Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Testing was conducted between 26 March 2007 and 05 May 2007.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted to GLP and in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not effect the quality of the relevant results.

Data source

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

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
other: Differential scanning calorimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Sponsor's identification: C-Y9
Description: yellow powder
Lot number: MB-l
Date received: 06 March 2007
Storage conditions: room temperature, in the dark, over silica gel

Results and discussion

Melting / freezing point
Melting / freezing pt.:
> 350 °C
Remarks on result:
other: Decomposition from 350 °C

Any other information on results incl. tables

Thermographic Data - Determination 1:

Onset of decomposition: 350.29°C (623 K)

Extrapolated onset of decomposition: 370.22°C (643 K)

Peak decomposition: 380.72°C (654 K)

Thermographic Data - Determination 2:

Onset of decomposition: 350.17°C (623 K)

Extrapolated onset of decomposition: 372.80°C (646 K)

Peak decomposition: 380.72°C (656 K)

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.

The test material has been determined to decompose from 623 ± 0.5 K. As the test material decomposed, no value for the melting temperature could be determined.

Applicant's summary and conclusion

Conclusions:
The test material has been determined to decompose from 623 ± 0.5 K. As the test material decomposed, no value for the melting temperature could be determined.
Executive summary:

MeltinglFreezing Temperature.

Decomposed from 623 ± 0.5K.As the test material decomposed, no value for melting temperature could be determined, by differential scanning calorimetry, using ASTM E537-86, Method Al of Commission Directive 92/69/EEC and Method 102 of the DECD Guidelines for Testing of Chemicals, 27 July 1995.