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Surface tension

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Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18 to 19 September 2002
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study performed in accordance with OECD & EU test guidelines in compliance with GLP.
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
not specified
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
not specified
GLP compliance:
yes
Type of method:
ring method
Key result
Surface tension:
72.6 mN/m
Temp.:
20 °C
Conc.:
90 vol%

Surface tension of an aqueous solution of Hatcol 3331

Time passed between preparation and the first measurement: 16 minutes

Determination

Time expired1[min]

Surface tension2[mN/m]

Measured

Mean not corrected

Mean corrected for calibration

Mean corrected using Harkins & Jordan, 1930

1

16

62.1

 

 

 

2

17

64.5

 

 

 

3

18

67.1

 

 

 

4

19

68.1

 

 

 

5

20

68.5

 

 

 

6

21

69.2

 

 

 

7

22

69.3

 

 

 

8

23

69.2

69.3

72.6

72.6

9

24

69.4

 

 

 

10

25

69.5

 

 

 

1Time passed since the solution was transferred to the measurement vessel.

2Because the surface tension of a test solution in the measurement vessel alters over a period of time, several measurements were performed until a state of equilibrium was reached.

Conclusions:
The surface tension of a 90% saturated solution of Hatcol 3331 in water is 72.6 mN/m.
Executive summary:

The determination of the surface tension of an aqueous solution of HATCOL 3331 was based on EEC-Directive 92/69 EEC, A.5 "Surface tension" (1992) and OECD guideline no. 115: "Surface tension of aqueous solutions", July 27, 1995.

The surface tension of an aqueous solution of Hatcol 3331 at a 90% saturated concentration was 72.6 mN/m. Temperature of measurement was 20.0 ± 0.5°C.

Based on the criteria as outlined in the guideline, it is concluded that Hatcol 3331 should not be regarded as a surface active material.

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18 to 19 September 2002
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study performed in accordance with OECD & EU test guidelines in compliance with GLP.
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
not specified
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
not specified
GLP compliance:
yes
Type of method:
ring method
Key result
Surface tension:
55.5 mN/m
Temp.:
20 °C
Conc.:
90 vol%

Surface tension of an aqueous solution of Hatcol 3344.

Time passed between preparation and the first measurement: 16 minutes

Determination

Time expired1[min]

Surface tension [mN/m]

Measured

Mean not corrected

Mean corrected for calibration

Mean corrected using Harkins & Jordan, 1930

1

16

54.1

54.0

56.6

55.5

2

17

54.0

3

18

54.1

4

19

54.0

5

20

54.0

1Time passed since the solution was transferred to the measurement vessel.

Conclusions:
The surface tension of a 90% saturated solution of Hatcol 3344 in water is 55.5 mN/m.
Executive summary:

The determination of the surface tension of an aqueous solution of HATCOL 3344 was based on EEC-Directive 92/69 EEC, A.S "Surface tension" (1992) and OECD guideline no. 115: "Surface tension of aqueous solutions", July 27, 1995.

The surface tension of an aqueous solution of Hatcol 3344 at a 90% saturated concentration was 55.5 mN/m. Temperature of measurement was 20.0 ± 0.5°C.

Based on the criteria as outlined in the guideline, it is concluded that Hateol 3344 should be regarded as a surface active material.

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18 to 19 September 2002
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study performed in accordance with OECD & EU test guidelines in compliance with GLP.
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
not specified
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
not specified
GLP compliance:
yes
Type of method:
ring method
Key result
Surface tension:
53.6 mN/m
Temp.:
20 °C
Conc.:
90 vol%

 

Experimental value [mN/m]

Corrected value (water calibration) [mN/m]

Experimental value [mN/m]

Corrected value (water calibration) [mN/m]

20

18.1

50

48.6

22

20.1

52

50.7

24

22.1

54

52.8

26

24.1

56

54.9

28

26.1

58

57.0

30

28.1

60

59.1

32

30.1

62

61.3

34

32.1

64

63.4

36

34.1

66

65.5

38

36.1

68

67.7

40

38.2

70

69.9

42

40.3

72

72.0

44

42.3

74

-

46

44.4

76

-

48

46.5

78

-

 

Conclusions:
In conclusion, the surface tension of a 90% saturated solution of Hatcol 5236 in water is 53.6 mN/m.
Executive summary:

The determination of the surface tension of an aqueous solution of HATCOL 5236 was based on EEC-Directive 92169 EEC, A.5 "Surface tension" (1992) and OECD guideline no. 115: "Surface tension of aqueous solutions", July 27, 1995.

The surface tension of an aqueous solution of Hatcol 5236 at a 90% saturated concentration was 53.6 mN/m. Temperature of measurement was 20.0 ± 0.5°C.

Based on the criteria as outlined in the guideline, it is concluded that Hatcol 5236 should be regarded as a surface active material.

Description of key information

Key value determined using OECD guideline 115 and EU test standard A5.

Key value for chemical safety assessment

Surface tension:
72.6
in mN/m at 20°C and concentration in mg/L:
90

Additional information

HATCOL 3331

The surface tension of an aqueous solution of Hatcol 3331 at a 90% saturated concentration was 72.6 mN/m. Temperature of measurement was 20.0 ± 0.5°C.

Based on the criteria as outlined in the guideline, it is concluded that Hatcol 3331 should not be regarded as a surface active material.

 

HATCOL 3344

The surface tension of an aqueous solution of Hatcol 3344 at a 90% saturated concentration was 55.5 mN/m. Temperature of measurement was 20.0 ± 0.5°C.

 

HATCOL 5236

The surface tension of an aqueous solution of Hatcol 5236 at a 90% saturated concentration was 53.6 mN/m. Temperature of measurement was 20.0 ± 0.5°C.