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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
27th March 2007 to 19th April 2007
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of relevant results.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
Date of inspection: 30th August 2005 Date of signature: 21st November 2005
Type of method:
thermal analysis
Remarks:
differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Sponsor's identification :C-C1
Description : dark blue powder
Lot number : MB-1
Date received : 05 March 2007
Storage conditions :room temperature in the dark, over silica gel

Results and discussion

Melting / freezing point
Melting / freezing pt.:
> 320 °C
Decomposition:
yes
Decomp. temp.:
> 320 °C
Remarks on result:
other: As the test material decomposed, no value for the melting temperature could be determined.

Any other information on results incl. tables

Preliminary testing taken to 400°C had shown a distinct exotherm with a black residue. This confirmed the test material decomposed prior to melting.

Applicant's summary and conclusion

Conclusions:
The test material has been determined to decompose from 320°C at atmospheric pressure
Executive summary:

Method

The determination was carried out by differential scanning calorimetry (DSC) using the procedure specified in ASTM E537-86, Method A1 of Commission Directive 92/69/EEC (which constitutes Annex V of Council Directive 67/548/EEC) and Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Discussion

Preliminary testing taken to 400°C had shown a distinct exotherm with a black residue. This confirmed the test material decomposed prior to melting.

As a result of the low rate of enthalpy change during decomposition, the onset temperature can only be approximated.

Similar thermographic profiles were obtained using air and nitrogen atmospheres; this indicates that the observed decomposition in both determinations is probably thermal and not oxidative.


Conclusion

The test material has been determined to decompose from 320°C. As the test material decomposed, no value for the melting temperature could be determined.