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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:
29 June, 2009 - 6 August, 2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The study has been performed according to OECD and/or EC guidelines, and according to GLP principles.
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
ring method
Surface tension:
47.4 mN/m
Temp.:
20 °C
Conc.:
1 g/L

The results of the test on the determination of the surface tension of the test solution are given in the table 8:

Table 8: Surface tension of the test substance

Measurement

Time passed (minutes)

Surface tension (mN/m)

individual

mean

Mean multiplied byΦband Harkins-Jordan corrected value

1

16

47.4

47.5

47.4

2

17

47.5

 

 

3

18

47.7

 

 

4

19

47.4

 

 

5

20

47.3

 

 

Conclusions:
The OECD harmonized ring method was used for the determination of the surface tension of 2-sec-butylphenol. The surface tension of a test solution at a concentration of 1 g/l at 20.0°C was 47.4 mN/m. According to this, the test substance is considered to be surface active.
Executive summary:

The surface tension of 2 -sec-butylphenol was determined by the ring method. The method followed the OECD Guideline 115 (Surface Tension of Aqueous Solutions) and EU Method A. 5 (Surface tension). Five measurements were performed until a constant value on the surface tension was reached (< 0.5 mN/m).

The surface tension of a test solution at a concentration of 1 g/l at 20.0°C was 47.4 mN/m. According to this, the test substance is considered to be surface active.

Description of key information

surface tension: 47.4 mN/m at 20.0°C at a concentration of 1 g/l

Key value for chemical safety assessment

Surface tension:
47.4
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The surface tension of 2 -sec-butylphenol was determined by the ring method. The method followed the OECD Guideline 115 (Surface Tension of Aqueous Solutions) and EU Method A. 5 (Surface tension).Five measurements were performed until a constant value on the surface tension was reached (< 0.5 mN/m).

The surface tension of a test solution at a concentration of 1 g/l at 20.0°C was 47.4 mN/m. According to this, the test substance is considered to be surface active.