Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
September 30 - October 4, 2005
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Remarks:
standard operating procedure of test institute

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2006
Report Date:
2006

Materials and methods

Principles of method if other than guideline:
Differential thermal analysis (DTA)
Type of method:
differential scanning calorimetry
Remarks:
DTA

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Melting / freezing point
Decomposition:
yes
Decomp. temp.:
300 °C
Remarks on result:
other: temperature refers to the onset temperature
Remarks:
no melting recorded

Any other information on results incl. tables

The exothermal decomposition reaction shows an onset at 325.06 °C and a peak at 329.24 °C in the sharp DTA curve, the reaction energy of the decomposition was -661 J/g.

The onset temperature for the exothermal reaction in all three measurements was identified as 300 °C (taken here as decomposition temperature), reaction energies of the two further runs: -580 J/g, -720 J/g.

No discernible endothermal reaction (melting) was seen in the DTA.

Applicant's summary and conclusion

Executive summary:
The DTA shows decomposition starting at 300 °C without discernible melting prior to decomposition. The determined decomposition energy is 661 J/g.