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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:
03 Jul 2017 - 12 Jul 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
2008
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
1995
Deviations:
no
GLP compliance:
yes
Type of method:
OECD harmonised ring method
Key result
Surface tension:
65.4 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Table: Surface tension measurements

Measurement

Time passed after transfer test solution to test vessel
[minutes]

Surface tension
(mN/m)

individual

mean (1)

mean multiplied by
Φband Harkins-Jordan corrected value

1

20

64.8

65.2

65.4

2

21

65.0

 

 

3

22

65.1

 

 

4

23

65.3

 

 

5

24

65.4

 

 

6

25

65.1

 

 

(1)Mean calculated from measurements 2 to 6, after equilibrium was reached.

Conclusions:
The surface tension of an aqueous substance solution at 1 g/L was determined to be 65.4 mN/m (at 20°C).

Executive summary:

Using the OECD harmonized ring method in a GLP study according to EC A.5 and OECD 115, the surface tension of an aqueous substance solution at 1 g/L was determined to be 65.4 mN/m (at 20°C). According to the EC A.5 guideline the substance is not surface active.

Description of key information

The surface tension of an aqueous substance solution at 1 g/L was determined to be 65.4 mN/m (at 20°C). According to the EC A.5 guideline the substance is not surface active.

Key value for chemical safety assessment

Surface tension:
65.4
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

Determined using the OECD harmonized ring method in a GLP study according to EC A.5 and OECD 115.