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Physical & Chemical properties

Flash point

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Description of key information

As 4,4'-MDI is a solid under room temperature, no flashpoint study is needed.

Key value for chemical safety assessment

Additional information

When 4,4'-MDI is heated a bit above room temperature, it becomes a liquid. Hence, a flashpoint could be determined of liquid 4,4'-MDI. The flashpoint determined is 211 degrees Celsius at 1000 hPa according to EU Method A.9 (Fisk and Langner, 1995). The Pensky-Martens closed cup was used.