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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Three acute studies covering three trophic levels have been conducted (fish, algae and daphnia) for 5-ethyl-1,3-dioxane-5-methanol. The L(E)C/50 values are provided below:


Fish (zebra fish) = >1000 mg/L

Daphnia = 2466 mg/L

Algae (Pseudokirchneriella subcapitata) = >1000 mg/L


In the chemical safety assessment performed according to Article 14(3) in connection with Annex I section 3 (Environmental Hazard Assessment) no hazard was identified. However to comply with the standard data requirement of REACH Regulation (EC) No. 1907/2006, Annex IX, sections 9.1.6 and 9.1.5 further data needs to be generated on long term toxicity testing. Testing proposals for chronic fish and daphnia toxicity studies has been submitted in the section 6.1.2. and 6.1.4 respectively.