Nickel, 5-[2-(2-hydroxy-3,7-disulfo-1-naphthalenyl)diazenyl]-1H-1,2,4-triazole-3-carboxylate sodium complexes

Surface tension

Administrative data

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental period 20th September 2002 to 5th February 2003

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Meets the criteria for classification as Reliable without restriction according to Klimisch et al (1997)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2004

Report date:

2004

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

GLP compliance:

yes

Type of method:

plate method

Test material

Test material information

Constituent 1

Reference substance name:

-

EC Number:

443-510-2

EC Name:

-

Cas Number:

738587-10-5

Molecular formula:

C26H14N10Ni2O18S4 as free acid

IUPAC Name:

dinickel(2+) sodium 3-carboxy-5-[(1E)-2-(7-oxido-2,6-disulfonaphthalen-1-yl)diazen-1-yl]-1H-1,2,4-triazol-1-ide 3-carboxy-5-[(1E)-2-(7-oxido-2-sulfo-6-sulfonatonaphthalen-1-yl)diazen-1-yl]-1H-1,2,4-triazol-1-ide

Results and discussion

Surface tension

Surface tension:

72.1 mN/m

Temp.:

25 °C

Conc.:

980 mg/L

Any other information on results incl. tables

2 tests were conducted.

Test 1

72.01 mNm-1 at 25°C ± 1°C mean of the last 10 measurements.

0.0964g test substance in 100ml Milli Q distilled/deionised water.

The test was equilibrated in the bath and test vessel. Total time for preparation of test and equilibration was 24 minutes before the surface tension measurements were commenced.

Time/seconds  Reading mNm-1  0.4  71.92  60.5  71.97  120.5  71.99  180.5  71.99  240.6  71.99  300.6  71.99  360.6  71.99  420.6  71.99  480.6  71.99  540.6  71.99  600.6  71.99  660.6  72.02  720.6  72.02  780.6  72.02  840.6  72.02  900.6  72.02  960.5  72.02  1020.6  72.02  1080.5  71.99  1140.6  71.99  1200.6  71.99  1260.5  72.02  1320.5  71.99  1380.6  72.02  1440.5  71.99  1500.6  72.02  1560.5  71.99  1620.5  71.99  1680.5  72.02  1740.5  72.02

Test 2

72.16 mNm-1 at 25°C ± 1°C mean of the last 10 measurements.

9:9.989g test substance in 100ml Milli Q distilled/deionised water.

The test was equilibrated in the bath and test vessel. Total time for preparation of test and equilibration was 26 minutes before the surface tension measurements were commenced.

Time/ seconds  Reading mNm-1  0.4  72.09  60.4  72.19  120.4  72.16  180.4  72.16  240.4  72.14  300.4  72.14  360.5  72.16  420.5  72.16  480.5  72.14  540.5  72.14  600.5  72.16  660.5  72.14  720.5 72.14   780.4  72.16  840.4  72.16  900.4  72.16  960.4  72.16  1020.4  72.16  1080.4  72.16  1140.4  72.16  1200.3  72.16  1260.3  72.16  1320.3  72.16  1380.3  72.16  1440.3  72.16  1500.2  72.16  1560.2  72.16  1620.2  72.16  1680.2  72.14  1740.3  72.16

Applicant's summary and conclusion

Conclusions:

Surface tension is 72.1 mNm-1 at 25°C +/- 1°C

Executive summary:

Introduction

The test method used was EU method A5. Solutions of the test substance were prepared as described using Milli Q distilled/ deionised water. Both tests were examined using a KrOss Processor Tensiometer fitted with a Wilhelmy plate.

Results and conclusion

Test 1: 72.0mNm-1 at 25°C +/-1 °C

Test 2: 72.2 mNm-1 at 25°C +/- 1°C

Mean: 72.1 mNm-1 at 25°C +/-1°C

The results indicate that the test substance is not surface active.

No ageing effect noticed during measurement of surface tension.