Dodeca (lithium, sodium)-2-({4-[4-(4-{bis[alkyl-(sulfonatoalkoxy)-4-({-sulfonato-[(substituted-phenyl)diazenyl]phenyl} diazenyl)anilino]-triazin-yl}-6-[alkyl-(sulfonatoalkoxy)-4-(sulfonato--[(substituted-phenyl)diazenyl]phenyl)diazenyl)anilino]piperazin-yl)-triazin-ylamino]-alkyl-5-(sulfonatoalkoxy)phenyl}diazenyl)-5-[(sulfonatophenyl)diazenyl]benzensulfonate

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

11 February 2011 – 04 May 2011

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: This study has been performed according to OECD and EC guidelines and in compliance with GLP principles.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2011

Report date:

2011

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Version / remarks:

(1995)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Version / remarks:

(Official Journal of the European Union no. L142, May 31, 2008)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

other: differential scanning calorimetry (DSC)

Test material

Reference

Name:

Unnamed

Type:

Constituent

Details on test material:

- Name of test material (as cited in study report): E-BW102
- Description: Reddish brown powder
- Batch: MB-1
- Test substance storage: At room temperature protected from light
- Stability under storage conditions: Stable
- Expiry date: 23 December 2015

Results and discussion

Melting / freezing point

Decomposition:

yes

Decomp. temp.:

300 °C

Remarks on result:

other: no melting of the test substance was observed below 300°C; substance has no melting temperature

Any other information on results incl. tables

Preliminary test

From 100°C upwards the weight of the sample decreased significantly. At 448°C the sample weight had decreased by 25%. After the experiment, a black residue remained in the sample container (original colour: reddish brown). The change of the colour indicated reaction and/or decomposition of the test substance.

Main study

A broad endothermic peak between 50°C and 300°C was observed. This effect might be due to evaporation of minor compounds but does not derive from melting or boiling of the major compound in E-BW102. Therefore, this effect was not reported as melting or boiling of the test substance. An exothermic effect was observed between 300°C and 400°C. The effect was due to reaction and/or decomposition of the test substance. After the experiment, a black residue remained in the sample container. The change of the colour indicated reaction and/or decomposition of the test substance.

Applicant's summary and conclusion

Conclusions:

Reaction and/or decomposition of the test substance was observed starting at 300°C (573K). Melting of the test substance was not observed below the temperature at which reaction and/or decomposition started. Based on this, the test substance has no melting temperature.