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Physical & Chemical properties

Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Standard method followed, no GLP lab.
Qualifier:
according to
Guideline:
other: Wilhelmy plate
Principles of method if other than guideline:
Wilhelmy plate method is used to measure the surface tension using a stndardized plate with a plate tensiometer. The plate is moved towards the surface until the meniscus connects with it. The surface tension is calculated from the resulting force. Due to uncertain wetting behaviour, the plate can only be used for interfaces under certain limitations.
GLP compliance:
no
Type of method:
plate method
Key result
Surface tension:
20.8 mN/m
Temp.:
25 °C
Conc.:
100 vol%
Conclusions:
Under the conditions of this study a surface tension of 20.8 mN/m at 25°C was determined for the test substance, Hydrocarbons, C7-C9, isoalkanes.
Executive summary:

Under the conditions of this study a surface tension of 20.8 mN/m at 25°C was determined for the test substance, Hydrocarbons, C7-C9, isoalkanes.

Description of key information

The surface tension of hydrocarbons, C7-C9, isoalkanes is between 18 and 22 mN/m at 25°C

Key value for chemical safety assessment

Additional information

Wilhelmy plate method is used to measure the surface tension using a standardized plate with a plate tensiometer. Using this method the surface tension is between 18 and 22 mN/m at 25°C.