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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:
15 March 2018
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
Regulation (EC) 440/2008 of 30 May 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
27 July 1995
Deviations:
no
GLP compliance:
no
Remarks:
Non-GLP study.
Type of method:
capillary method
Remarks:
Photocell detection
Key result
Melting / freezing pt.:
> 300 °C
Remarks on result:
other: Mean Value
Melting / freezing pt.:
> 300 °C
Remarks on result:
other: Test 1
Melting / freezing pt.:
> 300 °C
Remarks on result:
other: Test 2

Table 1:       Test Item Melting Point

Test No:

Melting Point ()

1

> 300

2

> 300

Visual assessment following completion of a each test showed unmelted powder which changed from a slight off-white colour to a dark tan colour.

Conclusions:
The test item has a mean melting point of > 300 °C (> 573.15 K).
Executive summary:

EU Method A.1. – The melting point/freezing point of the test item was determined using the capillary method.  The procedure employed was designed to be compatible with Method A.1. Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Aliquots of test item were placed in capillary tubes fused at one end and subjected to heating at a rate of 10 °C/min from a temperature of 215 °C.  Heating was continued to 300 °C.  The test was performed twice.

The mean melting temperature of the test item was established as being > 300 °C.

Description of key information

Melting Point: > 300 °C; EU Method A.1.; D. McSherry (2018)

Key value for chemical safety assessment

Additional information

EU Method A.1. – The melting point/freezing point of the test item was determined using the capillary method.  The procedure employed was designed to be compatible with Method A.1. Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Aliquots of test item were placed in capillary tubes fused at one end and subjected to heating at a rate of 10 °C/min from a temperature of 215 °C.  Heating was continued to 300 °C.  The test was performed twice.

The mean melting temperature of the test item was established as being > 300 °C.