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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 Mar 1998
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
27 July 1995
Qualifier:
according to
Guideline:
other: ISO 304 ("Surface active agents - Determination of Surface Tension by Drawing up Liquid Films")
GLP compliance:
yes
Type of method:
plate method
Key result
Surface tension:
71.7 mN/m
Temp.:
20 °C
Conc.:
1 g/L

RESULTS

Table: surface tension determinations of the test substance

Time

(min)

Solution

σcorr (Mn/m)

σcorr (Mn/m)

0

72.2

71.2

1

72.2

71.2

5

72.2

71.2

10

72.2

71.2

Average

72.2

71.2

Significance time dependence

no

no

The average of the two measurements is σcorr = 71.7 mN/m (Temperature: 20.0 ± 0.2 °C).

Conclusions:
The average surface tension of duplicate 1.0 g/L solutions of test item in water has been determined to be 71.7 mN/m at 20.0 ± 0.2 °C.
Executive summary:

The surface tension of the test item has been determined using the plate method in accordance with OECD TG 115 and in compliance with GLP. The average surface tension of two measurements of 1.0 g/L solutions of test item in water has been determined to be 71.7 mN/m at 20.0 ± 0.2 °C.

Description of key information

71.7 mN/m at 20 °C, OECD 115, plate method

Key value for chemical safety assessment

Surface tension:
71.7
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information