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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

Description of key information

An OECD 209 test guideline study was performed with 1,2,3,6-tetrahydrophthalic anhydride, oligomeric reaction products with 2,2-dimethylpropan-1,3-diol used as read-across chemical.

Key value for chemical safety assessment

EC50 for microorganisms:
1 000 mg/L

Additional information

In an OECD test guideline 209 activated sludge, respiration inhibition test study, the test substance had an EC50 (3h) value greater than 1000 mg/L.