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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:
07 March 2018 to 28 March 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)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes
Type of method:
OECD harmonised ring method
Key result
Surface tension:
52.8 mN/m
Temp.:
20 °C
Conc.:
896 mg/L
Remarks on result:
other: concentration based on 199.2 mg test item stirred with 199 mL double distilled water for 24 hours and subsequently diluted to give 90 % test item saturation solubility in water

RESULTS

-The results of the test on the determination of the surface tension of the test solution are given inTable 5(below).

TABLE 5 – SURFACE TENSION OF THE TEST ITEM

Measurement

Time passed after transfer test solution to test vessel (minutes)

Individual surface tension (mN/m)

1

15

53.6

2

16

53.3

3

17

53.4

4

18

53.8

5

19

53.6

Mean surface tension = 53.5 mN/m

Mean multiplied by Φb and Harkins-Jordan corrected value = 52.8 mN/m

Conclusions:
The surface tension of a test solution at 90% of the test item saturation solubility in water and at 20°C was 52.8 mN/m. According to this, the test item is considered to be surface active.
Executive summary:

GUIDELINE

The investigation was conducted in accordance with OECD Guideline 115 Surface Tension of Aqueous Solutions (July 27, 1995) and EC Guideline A.5 Surface Tension (March 04, 2016).The OECD harmonized ring method was applied for the determination of test item surface tension.

 

RESULTS

The surface tension of a test solution at 90% of the test item saturation solubility in water and at 20°C was 52.8 mN/m. According to this, the test item is considered to be surface active.

Description of key information

The surface tension of a test solution at 90% of the test item saturation solubility in water and at 20 °C was 52.8 mN/m. According to this, the test item is considered to be surface active OECD 115 and EU Method A.5).

Key value for chemical safety assessment

Surface tension:
52.8
in mN/m at 20°C and concentration in mg/L:
896

Additional information

GUIDELINE

The investigation was conducted in accordance with OECD Guideline 115 Surface Tension of Aqueous Solutions (July 27, 1995) and EC Guideline A.5 Surface Tension (March 04, 2016).The OECD harmonized ring method was applied for the determination of test item surface tension.

 

RESULTS

The surface tension of a test solution at 90 % of the test item saturation solubility in water and at 20 °C was 52.8 mN/m. According to this, the test item is considered to be surface active.