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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:
2002-01-09 to 2002-01-23
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
, 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
92/69/EEC (1992)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
,signed 1999-05-25
Type of method:
capillary method
Melting / freezing pt.:
> 500 °C
Decomposition:
yes
Decomp. temp.:
350 °C
Sublimation:
no
Remarks on result:
other: no melting up to 500 °C

Results

No melting was observed. Following observations were made:

- 350 °C strong colour change

- 410 °C lower side becomes darker

- 437 °C substance changes to intensive yellow

- 450 °C substance changes to pale okker

- 456 °C substance changes increasingly (brownish)

- 466 °C substance changes to brown

- 498 °C substance becomes darker, no melting

Conclusions:
The test item has no melting point up to 500 °C, the decomposition starts at 350 °C.

Description of key information

The test item has no melting point up to 500 °C, the decomposition starts at 350 °C.

Key value for chemical safety assessment

Additional information