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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Boiling point

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Description of key information

Boiling point reported in handbooks: 75.6°C to 76°C
Boiling point reported in authoritative databases: 76°C to 76.1°C

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
76 °C

Additional information

According to the data reported in handbooks and authoritative databases, Thionyl chloride exhibits a boiling point of 75.6°C to 76.1°C at normal atmospheric pressure (default assumption in case pressure conditions were not reported). A boiling point of 76°C was retained as key value as it was the value most frequently encountered in the consulted handbooks and databases. Besides, this value is consistent with available secondary data which report a boiling point of 73°C to 78.8°C for Thionyl chloride.