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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

LC50 (96 hr) rainbow trout: 164 mg/L (Thorpe 1978)

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
164 mg/L

Additional information

There are two separate studies available for this end-point, one of which is for two separate species of fish, and the results of these are as follows:

LC50 (96 hr) Guppies & Harlequin fish: 250 – 500 ppm (Brown & Hubble 1969).

LC50 (96 hr) rainbow trout:164 mg/L (Thorpe 1978).

Both of the studies are considered a Reliability 2 and therefore the Thorpe study has been chosen as the Key Study as this has the lowest LC50, hence it can be considered as worst-case.