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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:
31/08/2000 - 09/01/2001
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP, Guideline study
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
GLP compliance:
yes
Type of method:
ring method
Key result
Surface tension:
72 mN/m
Temp.:
20.2 °C
Conc.:
0.1 vol%

Determination of the surface tension of the test item solution

Time expired

(hours : min)

Temperature

(ºC)

Surface tension

(mN/m)

measured

mean value calculated from the bold values

(δ*)

corrected for calibration and for Harkins-Jordan

(δ)

First sample

 

 

00:02

20.1

72.1

00:03

20.1

71.8

00:09

20.3

71.8

00:10

20.3

71.7

00:12

20.4

71.8

Second sample

00:01

20.1

71.8

00:02

20.1

71.7

00:09

20.3

71.6

00:10

20.3

71.8

00:11

20.4

71.7

71.78

72.05

Where:

δ* · Φb · Fc = δ (71.78 · 1.0039 · 0.9999 = 72.05)

Φb = calibration factor = 1.0039

Fc = factor for correction acc. To Harkins-Jordan = 0.9999 for 71.8 mN/m

Conclusions:
Surface tension of dinotefuran in water (at a concentration of about 0.1%) is determined to be 72 mN/m at 20.2°C ± 0.2°C. Based on the criteria as outlined in the OECD Guideline, dinotefuran is not a surface active substance.

Description of key information

Key value for chemical safety assessment

Surface tension:
72
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information