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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Ecotoxicological information

Short-term toxicity to fish

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Additional information

In a study from Brooke et al. (1984) a 96h LC50 of 61 mg/l has been determined for the effects of furan on mortality of the freshwater fish Pimephales promelas, based on measured concentrations. Another short-term study reports a 48 h EC50 value of 71 mg/l on behaviour and equilibrium effects of furan on P. promelas (Call. et al. 1981, as cited in US EPA database). The Japanese Ministry of Environment (MoE, 2009) reports a 96 h LC50 value of >120 mg/L with Oryzias latipes.


Brooke, L.T., Call, D.J. Geiger, D.L. and Northcott, C.E. (1984) Acute Toxicities of Organic Chemicals to Fathead Minnows (Pimephales promelas), Vol. 1,Center for Lake Superior Environmental Studies, University of Wisconsin-Superior, Superior, WI; p.414

MOE - Ministry of Environment (2010a) Acute toxicity to fish. Study number 95035. Report number: 662 -09 -E-5035. Report date: 2010-02-12. No further details on the source are available because the source is in Japanese.

US EPA ECOTOX online Database System. Accessed via