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Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
July 09, 2018 - July 10, 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Version / remarks:
European Commission Regulation (EC) No. 440/2008
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Decomposition:
yes
Decomp. temp.:
ca. 180 °C

The DSC measurement up to 500°C showed after the melting (132 - 136 °C) an exothermal effect in the temperature range of 180 - 250 °C. A further endothermic effect was observed in the temperature range of 360 - 460 °C. The mass loss after the DSC measurement amounted to 33 %. lt was concluded that the test item had no boiling point at atmospheric conditions, as decomposition started at approx. 180 °C, before boiling could occur.

Conclusions:
The test item had no boiling point at atmospheric conditions. Decomposition started at approx. 180 °C, before boiling could occur.
Executive summary:

A study was conducted according to OECD test guideline 103 and Regulation (EC) No 440/2008 method A.2 to determine the boiling point of the test item using differential scanning calorimetry. The test item and the reference are heated up from the starting temperature to the final temperature at a constant heating rate in a defined atmosphere (nitrogen). The DSC measurement up to 500°C showed after the melting (132 - 136 °C) an exothermal effect in the temperature range of 180 - 250 °C. A further endothermic effect was observed in the temperature range of 360 - 460 °C. The mass loss after the DSC measurement amounted to 33 %. lt was concluded that the test item had no boiling point at atmospheric conditions, as decomposition started at approx. 180 °C, before boiling could occur.

Description of key information

lt was concluded that the test item had no boiling point at atmospheric conditions, as decomposition started at approx. 180 °C, before boiling could occur.

Key value for chemical safety assessment

Additional information

A study was conducted according to OECD test guideline 103 and Regulation (EC) No 440/2008 method A.2 to determine the boiling point of the test item using differential scanning calorimetry. The test item and the reference are heated up from the starting temperature to the final temperature at a constant heating rate in a defined atmosphere (nitrogen). The DSC measurement up to 500°C showed after the melting (132 - 136 °C) an exothermal effect in the temperature range of 180 - 250 °C. A further endothermic effect was observed in the temperature range of 360 - 460 °C. The mass loss after the DSC measurement amounted to 33 %. lt was concluded that the test item had no boiling point at atmospheric conditions, as decomposition started at approx. 180 °C, before boiling could occur.