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Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-08-03 to 2017-08-04
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)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
OECD harmonised ring method
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: Batch no. 41251
- Expiration date of the lot/batch: 2017-03-01 (taken from Label)

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: At room temperature
- Stability under test conditions: until 01 March 2017 (nominal expiry date) (taken from label)

FORM AS APPLIED IN THE TEST (if different from that of starting material): Colourless liquid
Key result
Surface tension:
ca. 73.2 mN/m
Temp.:
20 °C
Conc.:
90 vol%

The results of the test on the determination of the surface tension of the test solution are given inTable 1.

Table 1          
Surface Tension of the Test Item

Measurement

Time passed after transfer test solution to test vessel
[minutes]

Surface tension
(mN/m)

individual

mean

mean multiplied by
Φband Harkins-Jordan corrected value

1

17

63.4

71.11

73.2

2

18

63.4

 

 

3

19

64.0

 

 

4

20

64.4

 

 

5

21

65.3

 

 

6

22

65.6

 

 

7

23

68.0

 

 

8

24

71.1

 

 

9

25

70.9

 

 

10

26

70.9

 

 

11

27

71.1

 

 

12

28

71.4

 

 

1         Mean calculated from measurements 8 to 12, after equilibrium was reached.

Conclusions:
The surface tension of a test solution at 90% of the test item saturation solubility in water and at 20°C was 73.2 mN/m. According to this, the test item is considered not to be surface active.
Executive summary:

The surface tension of a test solution at 90% of the test item saturation solubility in water and at 20°C was 73.2 mN/m. According to this, the test item is considered not to be surface active.

Description of key information

The surface tension of a test solution at 90% of 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorohexane saturation solubility in water and at 20°C was 73.2 mN/m. According to this, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorohexane is considered not to be surface active.

Key value for chemical safety assessment

Surface tension:
73.2

Additional information

A GLP-compliant study, conducted according to OECD Guideline 115 (OECD harmonised ring method) was provided for 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorohexane (Charles River Laboratories Den Bosch BV., 2017a).