Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19 June 2017 to 4 July 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 guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: ASTM D1331
Version / remarks:
11 Standard Test Methods for Surface and Interfacial Tension of Solutions of Surface-Active Agents
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: ISO 304 (1985)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
OECD harmonised ring method

Test material

Constituent 1
Chemical structure
Reference substance name:
11-oxahexadecan-16-olide
EC Number:
222-225-5
EC Name:
11-oxahexadecan-16-olide
Cas Number:
3391-83-1
Molecular formula:
C15H28O3
IUPAC Name:
1,7-dioxacycloheptadecan-8-one
Test material form:
liquid
Specific details on test material used for the study:
Lot No.: VE00441526
Aspect: colourless liquid, may crystallize
Purity: 98.4% (major peak)

Results and discussion

Surface tension
Surface tension:
51.5 mN/m
Temp.:
20 °C
Conc.:
90 other: % of saturation concentration

Any other information on results incl. tables

The results in the table below show that there is no significant change of the measured surface tension. Thus it can be concluded that equilibrium is reached. Thus the results obtained were averaged, to give the surface tension of the solution.

The result is: 51.5 mN/m

Therefore, according to this test, it was considered that the test material is surface active (surface tension < 60 mN/m).

 

Determination

Surface tension reading [mN/m]

1

51.4

2

51.5

3

51.6

4

51.6

5

51.4

6

51.5

7

51.5

Mean reading:

51.5

Applicant's summary and conclusion

Conclusions:
The results showed that there is no significant change of the measured surface tension. Thus it can be concluded that equilibrium is reached. Thus the reults obtained were averaged, to give the surface tension of the solution. The result is 51.5 mN/m.
Therefore, according to this test, it was considered that the test material is surface active (surface tension < 60 mN/m).
Executive summary:

The surface tension of a solution of Musk R1 in ultrapure water (33.5 mg/L, ~90% of the saturation concentration) was determined according to the OECD Guideline No. 115, using the ring method.

The result is: 51.5 mN/m.

Therefore, according to this test, it was considered that the test material is surface active (surface tension < 60 mN/m).