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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Link to relevant study record(s)

Description of key information

An OECD 201 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 freshwater algae:
33.2 mg/L
EC10 or NOEC for freshwater algae:
25 mg/L

Additional information

In an OECD test guideline 201 acute Algae study, the test substance had an EC50 value of 33.2 mg/L. The NOEC value for this acute algae study was 25 mg/L.