Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Tetrahydromethylphthalic anhydride (MTHPA) is rapidly hydrolytically degraded in a few minutes and thoroughly hydrolyzed to the corresponding dicarboxylic acids. These hydrolysis products are not readily biodegraded.

Based on the physical/chemical parameters Tetrahydromethylphthalic anhydride (MTHPA) has a low potential for bioaccumulation and can be expected to have a low potential for adsorption (the substance has a low octanol water partition coefficient of 2.38-2.51 as calculated by EPIWIN).