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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Description of key information

The boiling point of hex-3-yne-2,5-diol is 231.8 °C at 1013.25 hPa

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
231.8 °C

Additional information

A GLP study was conducted. The study in accordance with the OECD Guideline for the Testing of Chemicals 104: "Vapour pressure" by dynamic method determined the vapour pressure. The normal boiling point was obtained from the vapour pressure curve to be 231.8 °C at 1013.25 hPa.

This was supported by a non-GLP study which determined the boiling point also to be 231.8 °C at 1013.25 hPa (760 Torr).