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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The 96-h LC50 in freshwater fish calculated using ECOSAR v1.11 for neutral organics is 81 mg/L.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
81 mg/L

Additional information

Giving the physical nature of hexafluoro-1,3-butadiene and due to the difficulty to test it meaningfully, no experimental aquatic results are available. Instead, QSAR methods have been used to estimate the acute toxicity of the substance to aquatic organisms. The effect concentrations of hexafluoro-1,3-butadiene were estimated using ECOSAR v1.11 (2012). The measured log Kow value of 2.24 was used for the predictions.