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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:
2007-12-06 - 2008-03-28
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
Key result
Surface tension:
ca. 72.9 mN/m
Temp.:
20.2 °C
Conc.:
90 vol%
Remarks on result:
other: 90 vol% of saturation value, testing perfornmed under yellow light.

Table 1 - Surface tension of the mmt

Measurement

Time passed

[minutes]

Surface tension

[mN/m]

Individual

Mean

Mean multiplied by

Φband Harkins-Jordan

corrected value

1

21

71.4

71.01

72.9

2

22

70.8

3

23

71.2

4

24

71.2

5

25

71.0

6

26

71.0

1 Mean calculated from measurements 2 to 6, after equilibrium was reached

Conclusions:
The OECD 115 guideline, harmonized ring method was used for the determination of the surface tension of the test substance. The surface tension at 90% of mmt saturation solubility in water at 20.2 °C was 72.9 mN/m. mmt would therefore not be considered surface active.

Description of key information

The surface tension of mmt at 90% of the saturation solubility in water at 20.2°C was 72.9 mN/m. mmt would not be considered to be surface active.

Key value for chemical safety assessment

Surface tension:
72.9

Additional information