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:
other: Valid method

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:
thermal analysis
Remarks:
DTA

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Melting / freezing point
Decomposition:
yes
Decomp. temp.:
300 °C

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 DTA curve, the reaction energy of the decomposition being -661 J/g (results from one DTA curve).

The onset temperature for the exothermal reaction in all three measurements was identified as 300 °C (taken here as decomposition temperature), reaction energies ranging between -580 J/g and -720 J/g.

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

Applicant's summary and conclusion

Conclusions:
Decomposition starts without discernible melting, the decomposition temperature is 300 °C.
Executive summary:
The DTA shows decomposition starting at 300 °C without discernible melting prior to decomposition.