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Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
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)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
2008
Deviations:
no
GLP compliance:
no
Type of method:
OECD harmonised ring method
Key result
Surface tension:
56.19 mN/m
Temp.:
20.2 °C
Conc.:
1 g/L

Measurement No.

Time from transfer of test solution [min]

Duration of measurement [min]

Surface Tension [mN/m]

Temperature [°C]

3

36.1

0.7

56.57

20.3

4

36.9

1.5

56.31

20.3

5

37.7

2.2

56.31

20.2

6

38.4

3.0

56.24

20.2

7

39.2

3.8

56.20

20.2

8

39.9

4.5

56.20

20.2

9

40.7

5.2

56.18

20.2

10

41.5

6.0

56.18

20.2

11

42.2

6.8

56.17

20.2

12

43.0

7.5

56.15

20.2

Mean

-

-

56.19

20.2

SD

-

-

0.05

0.0

Conclusions:
The surface tension of the test item was determined to be 56.19 mN/m at 20 °C.
Executive summary:

The surface tension of the test item was determined in an experimental study according to Regulation (EC) No 440/2008 Method A.5. and OECD Test Guideline 115 using the harmonized OECD ring method. The surface tension was determined with a test item concentration of 1 g/L at 20 °C. The mean surface tension was 56.19 mN/m. Due to the fact that the surface tension is lower than 60 mN/m, the test item is regarded as being surface-active.

Description of key information

The surface tension of the test item was determined to be 56.19 mN/m at 20 °C.

Key value for chemical safety assessment

Surface tension:
56.19
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The surface tension of the test item was determined in an experimental study according to Regulation (EC) No 440/2008 Method A.5. and OECD Test Guideline 115 using the harmonized OECD ring method. The surface tension was determined with a test item concentration of 1 g/L at 20 °C. The mean surface tension was 56.19 mN/m. Due to the fact that the surface tension is lower than 60 mN/m, the test item is regarded as being surface-active.