Tetrasodium [2-({4-fluoro-6-[(2-{[4-fluoro-6-({5-(hydroxykappaO)-6-[(2-{[2-(hydroxy-kappaO)-5-sulfophenyl] diazenyl-kappaN1}-4,5-dimethoxyphenyl) diazenyl-kappaN2]-7-sulfo-2-naphthyl} amino)-1,3,5-triazin-2-yl] amino} propyl) amino]-1,3,5-triazin-2-yl} amino) benzene-1,4- disulfonato(6-)] cuprate(4-)

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experiment start and completion date - 05 April 2006; Study completion date - 06 September 2006.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

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:

yes (incl. QA statement)

Type of method:

ring method

Specific details on test material used for the study:

Identity: FAT 40825/A
Batch number: CHU 297 / BOP 04/05
Purity: Organic part (Na-salt): approx. 83.7 %; All coloured components: approx. 80.54 %; Main component: approx. 59.1 %.
Appearance: Solid, black powder
Storage conditions: At room temperature at about 20 °C
Expiration date: December 31, 2010

Surface tension:

75.3 mN/m

Temp.:

21.2 °C

Conc.:

1 g/L

Conclusions:

The surface tension of FAT 40825/A in water (at a concentration of about 0.1 %) was determined to be 75.3 mN/mat 21.2 °C

Executive summary:

The determination of the surface tension of an aqueous solution of FAT 40825/A was based on the OECD Guideline No. 115: "Surface Tension of Aqueous Solutions" (1995) and on the EEC Directive 92/69, Part A, Methods for the determination of physico-chemical properties, A.5 "Surface tension", EEC Publication No. L383, December 1992. The experiment was performed using a tensiometer. The calibration factor was determined to be 1.0493 for double distilled water. In conclusion, the surface tension of FAT 40825/A in water (at a concentration of about 0.1 %) was determined to be 75.3 mN/mat 21.2 °C. FAT 40825/A is not a surface active substance.

Description of key information

The surface tension of FAT 40825/A in water (at a concentration of about 0.1 %) was determined to be 75.3 mN/mat 21.2 °C.

Key value for chemical safety assessment

Surface tension:

75.3

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

1 000

Additional information

The determination of the surface tension of an aqueous solution of FAT 40825/A was based on the OECD Guideline No. 115: "Surface Tension of Aqueous Solutions" (1995) and on the EEC Directive 92/69, Part A, Methods for the determination of physico-chemical properties, A.5 "Surface tension", EEC Publication No. L383, December 1992. The experiment was performed using a tensiometer. The calibration factor was determined to be 1.0493 for double distilled water. In conclusion, the surface tension of FAT 40825/A in water (at a concentration of about 0.1 %) was determined to be 75.3 mN/mat 21.2 °C. FAT 40825/A is not a surface active substance.