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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Flash point

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Administrative data

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Description of key information

Flash point was determined as 164 degree C at 1003 hPa measured by the closed cup method.

Key value for chemical safety assessment

Flash point at 101 325 Pa:
437.2 K

Additional information

Flash point of tetrahydromethylphthalic anhydride (MTHPA) was tested in line with ASTM D 3278 and determined as 164 degree C at 1003 hPa by the closed cup method.