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Physical & Chemical properties

Surface tension

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Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report Date:
2016

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
GLP compliance:
yes
Type of method:
OECD harmonised ring method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Name of test material (as cited in study report): Ethyl Ascorbic acid
Physical state: White to very pale yellow crystalline powder
Test item storage: In freezer (≤ -15°C) desiccated
Stability: Stable under storage conditions until 21 April 2018 (retest date)

Results and discussion

Surface tension
Surface tension:
72.4 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Any other information on results incl. tables

Results

The results for the determination of the surface tension of the test solution are given in the table.

Surface tension of the test item

 

 

 

Surface tension

[mN/m]

 

Measurement

Time passed after transfer test solution to test vessel [minutes]

individual

mean

mean multiplied by Φb and Harkins-Jordan

corrected value

1

18

71.2

71.0

72.4

2

19

70.8

3

20

71.0

4

21

70.9

5

22

71.0

 

Conclusion

The OECD harmonized ring method was applied for the determination of the surface tension of Ethyl Ascorbic acid. The surface tension of a test solution at a concentration of 1 g/l in water and at 20 °C was 72.4 mN/m. According to this, the test item is considered not to be surface active.

Applicant's summary and conclusion