Sodium 3-sulphonatopropyl acrylate

Surface tension

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 guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Deviations:

no

Test guideline 2

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

Test material information

Constituent 1

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.