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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

Saltwater: S maximus (96hr LC50): >1800mg/l

Key value for chemical safety assessment

Marine water fish

Marine water fish
Effect concentration:
1 800 mg/L

Additional information

In a guideline (OECD 203) GLP study modified to marine conditions, the 96 -hour LC50 of a commercial substance that meets the description "Poly(oxy-1,2,-ethanediyl), α-butyl, ω-hydroxyl" to Turbot was determined to be >1800 mg/L.  Based on the information available, this substance would be not be classified toxic to the environment according to the classification system of the EU.

It should be noted that the ECOSAR predicts a decrease in toxicity with increasing number of ethylene oxide units. The QSAR predicts that 2-(2-(2-(2-butoxyethoxy)ethoxy)ethoxy)ethanol will have an LC50 twice as high as 2-(2-(2-butoxyethoxy)ethoxy)ethanol.