Fatty acids, C8-10, zinc 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:

2012-02-09 to 2012-02-10

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

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:

signed 2010-10-20

Type of method:

ring method

Specific details on test material used for the study:

- Storage condition of test material: store at room temperature in thightly closed original container, keep dry.

Surface tension:

41.21 mN/m

Temp.:

20.1 °C

Conc.:

90 other: % saturated aqueous solution

Remarks on result:

other: standard deviation of <0.01mN/m

Conclusions:

The surface tension of a 90 % saturated aqueous solution of Fatty acids, C8-10, zinc salts was determined to be 41.21 mN/m with a standard deviation of <0.02 mN/m at a mean temperature of 20.1 °C. Since the surface tension is lower than 60 mN/m, Fatty acids, C8-10, zinc salts can be regarded as surface-active substance according to Council Regulation (EC) No. 440/2008 Method A.5.

Description of key information

The surface tension of a 90 % saturated aqueous solution of Fatty acids, C8-10, zinc salts was determined to be 41.21 mN/m with a standard deviation of <0.02 mN/m at a mean temperature of 20.1 °C. Fatty acids, C8-10, zinc salts can be regarded as surface-active substance.

Key value for chemical safety assessment

Surface tension:

41.21

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

304.2

Additional information

Fatty acids, C8 -10, zinc salts can be regarded as surface-active substance according to Regulation (EC) No. 440/2008 Method A.5 as the surface tension is lower than 60 mN/m.

Fatty acids, C8 -10, zinc salts has a water solubility of 338.0 mg/L. A 90 % saturated aqueous solution of Fatty acids, C8 -10, zinc salts has therefore a concentration of 304.2 mg/L.