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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Long-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

NOEC = 0.91 mg/L (growth rate)

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
0.91 mg/L

Additional information

The long-term effects of NOP (CAS 2687 -94 -7) was studed in a flow-through GLP-test according to OECD guideline 215 (fish, juvenile growth test) using Danio rerio as test species (BASF AG, 2003; report no. 44F0525/015120). The fish were exposed under flow-through conditions. Test concentrations were analytically monitored. The mean recovery was between 53 and 111% of nominal values. After 35 days of exposure a NOEC of 0.91 mg/L was estimated on mean measured concentrations, related to the endpoint growth rate. No mortality, toxic symptoms or abnormalities were observed (35 -d NOEC >= 11.1 mg/L).