trisodium 3-[(E)-2-(4-{[4-chloro-6-({2-[(4-{[4-(ethenesulfonyl)phenyl]amino}-6-fluoro-1,3,5-triazin-2-yl)amino]propyl}amino)-1,3,5-triazin-2-yl]amino}-5-sulfonaphthalen-1-yl)diazen-1-yl]naphthalene-1,5-disulfonate

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

04 July 2006 to 06 September 2006

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Deviations:

not specified

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

GLP compliance:

yes (incl. QA statement)

Remarks:

RCC Ltd, CH-4452 Itingen, Switzerland

Type of method:

ring method

Specific details on test material used for the study:

Identity: FAT 40826/A
Batch: TZ 5604 BOP 01/06
Purity: Content of organic part (Na-salt): approx. 78 %
Oligomers: 13 %
Main component: approx. 48 %
Appearance: Solid, orange powder
Expiration date: February 01, 2011
Storage: At room temperature at about 20 °C in a desiccator.

Surface tension:

60.9 mN/m

Temp.:

20.9 °C

Conc.:

0.1 other: % (w/v)

 

Determination of Surface Tension for the Test Item Solution

 

Time expired [hours:min]	Temperature [°C]	Surface tension [mN/m]
		measured	mean value calculated from the bold values (σ*)	mean value corrected for calibration (σ1)	σ1corrected for Harkins-Jordan (σ2)
First sample
0:30	20.8	61.0	60.48	61.42	60.67
0:31	20.8	60.9
0:32	20.8	60.5
0:33	20.8	60.3
0:34	20.8	60.2
0:35	20.8	60.0
Second sample
0:32	20.9	61.0	60.82	61.75	61.04
0:33	20.9	61.8
0:34	20.9	61.1
0:36	20.9	60.7
0:37	20.9	60.3
0:38	20.9	60.0

 

Mean value from both samples: σ = 60.9 mN/m

Conclusions:

The surface tension of FAT 40826 at 20.9 °C in water (concentration 0.1 %) was determined to be 60.9 mN/m.

Executive summary:

In a GLP-compliant study, the determination of the surface tension of an aqueous solution of FAT 40826/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 calibration factor <t>b was determined to be 1.0154 for double distilled water. In conclusion, the surface tension of FAT 40826/A in water (at a concentration of about 0.1 %) was determined to be 60.9 mN/m at 20.9 °C. Based on the criteria as outlined in the EEC Guideline, FAT 40826/A is not a surface active substance.

Description of key information

The surface tension of the test substance at 20.9 °C in water (concentration 0.1 %) was determined to be 60.9 mN/m.

Key value for chemical safety assessment

Surface tension:

60.9

Additional information

In a GLP-compliant study, the determination of the surface tension of an aqueous solution of FAT 40826/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 calibration factor <t>b was determined to be 1.0154 for double distilled water. In conclusion, the surface tension of FAT 40826/A in water (at a concentration of about 0.1 %) was determined to be 60.9 mN/m at 20.9 °C. Based on the criteria as outlined in the EEC Guideline, FAT 40826/A is not a surface active substance.