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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Based on the read-across approach from the analogue substance MPKO, the 96h-EC50 of OS9600 in Rainbow trout was determined to be >134 mg/L. The NOEC was 134 mg/L since no mortality or signs of toxicity were observed for 96 hours.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
134 mg/L

Additional information

Key study: Read-across approach from experimental data on the analogue substance MPKO:

A short-term toxicity test on fish was performed according to the OECD Guideline 203 (GLP study). Based on the read-across approach from the experimental data obtained with the analogue substance MPKO, the hydrolysis product of OS9600 (96h-LC50 in Rainbow trout (Oncorhynchus mykiss) > 100 mg/L and the 96h-NOEC = 100 mg/L), the 96h-LC50 for OS9600 was determined to be >134 mg/L and 96h-NOEC = 134 mg/L for fish.