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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:
04 July 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
Commission Regulation (EC) No 440/2008 of 30 May 2008 laying down test methods pursuant to Regulation (EC) No 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), Method A.1, Official Journal of the European Union L 142 of 31 May 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
Organisation for Economic Co-operation and Development (OECD), Guidelines for Testing of Chemicals, Guideline No. 102, “Melting Point / Melting Range”; adopted July 27, 1995
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
capillary method
Specific details on test material used for the study:
No further details specified in the study report.
Key result
Melting / freezing pt.:
> 69.4 - < 83.1 °C
Decomposition:
no
Sublimation:
no
Remarks on result:
other: Atm. press. not specified

Measured temperatures corresponding to the melting of the test item (three experiments (I, II, III) with three parallel samples each (1, 2, 3)

 

Measured Temperatures during the Main Study (°C)

I / 1

I / 2

I / 3

II / 1

II / 2

II / 3

III / 1

III / 2

III / 3

Mean

Beginning of melting

69.4

69.4

69.4

69.3

69.4

69.4

69.4

69.4

69.4

69.4 ± 0.03

Final stage of melting

83.1

83.1

83.1

83.1

83.0

83.1

83.0

83.1

83.1

83.1 ± 0.03

 

Conclusions:
Using a linear heating rate of 0.5°C/min, the melting range of AMINOX® was found to be 69.4 – 83.1°C ± 0.03°C, same time the test item started to turn brown continuously at about 70°C.
Executive summary:

For the determination of the melting point or melting range, the capillary method using a metal block was applied. Using a linear heating rate of 0.5 °C/min, the melting range of AMINOX® was found to be 69.4 – 83.1 °C ± 0.03 °C (95% confidence interval), i.e. 342.5 – 356.2 K, same time the test item started to turn brown continuously at about 70 °C.

Description of key information

The melting range of AMINOX® was found to be 69.4 – 83.1 °C ± 0.03 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
69.4 °C

Additional information

For the determination of the melting point or melting range, the capillary method using a metal block was applied. Using a linear heating rate of 0.5 °C/min, the melting range of AMINOX® was found to be 69.4 – 83.1 °C ± 0.03 °C (95% confidence interval), i.e. 342.5 – 356.2 K, same time the test item started to turn brown continuously at about 70 °C.