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Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019
Report date:
2019

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)

Test material

Constituent 1
Reference substance name:
1-(1-oxododecyl)-L-proline
Cas Number:
58725-39-6
Molecular formula:
C17H31NO3
IUPAC Name:
1-(1-oxododecyl)-L-proline
Constituent 2
Reference substance name:
1-(1-oxotetradecyl)-L-Proline
Cas Number:
86282-96-4
Molecular formula:
C19H35NO3
IUPAC Name:
1-(1-oxotetradecyl)-L-Proline
Constituent 3
Reference substance name:
1-(1-oxodecyl)-L-Proline
Cas Number:
86282-95-3
Molecular formula:
C15H27NO3
IUPAC Name:
1-(1-oxodecyl)-L-Proline
Constituent 4
Reference substance name:
1-(1-oxooctyl)-L-Proline
Cas Number:
86282-94-2
Molecular formula:
C13H23NO3
IUPAC Name:
1-(1-oxooctyl)-L-Proline
Constituent 5
Reference substance name:
1(1-oxohexadecyl)-L-proline
Cas Number:
59441-32-6
Molecular formula:
C21H39NO3
IUPAC Name:
1(1-oxohexadecyl)-L-proline
Constituent 6
Reference substance name:
Dodecanoylprolyl-Lproline
IUPAC Name:
Dodecanoylprolyl-Lproline
Constituent 7
Reference substance name:
Tetradecanoylprolyl-L-proline
IUPAC Name:
Tetradecanoylprolyl-L-proline
Constituent 8
Reference substance name:
Palmitoylprolyl-L-proline
IUPAC Name:
Palmitoylprolyl-L-proline
Constituent 9
Reference substance name:
1-(1-oxooctadecyl)-L-proline
Molecular formula:
C23H43NO3
IUPAC Name:
1-(1-oxooctadecyl)-L-proline
Constituent 10
Reference substance name:
potassium;chloride
Cas Number:
7447-40-7
Molecular formula:
KCl
IUPAC Name:
potassium;chloride
Constituent 11
Reference substance name:
Reference substance 001
Cas Number:
1310-58-3
Molecular formula:
KOH
Constituent 12
Reference substance name:
Tripotassium phosphate
Cas Number:
7778-53-2
IUPAC Name:
Tripotassium phosphate
impurity 1
Reference substance name:
Unknown impurities
IUPAC Name:
Unknown impurities
Specific details on test material used for the study:
Cocoyl proline is produced directly in water solution. In this test, cocoyl proline was tested in the commercialized form, so in aqueous solution.

This choice was taken considering that for surface tension, solids need to be dissolved in water before testing. Furthermore, it provides a better understanding on the properties of the substance in the form that will be in contact with final users

Water percentage in the sample varies between 30 and 50%.

Results and discussion

Surface tension
Key result
Surface tension:
25.9 mN/m
Temp.:
20 °C
Conc.:
60 other: w/w%
Remarks on result:
other: concentration between 50 and 70%

Applicant's summary and conclusion

Conclusions:
Cocoyl proline, in the commercialized form at 50-70% concentration, shows a surface tension of 25,9 mN/m.

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