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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:
13-Mar-2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
GLP compliance:
yes (incl. certificate)
Remarks:
Ministero della Salute, D.G. Della Prevenzione Sanitaria Officio IV, Milan, Italy.
Type of method:
ring method
Remarks:
Du Noüy’s ring method and plate method
Surface tension:
< 60 mN/m
Temp.:
20 °C
Conc.:
9.06 mg/L

Results

The instrument K11 was calibrated before the measurement. The test results are reported in Table 1.

In Table 2 are reported the test results of the determination of surface tension performed on ultra-pure water (Fresenius Kabi.; lot:19KM21GA).

The test item shows a surface tension lower than 60 mN/m. So the test item can be considered as a surface-active material according to EC Method A.5.

 

Table 1

[TRADE NAME]:Surface Tension at (20 °C ± 0.5 °C),mN/m

TEST

 

TIME

s

SURFACE TENSION

mN/m

MEAN VALUE

mN/m

STANDARD DEVIATION

mN/m

1

52.4

51.9

51.8

0.3

2

87.5

52.4

3

127.5

52.0

4

166.9

52.0

5

206.3

52.0

6

245.6

51.8

7

284.5

51.7

8

324.6

51.7

9

363.0

51.5

10

403.3

51.4

 

Table 2

Water: Surface Tension at (20 °C ± 0.5 °C),mN/m

TEST

 

TIME

s

SURFACE TENSION

mN/m

MEAN VALUE

mN/m

STANDARD DEVIATION

mN/m

1

56.7

71.8

72.5

0.3

2

93.2

72.4

3

133.8

72.6

4

173.8

72.5

5

214.1

72.5

6

252.5

72.6

7

291.9

72.6

8

332,1

72.7

9

372.4

72.5

10

413.1

72.5

Description of key information

< 60 mn/M at 20°C ( Du Noüy’s ring method and plate method, OECD 115).

Key value for chemical safety assessment

Additional information

The substance can be considered as surface active.