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Diss Factsheets

Physical & Chemical properties

Surface tension

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Link to relevant study record(s)

Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18 September 2012 - 17 December 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
(2008)
Deviations:
no
Qualifier:
according to guideline
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:
73.3 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Table: Surface tension measurements

 

Measurement

Time passed [minutes]

Surface tension [mN/m]

Individual

mean

mean corrected (2)

 

 

 

 

 

1

31

71.3

71.9 (1)

73.3

2

32

71.8

 

 

3

33

72.3

 

 

4

34

71.9

 

 

5

35

71.9

 

 

6

36

71.8

 

 

7

37

71.9

 

  

8

38

72.1

 

  
 

(1) Mean from measurements 4 to 8.

(2) Multiplied by the calibration factor followed by correction according to Harkins-Jordan (W.D. Harkins, H.F. Jordan, J. Amer.Chem. Soc., vol 52, 1751, 1930).

Conclusions:
The surface tension of an aqueous test substance solution at 1 g/L was measured to be 73.3 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 at 20°C of an aqueous solution of the substance at 1 g/L was determined to be 73.3 mN/m. According to the EC A.5 guideline the substance is not surface active.

Description of key information

Surface tension: 73.3 mN/m at 20°C (EC A.5, OECD 115: OECD harmonised ring method). The substance was concluded to be not surface active.

Key value for chemical safety assessment

Surface tension:
73.3
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information