Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
18 Jan 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Cross-reference
Reason / purpose for cross-reference:
reference to other study
Remarks:
Appearance

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

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
GLP compliance:
yes (incl. QA statement)
Remarks:
Landesamt für Umwelt, Wasserwirtschaft und Gewerbeaufsicht; Mainz, Deutschland
Type of method:
plate method

Test material

Constituent 1
Chemical structure
Reference substance name:
Sodium 3-sulphonatopropyl acrylate
EC Number:
239-806-4
EC Name:
Sodium 3-sulphonatopropyl acrylate
Cas Number:
15717-25-6
Molecular formula:
C6H9O5S.Na
IUPAC Name:
sodium 3-(prop-2-enoyloxy)propane-1-sulfonate
Test material form:
liquid

Results and discussion

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

Any other information on results incl. tables

Individual Results

The test item solution was held at constant temperature (20.0 ± 0.3 °C). 59 minutes after conclusion of the first measurement series, a second measurement series was performed for verification purposes.

The following values were recorded:

 

Measured Values Test Item First Series

Measurement

Time

Mass

SurfaceTension

Temperature

No

s

g

mN/m

°C

1

4.2

0.2978

72.65

20.0

2

5.1

0.2972

72.50

20.0

3

6.1

0.2970

72.45

20.0

4

7.1

0.2968

72.40

20.0

5

8.1

0.2967

72.38

20.0

6

9.1

0.2968

72.40

20.0

7

10.1

0.2969

72.43

20.0

8

11.2

0.2967

72.38

20.0

9

12.1

0.2966

72.35

20.0

10

13.1

0.2968

72.40

20.0

Mean

72.44

 

StandardDeviation

0.09

 

Measured Values Test Item Second Series

Measurement

Time

Mass

SurfaceTension

Temperature

No

s

g

mN/m

°C

1

4.1

0.2979

72.67

19.7

2

5.0

0.2972

72.50

19.7

3

6.1

0.2971

72.48

19.7

4

7.0

0.2971

72.48

19.7

5

8.1

0.2970

72.45

19.7

6

9.0

0.2973

72.53

19.7

7

10.1

0.2971

72.48

19.7

8

11.0

0.2971

72.48

19.7

9

12.1

0.2970

72.45

19.7

10

13.0

0.2969

72.43

19.7

Mean

72.49

 

StandardDeviation

0.07

 

After the first and the second measurement series, the difference between mean values was less than 5%. Therefore no additional measurement series was required.

 

Final Results

The surface tension of an aqueous solution of Sodium 3-sulphonatopropyl acrylate (SPA- Na) was determined as 72.44 ± 0.09 mN/m at 20.0 °C. One measurement was performed for verification (after 59 minutes). No significant changes and thus no significant dependence on time was observed. As these values were higher than 60 mN/m, Sodium 3-sulphonatopropyl acrylate (SPA-Na) was classified as not surface active.

Applicant's summary and conclusion