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EC number: - | CAS number: -
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:
- 20 March 2017 to 01 August 2017
- 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:
- yes
- Remarks:
- samples prepared at higher concentration than planned with no impact on results or integrity of the study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- yes
- Remarks:
- samples prepared at higher concentration than planned with no impact on results or integrity of the study
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 72 mN/m
- Temp.:
- 19.5 °C
- Conc.:
- 4.95 g/L
- Remarks on result:
- other: samples prepared at a loading rate of 5.5 g/L and diluted to 90 %
- Conclusions:
- The surface tension of a 90 % saturated solution from a loading rate of 5.5 g/L has been determined to be 72.0 mN/m at 19.5 ± 0.5 °C. The test item was considered to be not surface-active.
- Executive summary:
GUIDELINE
The determination was carried out by the ring method, using a procedure designed to be compatible with Method A.5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for the Testing of Chemicals, 27 July 1995.
RESULTS
The surface tension of a 90 % saturated solution from a loading rate of 5.5 g/L has been determined to be 72.0 mN/m at 19.5 ± 0.5 °C. The test item was considered to be not surface-active.
Reference
TABLE 5 – READINGS, TIMES AND TEMPERATURES FOR SAMPLE 1
Age of solution (min) |
Reading (mN/m) |
Temperature (°C) |
90 |
72.0 |
19.6 |
99 |
72.0 |
19.6 |
108 |
72.0 |
19.6 |
117 |
72.0 |
19.6 |
126 |
72.0 |
19.6 |
TABLE 6 – READINGS, TIMES AND TEMPERATURES FOR SAMPLE 2
Age of solution (min) |
Reading (mN/m) |
Temperature (°C) |
136 |
72.0 |
19.6 |
145 |
72.0 |
19.6 |
202 |
72.0 |
19.4 |
211 |
72.0 |
19.4 |
220 |
72.0 |
19.4 |
Mean Sample 1 result: 72.0 mN/m (pH 7.1)
Mean Sample 2 result: 72.0 mN/m (pH 7.8)
Mean result: 72.0±0.5 mN/m
Overall temperature: 19.5 ± 0.5 °C
Description of key information
The surface tension of a 90 % saturated solution from a loading rate of 5.5 g/L has been determined to be 72.0 mN/m at 19.5 ± 0.5 °C. The test item was considered to be not surface-active (OECD 115 and EU Method A.5)
Key value for chemical safety assessment
- Surface tension:
- 72
- in mN/m at 20°C and concentration in mg/L:
- 4 950
Additional information
GUIDELINE
The determination was carried out by the ring method, using a procedure designed to be compatible with Method A.5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for the Testing of Chemicals, 27 July 1995.
RESULTS
The surface tension of a 90 % saturated solution from a loading rate of 5.5 g/L has been determined to be 72.0 mN/m at 19.5 ± 0.5 °C. The test item was considered to be not surface-active.
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