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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:
2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
In accordance with test guidelines EC A.5 and OECD 115.
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
(1995)
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Qualifier:
according to guideline
Guideline:
other: ISO Standard 304-1985; Surface active agents - Determination of surface tension by drawing up liquid films
GLP compliance:
no
Type of method:
ring method
Surface tension:
68.7 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Table: Surface tension measurements

 Surface Tension of test solution #1 (mN/m)  Surface Tension of test solution #2 (mN/m)  Equilibrium Time from time of preparation
 69.9  67.4  4 hours
 69.9  67.4  5 hours
Conclusions:
Using the ring method, the surface tension of a 1 g/L aqueous test substance solution at 20°C has been determined as 68.7 mN/m. The substance is not surface active according to the criterium in the EC A.5 guideline.

Description of key information

Surface tension at 20°C and 1 g/L: 68.7 mN/m (EC A.5 and OECD 115: ring method)

Key value for chemical safety assessment

Surface tension:
68.7
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The substance is not surface active according to the criterium in the EC A.5 guideline.