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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:
12.06.2012-16.08.2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
GLP compliance:
no
Type of method:
OECD harmonised ring method
Key result
Surface tension:
> 53.6 - <= 56.2 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Determination 1

Determination 2

Calibration factor (Φ a)

1.081

Application rate

0.10 g / 100 ml (deionized water)

Time between preparation and measurement of the solution [min]

90

Measurement temperature [ºC]

20

Time between individual measurements [s]

30

Measured values [mN/m]

53.5 / 54.2 / 54.5 / 55.0 / 54.5 / 54.5

≡ 54.4

56.1 / 56.0 / 56.1 / 56/2 / 56.2 / 56.2

≡ 56.1

Values x calibration factor (Φ a) [mN/m]

58.8

60.6

Precise values after interpolation according to Harkins and Jordan [mN/m]

54.0

55.8

≡ 54.9 ± 1.3

Conclusions:
The surface tension at 20ºC is 54.9 ± 1.3

Description of key information

The surface tension at 20ºC is 54.9 ± 1.3

Key value for chemical safety assessment

Surface tension:
54.9
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information