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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicity to birds

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Administrative data

Link to relevant study record(s)

Description of key information

LD50 (Red-Winged Blackbird) = 75 mg/kg-bw

NOEC (Quail, male) = 56.2 mg/kg-bw based on fertility of eggs from female mate.

Key value for chemical safety assessment

Additional information

Avian testing is not needed due to the large mamallian dataset available on 1,4-Butynediol and based on a measured LD50 of 75 mg/kg-bw (Schafer, et. al., 1983) for red-winged blackbirds (Agetaius phoeniceus) and a NOEC of 56.2 mg/kg-bw for male quail based on the fertility of eggs from female mates (Schafer, et. al., 1982).