2-hydroxyethanesulphonic acid, compound with 4,4'-[hexane-1,6-diylbis(oxy)]bis[benzenecarboxamidine] (2:1)

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

may 2018

Reliability:

1 (reliable without restriction)

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

Specific details on test material used for the study:

Batch 42964
Expiry (Retest) date: 31 January 2019

Key result

Surface tension:

71.6 mN/m

Temp.:

21 °C

Conc.:

1.02 g/L

Remarks on result:

other: corrected

Surface tension:

70.7 mN/m

Temp.:

21 °C

Conc.:

1.02 g/L

Conclusions:

The surface tension of the test item aqueous solution read on the instrument was 70.7 mN/m at 21°C ± 0.5°C using the ring method representing the mean of five separate measurements. The measured values were corrected with Harkins-Jordan correction factor.
The measured surface tension was multiplied by Φb resulting in a corrected surface tension of 71.6 mN/m.
As the surface tension value was higher than 60 mN/m, Hexamidine diisethionate is classified as a non-surface active substance.

Description of key information

As the surface tension value was higher than 60 mN/m, Hexamidine diisethionate is classified as a non-surface active substance.

Key value for chemical safety assessment

Surface tension:

71.6

in mN/m at 20°C and concentration in mg/L:

1 020