Registration Dossier

Physical & Chemical properties

Surface tension

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
August 17, 2011 - January 5, 2012
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)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
OECD harmonised ring method
Key result
Surface tension:
31.9 mN/m
Temp.:
20 °C
Conc.:
1 g/L
Remarks on result:
other: The substance is considered to be surface active.

- As the mean surface tension of double distilled water was determined to be 71.2 mN/m, the calibration factor was calculated to be 1.02.

Measurement

Time passed [minutes]

Surface tension [mN/m]

individual

mean

Mean multiplied by calibration factor and Harkins-Jordan corrected value

1

40

32.0

33.1 *

31.9

2

43

31.9

3

44

32.0

4

45

32.1

5

50

32.4

6

55

33.2

7

56

33.3

8

57

33.2

9

58

33.1

10

59

32.9

*Mean calculated from measurements 6 to 10, after equilibrium was reached.

Conclusions:
The OECD harmonized ring method was applied for the determination of the surface tension of the substance, in accordance with OECD 115, EU Method A. 5 and GLP. The surface tension of a test solution at a concentration of 1 g/L at 20°C was 31.9 mN/m. According to this, the substance is considered to be surface active.

Description of key information

The surface tension of a test solution at a concentration of 1 g/L at 20°C was 31.9 mN/m. According to this, the substance is considered to be surface active.

Key value for chemical safety assessment

Surface tension:
31.9
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The OECD harmonized ring method was applied for the determination of the surface tension of the substance, in accordance with OECD 115, EU Method A.5 and GLP.