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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2020-08-26 - 2021-01-14
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
thermal analysis
Melting / freezing pt.:
>= -62 - <= -50 °C
Sublimation:
no
Remarks on result:
other: Pressure not reported.

During the measurement there was an endothermic effect in the range between -62 °C and -30 °C which is supposed to be a melting range. 
The melting curve of the sample should be a steep endothermic signal. Instead of a steep signal an endothermic range was detected between approx. -62 °C and -50 °C. This range could be reproduced in the repetition. The residue is a bright-yellow liquid.

Conclusions:
During the measurement there was an endothermic effect in the range between -62 °C and -30 °C which is supposed to be a melting range.
Executive summary:

Result:


The melting point of the test substance was determined using Differential Thermal Analysis (DTA) / Differential Scanning Calorimetry (DSC) according to OECD TG 102.
During the measurement there was an endothermic effect in the range between -62 °C and -30 °C which is supposed to be a melting range. No other effects were measured until the temperature of approx. 220 °C is reached. Between approx. 220 °C and approx. 320 °C an exothermic effect was visible.

Description of key information

The melting point of the test substance was determined using Differential Thermal Analysis (DTA) / Differential Scanning Calorimetry (DSC) according to OECD TG 102.
During the measurement there was an endothermic effect in the range between -62 °C and -30 °C which is supposed to be a melting range. No other effects were measured until the temperature of approx. 220 °C is reached. Between approx. 220 °C and approx. 320 °C an exothermic effect was visible.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-50 °C

Additional information