). The surface tension of test item in water was determined according to the ring method to be 72.7 mN/m at 20.0 ± 0.5 °C.
Reference
Table 3 Water Calibration Data relevant To Sample Solution A
| Reading (mN/m) | Temperature (ºC) | Literature Value (mN/m) | Calibration Factor |
| 73.0 | 20.0 | 72.72 | 0.996 |
| 73.0 | 20.0 | 72.72 | 0.996 |
| 73.0 | 20.0 | 72.72 | 0.996 |
| 73.0 | 20.0 | 72.72 | 0.996 |
| 73.0 | 20.0 | 72.72 | 0.996 |
| 73.0 | 20.0 | 72.72 | 0.996 |
| 73.0 | 20.0 | 72.72 | 0.996 |
| Mean Calibration Factor: | 0.996 (1) |
(1) Calculated using the last six calibration factor values which bracket the sample solution reading values used in the definitive test result.
Table 4 Water Calibration Data relevant To Sample Solution B
| Reading (mN/m) | Temperature (ºC) | Literature Value (mN/m) | Calibration Factor |
| 72.5 | 20.0 | 72.72 | 1.003 |
| 73.0 | 20.0 | 72.72 | 0.996 |
| 73.0 | 20.0 | 72.72 | 0.996 |
| 73.0 | 20.0 | 72.72 | 0.996 |
| 73.0 | 20.0 | 72.72 | 0.996 |
| 73.0 | 20.0 | 72.72 | 0.996 |
| 73.0 | 20.0 | 72.72 | 0.996 |
| Mean Calibration Factor: | 0.996 (1) |
(1) Calculated using the last six calibration factor values which bracket the sample solution reading values used in the definitive test result.
Table 5 Sample Solution A Surface Tension Measurements
| Time (mins) | Temperature (°C) | Reading (mN/m) |
| 69 | 20.0 | 72.5 |
| 93 | 20.0 | 73.0 |
| 117 | 20.0 | 73.0 |
| 142 | 20.0 | 73.0 |
| 165 | 20.0 | 73.0 |
| 189 | 20.0 | 73.0 |
| Mean Sampling Reading: | 73.0 (1) |
(1) Last five values considered to be a stable plateau of surface tension readings and therefore used in the calculation of the mean.
Table 6 Sample Solution B Surface Tension Measurements
| Time (mins) | Temperature (°C) | Reading (mN/m) |
| 81 | 20.0 | 72.5 |
| 105 | 20.0 | 73.0 |
| 130 | 20.0 | 73.0 |
| 154 | 20.0 | 73.0 |
| 177 | 20.0 | 73.0 |
| 201 | 20.0 | 73.0 |
| Mean Sampling Reading: | 73.0 (1) |
(1) Last five values considered to be a stable plateau of surface tension readings and therefore used in the calculation of the mean.
Description of key information
The determination of the surface tension of an aqueous solution of the test substance was based on the OECD Guideline No. 115 "Surface Tension of Aqueous Solutions" (1995). The surface tension of test substance in water was determined according to the ring method to be 72.7 mN/m at 20.0 ± 0.5 °C.
Key value for chemical safety assessment
- Surface tension:
- 72.7
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
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