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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

Acute tests on all three trophic levels were performed to examine the aquatic toxicity of HDDA.

Fish turned out to be the most sensitive specieas revealing an LC50 (96h) of 0.38 mg/L, whereas EC50s of 2.7 mg/L (48h) for Daphnia and 2.3 mg/L (72h, based on growth rate) for Algae have been obtained.

Furthermore, results from chronic aquatic testing covering three trophic levels are available for HDDA. Again, fish showed highest sensitivity (NOEC = 0.0723 mg/L), followed by Daphnia (NOEC = 0.14 mg/L based on reproduction) and Algae (NOEC = 0.9 mg/L)

Thus, HDDA is considered acutely very toxic for aquatic organisms and toxic to aquatic life with long lasting effects.