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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:
28,April 2017 - 06, December 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)
Version / remarks:
27th July 1995
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
May 2008
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
ring method
Remarks:
The test was performed with the help of Krüss Easy Dyne type tensiometer.
Key result
Surface tension:
54.7 mN/m
Temp.:
20 °C
Conc.:
255 mg/L
Remarks on result:
other: at 131 sec
Remarks:
* Time expired since the test item solution was transferred into the test vessel.
Key result
Surface tension:
53.8 mN/m
Temp.:
20 °C
Conc.:
255 mg/L
Remarks on result:
other: at 131 sec
Remarks:
* Time expired since the test item solution was transferred into the test vessel.
Key result
Surface tension:
53.7 mN/m
Temp.:
20 °C
Conc.:
255 mg/L
Remarks on result:
other: at 136 sec
Remarks:
* Time expired since the test item solution was transferred into the test vessel.
Key result
Surface tension:
54.3 mN/m
Temp.:
20 °C
Conc.:
255 mg/L
Remarks on result:
other: at 136 sec
Remarks:
* Time expired since the test item solution was transferred into the test vessel.
Key result
Surface tension:
53.3 mN/m
Temp.:
20 °C
Conc.:
255 mg/L
Remarks on result:
other: at 138 sec*
Remarks:
* Time expired since the test item solution was transferred into the test vessel.
Key result
Surface tension:
53.5 mN/m
Temp.:
20 °C
Conc.:
255 mg/L
Remarks on result:
other: at 136 sec*
Remarks:
* Time expired since the test item solution was transferred into the test vessel.
Key result
Surface tension:
54 mN/m
Temp.:
20 °C
Conc.:
255 mg/L
Remarks on result:
other: mean value
Conclusions:
The surface tension of Reaction mass of N-butylphthalimide and n-propylphthalimide and N-sec-butylphthalimide aqueous solution (ca. 255 mg / 1000 mL) was
found to be 54.7, 53.8, 53.7, 54.3, 53.3 and 53.5 mN/m (resulting a mean value 54 mN/m) at 20 °C using the ring method.

As this value is lower than 60 mN/m, Reaction mass of N-butylphthalimide and
n-propylphthalimide and N-sec-butylphthalimide is classified as surface active.
Executive summary:

In the course of this study an aqueous solution ofReaction mass of N-butylphthalimide and n-propylphthalimide and N-sec-butylphthalimide witha concentration of ca. 255 mg/L was prepared. The surface tension of this solution was determined applying the ring method. The test was performed with the help of Krüss Easy Dyne type tensiometer.

The surface tension of Reaction mass of N-butylphthalimide and n-propylphthalimide and N-sec-butylphthalimide aqueous solution (ca. 255 mg / 1000 mL) was found to be54.7, 53.8, 53.7, 54.3, 53.3 and 53.5 mN/m (resulting a mean value 54 mN/m) atusing the ring method.

As this value is lower than 60 mN/m, Reaction mass of N-butylphthalimide and n-propylphthalimide and N-sec-butylphthalimide is classified as surface active.

 

Description of key information

The surface tension of Reaction mass of N-butylphthalimide and n-propylphthalimide and N-sec-butylphthalimide aqueous solution (ca. 255 mg / 1000 mL) was  found to be 54.7, 53.8, 53.7, 54.3, 53.3 and 53.5 mN/m (resulting a mean value 54 mN/m) at 20 °C using the ring method.

As this value is lower than 60 mN/m, Reaction mass of N-butylphthalimide and n-propylphthalimide and N-sec-butylphthalimide is classified as surface active.

Key value for chemical safety assessment

Surface tension:
54
in mN/m at 20°C and concentration in mg/L:
255

Additional information