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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)
GLP compliance:
yes (incl. QA statement)
Type of method:
plate method
Key result
Surface tension:
53 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Determination

Determination after

Surface tension at 20 °C

 

[min]

mean value
[mN/m]

1

10

53.9

2

36

52.9

3

63

53.0

4

89

53.0

End value

--

53.0
Conclusions:
A surface tension of 53 mN/m at 20 °C was determined for HPP 12879 -1.
Executive summary:

The surface tension according to OECD 115 of an aqueous solution (1 g/L) of HPP 12879 -1 at 20 °C was determined using a plate tensiometer. A commercially available tensiometer based on the plate method has been used to measure the force which is required to withdraw a horizontally suspended plate from the surface of the test solution. The surface tension was determined in a mixture of 0.9999 g test item in 1 L demineralized water (= approx. 1 g/L) at 20 °C. Since the test item was not completely soluble at 1 g/L the suspension was stirred for 24 hours and filtered through 0.45 μm Chromafil Xtra PET 45/25 filter. Clear solutions were obtained after filtration. A mixture of 72 mL filtrate and 8 mL deionized water was prepared and used for the measurement.

A surface tension of 53 mN/m was determined for HPP 12879 -1.

Description of key information

A surface tension of 53 mN/m at 20 °C was determined for HPP 12879 -1 according to OECD 115 using a plate tensiometer.

Key value for chemical safety assessment

Surface tension:
53
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information