Hydrogenated rosin, zinc salt

Surface tension

Administrative data

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 11 February 2016 to 13 June 2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2016

Report date:

2016

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

2008

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Version / remarks:

1995

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

OECD harmonised ring method

Test material

Test material information

Constituent 1

Reference substance name:

bis((7-isopropyl-1,4a-dimethyl-1,2,3,4.4a.5.6.7.8.9.10.10a-dodecahydrophenanthrene-1-carbonyl)oxy)zinc

EC Number:

810-810-3

Cas Number:

68425-02-5

Molecular formula:

The substance is a UVCB, of which a major component can be represented by the following: [C20H33O2]2Zn

IUPAC Name:

bis((7-isopropyl-1,4a-dimethyl-1,2,3,4.4a.5.6.7.8.9.10.10a-dodecahydrophenanthrene-1-carbonyl)oxy)zinc

Test material form:

solid

Details on test material:

- Appearance: Brown coloured, brittle solid
- Storage condition of test material: At room temperature
- Chemical name: Zinc modified rosinate, hydrogenated zinc rosinate
- CAS No.: 68425-02-5

Results and discussion

Surface tension

Key result

Surface tension:

73.2 mN/m

Temp.:

20 °C

Remarks on result:

other: Conc.= 90% of the saturation solubility

Any other information on results incl. tables

Table: Surface tension measurements

Measurement	Time passed after transfer test solution to test vessel [minutes]	Surface tension [mN/m]
		individual	mean	mean multiplied by Φb and Harkins-Jordan corrected value
1	16	72.5
2	17	72.5	72.5	73.2
3	18	72.4
4	19	72.6
5	20	72.4

 

Applicant's summary and conclusion

Conclusions:

The surface tension at 20°C of a 90% saturated aqueous solution of the substance was determined to be 73.2 mN/m.

Executive summary:

Using the OECD harmonized ring method in a GLP study according to EC A.5 and OECD 115, the surface tension at 20°C of an aqueous solution of the substance at 90% of the saturation solubility was determined to be 73.2 mN/m. According to the EC A.5 guideline the substance is not surface active.