Alcohols, C10-16, ethoxylated, sulfosuccinates, disodium salts

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

13-Mar-2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

GLP compliance:

yes (incl. QA statement)

Remarks:

Ministero della Salute, D.G. Della Prevenzione Sanitaria Officio IV, Milan, Italy.

Type of method:

ring method

Remarks:

Du Noüy’s ring method and plate method

Surface tension:

< 60 mN/m

Temp.:

20 °C

Conc.:

9.06 mg/L

Results

The instrument K11 was calibrated before the measurement. The test results are reported in Table 1.

In Table 2 are reported the test results of the determination of surface tension performed on ultra-pure water (Fresenius Kabi.; lot:19KM21GA).

The test item shows a surface tension lower than 60 mN/m. So the test item can be considered as a surface-active material according to EC Method A.5.

 

Table 1

[TRADE NAME]:Surface Tension at (20 °C ± 0.5 °C),mN/m

TEST	TIME s	SURFACE TENSION mN/m	MEAN VALUE mN/m	STANDARD DEVIATION mN/m
1	52.4	51.9	51.8	0.3
2	87.5	52.4
3	127.5	52.0
4	166.9	52.0
5	206.3	52.0
6	245.6	51.8
7	284.5	51.7
8	324.6	51.7
9	363.0	51.5
10	403.3	51.4

 

Table 2

Water: Surface Tension at (20 °C ± 0.5 °C),mN/m

TEST	TIME s	SURFACE TENSION mN/m	MEAN VALUE mN/m	STANDARD DEVIATION mN/m
1	56.7	71.8	72.5	0.3
2	93.2	72.4
3	133.8	72.6
4	173.8	72.5
5	214.1	72.5
6	252.5	72.6
7	291.9	72.6
8	332,1	72.7
9	372.4	72.5
10	413.1	72.5

Description of key information

< 60 mn/M at 20°C ( Du Noüy’s ring method and plate method, OECD 115).

Additional information

The substance can be considered as surface active.