Registration Dossier
Registration Dossier
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EC number: 266-358-7 | CAS number: 66423-13-0
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
With Mecoprop-P n-octyl ester no toxic effects against fish were observed at the limit of water solubility under exposure conditions. The determined 96h-EC50 was >1 mg/L.
For Mecoprop-P acid (MCPP-P acid), the hydrolysis product of Mecoprop-P n-octyl ester, a 96h-LC50 of 76 mg/L and a 96h-NOEC of 42 mg/L were determined.
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 76 mg/L
Additional information
Mecoprop-P n-octyl ester hydrolyses rapidly in natural water. Therefore, the hydrolysis product Mecoprop-P acid (MCPP-P acid) was used for further assessment of Mecoprop-P n-octyl ester with respect to toxicity to fish.
Several studies with various species are available Mecoprop-P acid (MCPP-P acid) and Mecoprop-P dimethylamine salt (MCPP-P DMA). Therefore only those data with most sensitive value available for the hydrolysis product of Mecoprop-P n-octyl ester was chosen for further assessment.
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