Registration Dossier
Registration Dossier
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EC number: 849-166-3 | CAS number: 83841-00-3
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- 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)
- Version / remarks:
- 1995
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 70.3 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The average surface tension of the substance at a concentration of 1.0 g/L was determined to be 70.3 mN/m at 20.0 ± 0.5 °C.
- Executive summary:
The surface tension of a 1.0 g/L solution of the substance in water was studied under GLP in accordance with OECD TG 115, using a tensiometer and applying the ring method. Two test solutions were prepared by diluting an aliquot of test substance in high purity water and diluting to the proper concentration, that were used in the tests after 25 to 30 minutes. The surface tension was then determined with a tensiometer at a temperature of 20 °C, and determinations were repeated until a consistent value was obtained. The average surface tension determined for the two test solutions was 70.3 mN/m at 20 ± 0.5 °C.
Reference
Table 1: Measurements for sample solution A
Time (minutes) |
Temperature (°C) |
Surface tension reading (mN/m) |
90 |
20.0 |
69.0 |
94 |
20.0 |
69.5 |
99 |
20.0 |
70.5 |
105 |
20.0 |
70.5 |
110 |
20.0 |
70.5 |
118 |
20.0 |
70.5 |
130 |
20.0 |
70.5 |
|
Mean |
70.4 |
Table 2: Measurements for sample solution B
Time (minutes) |
Temperature (°C) |
Surface tension reading (mN/m) |
170 |
20.0 |
72.0 |
179 |
20.0 |
71.0 |
185 |
20.0 |
70.0 |
190 |
20.0 |
70.5 |
195 |
20.0 |
70.5 |
201 |
20.0 |
70.0 |
207 |
20.0 |
70.5 |
|
Mean |
70.3 |
Description of key information
Surface tension = 70.3 mN/m at 1.0 g/L and 20 ± 0.5 °C (GLP, OECD TG 115, ring method)
Key value for chemical safety assessment
- Surface tension:
- 70.3
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
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