1-[[2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan-2-yl]methyl]-1H-1,2,4-triazole

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

09 Apr 2013 to 11 Apr 2013

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

dated May 30, 2008

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Version / remarks:

adopted July 27, 1995

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

ring method

Key result

Surface tension:

55 mN/m

Temp.:

20 °C

Conc.:

1.043 g/L

Remarks on result:

other: 90% saturated solution of test item in water

CALIBRATION FACTOR (Φb)

The readings, temperatures and the corresponding calibration factors for the high purity water relevant to Sample Solution A and Sample Solution B are presented in Table 1 and Table 2 respectively.

 

SAMPLE SOLUTION READINGS

- The readings, times and temperatures for Sample Solution A and Sample Solution B are presented in Table 3 and Table 4 respectively.

- Surface tension = reading x calibration factor

- Sample Solution A = 54.5 x 1.010

- Sample Solution A = 55.0 mN/m

- Sample Solution B = 54.4 x 1.010

- Sample Solution B = 54.9 mN/m

- Temperature = 20.0 ± 0.5 ºC

- pH of sample solution = Sample Solution A = 6.7 and Sample Solution B = 6.7

 

Table 1. Water calibration data relevant to sample solution a.

Reading (mN/m)	Temperature (ºC)	Literature Value (mN/m)	Calibration Factor
72.0	20.2	72.69	1.010
72.0	20.2	72.69	1.010
72.0	20.2	72.69	1.010
72.0	20.2	72.69	1.010
72.0	20.2	72.69	1.010
72.0	20.2	72.69	1.010
Mean Calibration Factor = 1.010

 

Table 2. Water calibration data relevant to sample solution b.

Reading (mN/m)	Temperature (ºC)	Literature Value (mN/m)	Calibration Factor
72.0	20.2	72.69	1.010
72.0	20.2	72.69	1.010
72.0	20.2	72.69	1.010
72.0	20.2	72.69	1.010
72.0	20.2	72.69	1.010
72.0	20.2	72.69	1.010
Mean Calibration Factor = 1.01

 

 

Table 3. Sample solution a surface tension measurements

Time (mins)	Temperature (ºC)	Reading (mN/m)
63	20.2	54.5
70	20.2	54.5
75	20.2	54.5
81	20.2	54.5
90	20.2	54.5
Mean sample reading = 54.5

 

Table 4. Sample solution b surface tension measurements

Time (mins)	Temperature (ºC)	Reading (mN/m)
62	20.2	54.5
69	20.2	54.0
75	20.2	54.5
81	20.2	54.5
86	20.2	54.5
Mean sample reading = 54.4

 

On completion of the static equilibration period at 20 °C, both aqueous sample solutions contained undissolved, excess test item; indicating that saturation had been achieved. As the undissolved test item was well separated as a single globule, it was possible to directly isolate the clear, colorless, saturated solution from each sample, without the need for centrifugation.

Conclusions:

The average surface tension of duplicate 90% saturated solution of test item in water has been determined to be 55.0 mN/m at 20.0 ± 0.5 °C

Executive summary:

The study was performed to determine the surface tension of the test item in accordance with the EU Method A.5 and OECD TG 115 and in compliance with GLP. The average surface tension of duplicate 90% saturated solution of test item in water has been determined to be 55.0 mN/m at 20.0 ± 0.5 °C

Description of key information

55.0 mN/m at 20.0 ± 0.5 °C in a 90% saturation solution, EU Method A.5, ring method, O'Connor 2013

Key value for chemical safety assessment

Surface tension:

55

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

1 043