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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:
From 01 July 2015 to 26 July 2016.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
2008
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
1995
Deviations:
no
GLP compliance:
yes
Type of method:
OECD harmonised ring method
Key result
Surface tension:
65.8 mN/m
Temp.:
20 °C
Remarks on result:
other: Conc.= 90% of saturation

Table: Surface tension measurements

 

Measurement

Time passed after transfer test solution to test vessel

[minutes]

Surface tension [mN/m]

individual

mean (1)

mean multiplied by
Φb and Harkins-Jordan corrected value

 

 

 

 

 

1

17

64.7

 

 

2

18

64.5

64.4

65.8

3

19

64.2

 

 

4

20

64.4

 

 

5

21

64.4

 

 

6

22

64.3

 

 

 

 

 

 

 

(1) Mean calculated from measurements 2 to 6. 

Conclusions:
The surface tension at 20°C of a 90% saturated aqueous solution of PEMP product was determined to be 65.8 mN/m.
Executive summary:

Using the OECD harmonized ring method in a GLP study according to EC A.5 and OECD 115, the surface tension at 20°C of a 90% saturated aqueous solution of PEMP product was determined to be 65.8 mN/m. According to the EC A.5 guideline the substance is not surface active.

Description of key information

 Surface tension at 20°C: 65.8 mN/m (EC A.5, OECD 115: OECD harmonised ring method)

Key value for chemical safety assessment

Surface tension:
65.8

Additional information

 Tested concentration: 90% of the saturation concentration.