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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Study Phase 2013-04-30 to 2013-06-14. Test Report 2013-10-17
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study meets the criteria for classification as reliable without restriction according to Klimisch etal (1997)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report date:
2013

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes
Type of method:
other: Buchi melting point apparatus

Test material

Constituent 1
Chemical structure
Reference substance name:
lithium hydrogen 7-{(E)-[2-amino-4-(2-naphthyl)-1,3-thiazol-5-yl]diazenyl}naphthalene-1,3,5-trisulfonate (2:1:1)
EC Number:
940-433-0
Molecular formula:
C23H14Li2N4O9S4
IUPAC Name:
lithium hydrogen 7-{(E)-[2-amino-4-(2-naphthyl)-1,3-thiazol-5-yl]diazenyl}naphthalene-1,3,5-trisulfonate (2:1:1)
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder

Results and discussion

Melting / freezing point
Melting / freezing pt.:
> 400 °C
Decomposition:
yes
Decomp. temp.:
184 °C

Any other information on results incl. tables

It was observed that the colour of the test material changed at 184°C to dark brown which indicated decomposition. No other changes were observed upto 400°C.

Applicant's summary and conclusion

Conclusions:
The melting point of the test material was determined to be >400 C. Decomposition of the test material occured at 184 C.
Executive summary:

Introduction

This study was undertaken to determine the melting point of the test material. The melting point was determined according to OECD Guideline 102.

Results & Conclusions

No melting point of the test material was observed within the instrument and calibration threshold of 400 C. The colour of the test item changed at 184 C to dark brown indicating decomposition. Therefore, the melting point of the test material in this study was >400 C and the decomposition temperature was 184 C.