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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:
2016-05-18
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:
27 July 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes
Type of method:
OECD harmonised ring method
Key result
Surface tension:
45.9 mN/m
Temp.:
20 °C
Conc.:
1.001 g/L

The mean surface tension (n=5) was 45.9 mN/m (standard deviation = 0.06).

The test substance is considered as surface active, as its surface tension is < 60 mN/m.

Φ was calculated as 1.030 (from the 4 water tensiometer readings (mN/m): 70.5, 70.7, 70.6, 70.6).

 time point [min]  tensiometer reading (mN/m)  experimental value EV (mN/m)  surface tension (mN/m)
 4:20 46.1 47.5 46 .0
 4:40 46.0 47.4 45.9
 5:00 46.1 47.5 46.0
 5:20 46.0 47.4 45.9
 5:40 46.0 47.4 45.9
Conclusions:
The mean surface tension of the test item was determined to be 45.9 mN/m (standard deviation 0.06).
Executive summary:

The surface tension of the substance was determined in an experimental study under GLP conditions according to OECD Test Guideline 115 using the harmonised OECD ring method. The mean surface tension was 45.9 mN/m (standard deviation 0.06). The test substance is considered as surface active, as its surface tension is < 60 mN/m.

Description of key information

The mean surface tension of the test item was determined to be 45.9 mN/m (standard deviation 0.06) (reference 4.10 -1).

Key value for chemical safety assessment

Surface tension:
45.9
in mN/m at 20°C and concentration in mg/L:
1 001

Additional information

The surface tension of the substance was determined in an experimental study under GLP conditions according to OECD Test Guideline 115 using the harmonised OECD ring method. The mean surface tension was 45.9 mN/m (standard deviation 0.06). The test substance is considered as surface active, as its surface tension is < 60 mN/m.