Registration Dossier

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.