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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:
Experimental start date: 12 January 2016 Experimental completion date: 25 March 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:
The determination was carried out by a ring method, using a procedure designed to be compatible with Method A.5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for the Testing of Chemicals,
27 July 1995.
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
ring method
Key result
Surface tension:
40 mN/m
Temp.:
21.8 °C
Conc.:
1 g/L
Remarks on result:
other: The mean surface tension of a duplicate solutions prepared at nominally 1 g/L solutions of test item in water has been determined to be 40.0 mN/m at 21.8 ± 0.5 °C. The test item was considered to be surface-active.

The readings, times and temperatures for the sample solutions are shown in the following tables:

 

Table 9 - Sample 1

 

Time (mins)

Reading (mN/m)

Temperature (°C)

90

40.0

21.8

101

40.0

21.8

112

40.0

21.8

123

40.0

21.8

134

40.0

21.8

Table 10 - Sample 2

 

Time (mins)

Reading (mN/m)

Temperature (°C)

166

40.0

21.8

177

40.0

21.8

188

40.0

21.8

199

40.0

21.8

210

40.0

21.8

 

Mean Sample 1 result

40.0 mN/m

pH of Sample 1 :

3.8

Mean Sample 2 result

40.0 mN/m

pH of Sample 2 :

3.7

 

Mean result:           40.0mN/m

Overall temperature:      21.8 ± 0.5 ºC

Conclusions:
The mean surface tension of a duplicate solutions prepared at nominally 1 g/L solutions of test item in water has been determined to be 40.0 mN/m at 21.8 ± 0.5 °C. The test item was considered to be surface-active.
Executive summary:

Surface Tension. 40.0 mN/m (1 g/L solution) at 21.8 ± 0.5 °C, using a ring method, designed to be compatible with Method A5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The test item was considered to be surface-active.

Description of key information

The mean surface tension of a duplicate solutions prepared at nominally 1 g/L solutions of test item in water has been determined to be 40.0 mN/m at 21.8 ± 0.5 °C. The test item was considered to be surface-active.

Key value for chemical safety assessment

Surface tension:
40
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The mean surface tension of a duplicate solutions prepared at nominally 1 g/L solutions of test item in water has been determined to be 40.0 mN/m at 21.8 ± 0.5 °C. The test item was considered to be surface-active.