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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Captan is acute toxic in aquatic systems with the most sensitive species fish (Salmo trutta LC50 (96 h) = 0,093 mg/L; Oncorhynchus mykiss NOEC(21d) = 0.056 mg/L)) leading to classification as acute toxic in aquatic systems category 1 (H400) according to Annex 1, Chapter 4 of regulation 1272/2008.


For algae based on biomass lower toxicity was observed (Pseudokirchnerella subcapitata EC50 (96 h): 1.6 mg/L; NOEC (96 h): 0.2 mg/L). Even for invertebrates low toxicity was found (Daphnia magna EC50 (48 h) > 7.1 mg/L; NOEC (21 d) = 0.56 mg/L). The effects on aquatic microorganisms are comparable to algae and invertebrate results (STP EC50 (3 h) = 8.2 mg/L); NOEC (3 h) = 0.64 mg/L).

Additional information