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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:
18 Jan-28 Jun 1991
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Also according to GLP
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
1984
GLP compliance:
yes
Type of method:
ring method
Surface tension:
71 mN/m
Temp.:
24 °C
Conc.:
90 other: % saturated solution

Calibration factor: 1.0143

Surface tension readings for distilled water at 24 °C:

Time (minutes)

Measured surface tension (mN/m)

 

Before test solution measurement

After test solution measurement

0

70.4

72.0

2

70.4

72.0

4

70.2

72.0

6

70.2

 

8

70.2

 

Mean of last three readings

70.2

72.0

Overall mean

71.1

Surface tension readings of test solution at 24 °C:

Time (minutes)

Measured surface tension (mN/m)

0

72.2

2

72.3

4

71.6

6

71.0

8

70.9

10

70.2

12

70.5

14

70.2

16

70.2

18

70.0

20

70.0

22

70.0

Mean of last three readings

70.0

Conclusions:
The surface tension of the test item is 71 mN/m at 24 °C for a 90% saturated solution.
Executive summary:

The surface tension of the test item was determined according to the EC A.5 method in compliance with GLP. Using the ring method, the test material was found to have a surface tension of 71 mN/m at 24 °C (90% saturated solution).

Description of key information

71 mN/m at 24 °C, 90% saturated solution

Key value for chemical safety assessment

Surface tension:
71

Additional information

The surface tension of the substance was determined according to EEC Method A.5 (1984). The OECD harmonised ring method was applied. The substance is not surface active.

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