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Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experimental phase started 16th June 2016 and completed on the 15th January 2017.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
Ethylidynetrimethanol
EC Number:
201-063-9
EC Name:
Ethylidynetrimethanol
Cas Number:
77-85-0
Molecular formula:
C5H12O3
IUPAC Name:
ethylidynetrimethanol
Test material form:
solid: granular

Results and discussion

Surface tension
Key result
Surface tension:
72 mN/m
Temp.:
21.5 °C
Conc.:
1 g/L

Any other information on results incl. tables

 Results

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

Table 10          Sample 1

Time (mins)

Reading (mN/m)

Temperature (°C)

72

72.0

21.4

91

72.0

21.4

102

72.0

21.4

113

72.0

21.4

124

72.0

21.4

Table 11– Sample 2

Time (mins)

Reading (mN/m)

Temperature (°C)

142

72.0

21.6

151

72.0

21.6

161

72.0

21.6

171

72.0

21.6

180

72.0

21.6

Mean Sample 1 result:          72.0 mN/m                 pH of Sample 1 :       7.2

Mean Sample 2 result:          72.0 mN/m                 pH of Sample 2 :       7.0

Mean result                :          72.0 mN/m

Temperature              :          21.5 ± 0.5 ºC

Applicant's summary and conclusion

Conclusions:
The mean surface tension of the test item in water (nominal 1 g/L) has been determined to be 72.0 mN/m at 21.5 ± 0.5 °C. The test item was considered not to be surface-active.