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Physical & Chemical properties

Melting point / freezing point

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Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
no guideline available
Principles of method if other than guideline:
no further information available
GLP compliance:
no
Remarks:
conduct of study prior to implementation of GLP
Type of method:
other: no information available
Key result
Melting / freezing pt.:
>= 174 - <= 176 °C
Remarks on result:
other: no further information available
Conclusions:
According to the available data the melting point range was measured at 174-176 °C.
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
2015-12-08 to 2016-03-07
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Reason / purpose:
reference to other study
Qualifier:
according to
Guideline:
other: OECD Guideline 113 (Screening Test for Thermal Stability and Stability in Air)
Version / remarks:
adopted 12 May, 1981
Deviations:
no
Qualifier:
according to
Guideline:
other: UN recommendations on the transport of dangerous goods: Manual of Tests and Criteria, Rev. 5 (2009) and UN-Model-Regulations, Rev. 19 (2015)
Version / remarks:
2015
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry
Melting / freezing pt.:
>= 160 - <= 190 °C
Atm. press.:
1 013 hPa
Decomposition:
yes
Decomp. temp.:
>= 210 - ca. 500 °C
Sublimation:
no

In the DSC-measurements the test item 2,4-Bismaleimidotoluene showed an endothermic effect in the temperature range of 160-190 °C. An exothermic effect could be observed in the temperature range of 210 - 310 °C with an energy of approximately -180 J/g. A second exothermal effect occurred in the temperature range of 470 to >500 °C with a decomposition energy greater -230 J/g.

Conclusions:
Based on the results of the performed test and on the information of OECD guideline 113, within a DSC measurement an endothermic peak is regarded as melting point of the substance whereas an exothermic peak is regarded as decomposition of the substance. Thus, the substance is considered to melt in a range between 160-190 °C under the conditions of the test.

Description of key information

- Handbook data/collection of data, melting point: 174 -176°C at 1013 hPa.

- study conducted according to OECD guideline 113 (adopted 12 May 1981), differential scanning calorimetry, endothermic peak at 160 -190 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
175 °C

Additional information

According to the available handbook data the melting point range was measured at 174-176 °C. The results from a test conducted according to OECD guideline 113, detecting an endothermic peak in a differential scanning calorimerty (DSC) at 160 -190°C, confirm the handbook data.