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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Bioaccumulation: aquatic / sediment

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Administrative data

Link to relevant study record(s)

Description of key information

Bioaccumulation: not determined

Key value for chemical safety assessment

Additional information

Under environmental conditions, the log Kow of both 1,2,3,6-tetrahydro-3-methylphthalic anhydride (3-MTHPA D4) and the corresponding dicarboxylic acid 3-methylcyclohex-4-ene-1,2-dicarboxylic acid (3-MTHPAc D4) is below 3.

It is therefore concluded that the potential for bioaccumulation of 3-MTHPA D4 and 3-MTHPAc D4 is very low.