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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:
from 1999-02-24 to 1999-10-06
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
92/69/EEC
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
ring method
Specific details on test material used for the study:
- Analytical purity: 92.6%
- Lot/batch No(s): N3447
- Storage condition of test material: room temperature
Key result
Surface tension:
65.4 mN/m
Temp.:
20 °C
Conc.:
90 vol%
Key result
Surface tension:
32.2 mN/m
Temp.:
20 °C
Remarks on result:
other: neat test substance tested

The measured surface tension of pure water at 20°C was determined to be 71.7 mN/m. The literature at this temperature is 72.75 mN/m, and therefore the calibration factor was determined to be 1.0146.

Table 1: Surface tension readings at 20 °C – 90% aqueous saturation

Time after preparation (min)

Surface tension (mN/m)

14

16

18

20

22

Mean

65.0

64.5

64.5

64.0

64.5

64.5

After application of the calibration factor, the mean result was 65.4 mN/m.

Table 2: Surface tension readings at 20 °C – neat test substance

Time after preparation (min)

Surface tension (mN/m)

19

24

26

28

30

Mean

34.0

34.5

34.5

34.0

34.5

34.4

After application of the calibration factor, the mean result was 34.9 mN/m. The Harkins-Jordan correction was then applied, giving a final mean result of 32.2 mN/m.

Conclusions:
The surface tension at 20 °C of MCPP-P 2-EHE was determined to be 32.2 mN/m for the neat test substance and 65.4 mN/m at 90% aqueous saturation, respectively.
Executive summary:

A study was conducted according to OECD TG 115, Regulation (EC) No 440/2005 Part A, A.5 (1999) to determine the surface tension of the neat substance and an aqueous solution of the test item using the ring method. Therefore, a saturated solution of the test substance in distilled water was prepared at 90% aqueous saturation. The solution and the neat substance were measured at the test temperature (20°C). The surface tension of MCPP-P 2-EHE was determined to be 32.2 mN/m for the neat test substance and 65.4 mN/m at 90% aqueous saturation at 20 °C.

Description of key information

The surface tension at 20 °C of MCPP-P 2-EHE was determined to be 32.2 mN/m for the neat test substance and 65.4 mN/m at 90 % aqueous saturation, respectively.

Key value for chemical safety assessment

Surface tension:
65.4

Additional information

A study was conducted according to OECD TG 115, Regulation (EC) No 440/2005 Part A, A.5 (1999) to determine the surface tension of the neat substance and an aqueous solution of the test item using the ring method [MCPP-P Task Force, 1999]. Therefore, a saturated solution of the test substance in distilled water was prepared at 90% aqueous saturation. The solution and the neat substance were measured at the test temperature (20°C).The surface tension of MCPP-P 2 -EHE was determined to be 32.2 mN/m for the neat test substance and 65.4 mN/m at 90 % aqueous saturationat 20 °C.