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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:
Experimental starting date: 23 October 2017 Experimental completion date: 13 November 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The study is considered to be a reliability 1 as it has been conducted according to OECD 115 using the ring method and in compliance with GLP.
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
GLP compliance:
yes
Type of method:
ring method
Specific details on test material used for the study:
Identification: FRET 11-0539
Appearance/physical state: clear, colorless liquid
Storage conditions: room temperature, in the dark
Surface tension:
54 mN/m
Temp.:
20 °C
Conc.:
90 other: % Saturated solution
Remarks on result:
other: Sample 1
Surface tension:
54.9 mN/m
Temp.:
20 °C
Conc.:
90 other: % Saturated solution
Remarks on result:
other: Sample 2
Surface tension:
54.5 mN/m
Temp.:
20 °C
Conc.:
90 other: % Saturated solution
Remarks on result:
other: Mean

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

Sample 1

Time (mins)

Reading (mN/m)

Temperature (°C)

79

54.0

20.2

88

54.0

20.2

97

54.0

20.2

105

54.0

20.2

114

54.0

20.2

Sample 2

Time (mins)

Reading (mN/m)

Temperature (°C)

171

54.5

20.4

179

55.0

20.4

188

55.0

20.4

196

55.0

20.4

204

55.0

20.4

Mean sample 1 result:           54.0 mN/m                 pH of sample 1:          5.9

Mean sample 2 result:           54.9 mN/m                 pH of sample 2:          5.9

Mean result:              54.5 mN/m

Test temperature:       20.0 ± 0.5 ºC

Discussion

According to criteria mentioned in EC Method A.5, substances showing a surface tension lower than 60 mN/m under the conditions of this method should be regarded as being surface active.

Conclusions:
The Surface Tension of FRET 11-0539 has been determined to be 54.5 mN/m at 20°C according to OECD TG 115 (Surface Tension of Aqueous Solutions) using ring method in compliance with GLP. According to EU method A5, the substance is considered to be surface active because the value is less than 60mN/m.

Executive summary:

The Surface Tension of FRET 11-0539 has been determined to be 54.5 mN/m at according to OECD TG 115 (Surface Tension of Aqueous Solutions) using ring method. According to EU method A5, the substance is considered to be surface active because the value is less than 60mN/m (http://enfo.agt.bme.hu/drupal/sites/default/files/A05web1992.pdf). 

Description of key information

The Surface Tension of FRET 11-0539 has been determined to be 54.5 mN/m at according to OECD TG 115 (Surface Tension of Aqueous Solutions) using ring method. According to EU method A5, the substance is considered to be surface active because the value is less than 60mN/m (http://enfo.agt.bme.hu/drupal/sites/default/files/A05web1992.pdf). 

Key value for chemical safety assessment

Surface tension:
54.5

Additional information