Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
April 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:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
GLP compliance:
yes (incl. QA statement)
Type of method:
ring method

Test material

Constituent 1
Chemical structure
Reference substance name:
α-d-Glucopyranosiduronic acid, (3β,20β)-20-carboxy-11-oxo-30-norolean-12-en-3-yl 2-O-β-d-glucopyranuronosyl-, dipotassium salt
EC Number:
272-296-1
EC Name:
α-d-Glucopyranosiduronic acid, (3β,20β)-20-carboxy-11-oxo-30-norolean-12-en-3-yl 2-O-β-d-glucopyranuronosyl-, dipotassium salt
Cas Number:
68797-35-3
Molecular formula:
C42H62O16.2K
IUPAC Name:
α-d-Glucopyranosiduronic acid, (3β,20β)-20-carboxy-11-oxo-30-norolean-12-en-3-yl 2-O-β-d-glucopyranuronosyl-, dipotassium salt

Results and discussion

Surface tension
Key result
Surface tension:
ca. 55.4 mN/m
Temp.:
20 °C
Conc.:
0.88 g/L

Applicant's summary and conclusion

Executive summary:

The determination of the surface tension was carried out on the test item, with the use of a Krüss K11 Tensiometer by ring method (OECD 115 method). The surface tension value was found to be 56.0 mN/m at 20°C ± 0.5°C. As the surface tension value of the aqueous solution of the test item (at 0.88 g/L concentration level) was below than 60 mN/m, Dipotassium Glycyrrhizate is classified as a surface active substance.