dinotefuran (ISO); 1-methyl-2-nitro-3-(tetrahydro-3-furylmethyl)guanidine

Surface tension

Link to relevant study record(s)

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

Guideline:

EU Method A.5 (Surface Tension)

Deviations:

no

Qualifier:

according to guideline

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.

Key value for chemical safety assessment

Surface tension:

72

in mN/m at 20°C and concentration in mg/L:

1 000