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Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1991
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
other: 84/449/EWG, A.5; (Ringmethode)
GLP compliance:
yes
Type of method:
other: not specified in the test report
Surface tension:
71.7 mN/m
Temp.:
20 °C
Conc.:
0.05 mg/L
Remarks on result:
other: saturated aqeous solution
Surface tension:
35.1 mN/m
Temp.:
20 °C
Conc.:
100 vol%
Remarks on result:
other: pure substance

Due to the very low water solubility of the substance no significant lowering of the surface tension has been expected. Thus, also the surface tension of the pure substance has been determined.

Conclusions:
The surface tension of the saturated aqueous solution of the test item is 71.7 mN/m and 35.1 mN/m of the pure substance (each value measured at 20 °C).
Executive summary:

The surface tension of the saturated aqueous solution of the test item is 71.7 mN/m and 35.1 mN/m of the pure substance (each value measured at 20 °C).

Description of key information

Not surface active (surface tension of saturated aqueous solution: 71.7 mN/m at 20°C

Key value for chemical safety assessment

Surface tension:
71.7
in mN/m at 20°C and concentration in mg/L:
0.05

Additional information

The surface tension of the saturated aqueous solution (water solubility < 0.05 mg/L) of the test item was determined according to the ring method (EU-method A5; GLP; RL1; Hüls, 1991) to be 71.7 mN/m at 20°C, i.e not significantly different from pure water. It is therefore not surface active. The surface tension of the pure substance according to the ring method amounted to 35.1 mN/m at 20 °C.