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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:
November 01, 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Comparable to guideline study (OECD109) with acceptable restrictions
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:
no
Type of method:
OECD harmonised ring method
Key result
Surface tension:
65 mN/m
Temp.:
20 °C
Conc.:
554.22 mg/L

The results of two measurements are summarized inTable 1.

Table 1: Measured surface tension values

Value No.

1stmeasurements

s[mN/m]

2ndmeasurement

s[mN/m]

1

64.71

65.21

2

64.71

65.22

3

64.70

65.21

4

64.69

65.20

5

64.69

65.20

6

64.69

65.20

Mean value of the

individual values

64.70

65.21

Total mean value

64.95

The test item has a mean surface tension of 65.0 mN/m. Therefore the test item is not to be regarded as surface active.

Conclusions:
The surface tension at 20 °C is 64.96 mN/m. The test item is not to be regarded as surface active.
Executive summary:

The surface tension at 20 °C of test item was determined by the ring method according to OECD Test Guideline 115 and EC No. 440/2008 Part A. Method A.5.

The surface tension at 20 °C is 64.96 mN/m.  The test item is not to be regarded as surface active.

Description of key information

The surface tension at 20 °C is 64.96 mN/m.  The test item is not to be regarded as surface active.

Key value for chemical safety assessment

Surface tension:
64.95
in mN/m at 20°C and concentration in mg/L:
554.22

Additional information