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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:
17 Jan - 18 Jan 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
adopted in 2008
Deviations:
no
GLP compliance:
no
Type of method:
ring method
Specific details on test material used for the study:
Storage conditions: Ambient temperature (10 to 30 °C), dry
Surface tension:
72.1 mN/m
Temp.:
20 °C
Remarks on result:
other: The surface tension of the test item was > 60 mN/m. The test item is not surface active.

Results
Table 1 – Surface tension results

Measurement

1

2

3

4

5

6

Time [s]

33

94

155

215

275

335

σ[mN/m] uncorrected

77.62

77.61

77.62

77.63

77.62

77.62

σ[mN/m] corrected according to Zuidema and Waters1

72.11

72.10

72.11

72.13

72.12

72.11

1Zuidema, H., Waters, C.W., Ind. Eng. Chem. Analyt. 13 (1941), p312

The aqueous solution of the test item had a mean surface tension of 72.1 mN/m. This is > 60 mN/m, therefore the test item has no surface active properties.

Description of key information

72.1 mN/m at 20 °C and 1 g/L (OECD 115, tensiometric method)

Key value for chemical safety assessment

Surface tension:
72.1
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

Not surface active.