Zinc dipropionate

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

29.07.-04.08.2016

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Remarks:

not performed according to GLP

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Deviations:

no

GLP compliance:

no

Type of method:

plate method

Key result

Surface tension:

72.76 mN/m

Temp.:

20 °C

Conc.:

1 g/L

Remarks on result:

other: Temperature during the test was not reported, however standard temperature (20°C) can be assumed.

Result: σ1 = 72.77 mN/m, σ2 = 72.81 mN/m, σ3 = 72.71 mN/m (No time dependence observed within 360 s)

σ = 72.76 mN/m

Conclusions:

Surface tension σ = 72.76 mN/m

Description of key information

Surface tension σ = 72.76 mN/m

Zinc dipropionate is considered to be non surface active, since the criterion for surface activity is a surface tension < 60 mN/m.

Key value for chemical safety assessment

Surface tension:

72.76

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

1 000

Additional information

The surface tension is determined using the Wilhelmy plate method according to OECD guideline 115 (based on ISO 304-1985) and regulation (EC) No. 440/2008, A.5.