Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The toxicity of 1,4 -Butynediol to aquatic organisms has been studied according to a number of reliable guideline methods under non-GLP conditions. The results of these studies indicate that 1,4 -Butynediol exhibits a moderate degree of toxicity in the aquatic environment, with a 48 hour EC50 in invertebrates (Daphnia magna) of 26.8 mg/L (BASF, 1987) and a 96 hour LC50 in freshwater fish (Pimephales promelas) of 53.6 mg/L (Veith, et. al., 1989).