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Physical & Chemical properties

Boiling point

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Description of key information

The sublimation point of acetylene is -84.7°C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
-84.7 °C

Additional information

In accordance with column 2 of REACH Annex VII, the boiling point study does not need to be conducted as this substance is a gas. As published data are available they have been included in the dossier. The CRC Handbook (Lide 2008) is peer reviewed and is considered reliable and suitable for use for this endpoint. The second study (WHO 2003) is also a peer reviewed source and reports a value of -85°C (188.15 K) and supports the value reported in the CRC Handbook.

The boiling point is reported as a sublimation point.