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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From June 1998 to July 1998
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
yes
Type of method:
thermal analysis
Remarks:
differential scanning calorimetry (DSC)
Key result
Decomposition:
yes
Decomp. temp.:
140 °C

Tests were carried out in closed glass pans and in aluminum pans with a hole. No endothermic effect was observed prior to decomposition of the test substance in the range 135–240 °C, with a decomposition energy of 435 J/g. In an aluminum pan an exothermal effect was observable in the range of 30–160 °C. An exothermal decomposition was observed in the range 200–320 °C with a decomposition energy of 748 J/g.

The heat of decomposition was determined to be above 500 J/g.

Conclusions:
Reactive Navy FC63805 has no melting point between 25–450 °C; exothermic decomposition starting at 140 °C was observed.
Executive summary:

The determination of the melting point and the screening test for explosive properties by DSC, were carried out in closed glass pans and in aluminum pans with a hole.

No endothermic effect was observed prior to decomposition of the test substance in the range 135–240 °C, with a decomposition energy of 435 J/g. In an aluminum pan an exothermal effect was observable in the range of 30–160 °C. An exothermal decomposition was observed in the range 200–320 °C with a decomposition energy of 748 J/g.

The heat of decomposition was determined to be above 500 J/g.

Description of key information

The melting point was examined following EU method A.1 in compliance with GLP. The test item decomposes before melting (starting at 140 °C).

Key value for chemical safety assessment

Additional information

The test item has no melting point between 25–450 °C, only exothermic decomposition beginning at 140 °C was observed.