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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Chronic toxicity data for 3-butyn-1-ol are not available. Tetrahymena pyriformis population growth impairment endpoint was used as a surrogate for fish lethality. Protozoa Tetrahymena pyriformis IGC50 (48 h) = 4,85E+03 mg/L. Available acute toxicity data on fish are all well above 1 mg/L (36 mg/L), indicating that acute toxicity to fish is not expected. However, no data on acute toxicity are available for crustacea and for algae or other aquatic plants. The substance may be degradable (i.e. specific biodegradation data are not available), log Kow is below 4 (0.07, as estimated by EPI suite). Overall, available information is inconclusive for the classification of the substance for acute and chronic aquatic toxicity.