PAN Pesticides Database - Chemical Toxicity Studies on Aquatic Organisms

Acute Aquatic Ecotoxicity Summaries for Metolachlor on All Taxa Groups

Use(s): Herbicide    Chem Class: Chloroacetanilide    U.S. EPA PC Code:108801, 288700    CAS Number: 51218-45-2
Sorted by Organism Group, Scientific Name and LC50. Species summary toxicity data are derived from the U.S. EPA AQUIRE database.
Records 1 to 16 of 16
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Common Name Scientific Name Avg Species LC50 (ug/L) LC50 Std Dev Number of Studies Avg Species Rating Outlier Result for Organism Group?

Amphibians

Bullfrog Rana catesbeiana 18,000 4,183 4 Slightly Toxic  
Clawed toad Xenopus laevis 1,360,018 - 1 Not Acutely Toxic  

 
Cnidaria

Hydra Hydra attenuata 45,000 - 1 Slightly Toxic  

 
Fish

Crucian carp Carassius carassius 4,900 - 1 Moderately Toxic  
Sheepshead minnow Cyprinodon variegatus 8,850 950.0 2 Moderately Toxic  
Channel catfish Ictalurus punctatus 4,900 - 1 Moderately Toxic  
Bluegill Lepomis macrochirus 10,000 - 1 Slightly Toxic  
Coho salmon,silver salmon Oncorhynchus kisutch 13,250 4,603 4 Slightly Toxic  
Rainbow trout,donaldson trout Oncorhynchus mykiss 12,980 4,976 5 Slightly Toxic  
Chinook salmon Oncorhynchus tshawytscha 21,250 13,160 4 Slightly Toxic Outlier 
Fathead minnow Pimephales promelas 8,200 200.0 2 Moderately Toxic  
Guppy Poecilia reticulata 2,882 4,043 3 Moderately Toxic  

 
Insects

Midge Chironomus riparius 13,282 - 1 Slightly Toxic  

 
Zooplankton

Opossum shrimp Americamysis bahia 4,900 - 1 Moderately Toxic  
Water flea Daphnia magna 46,500 33,500 2 Slightly Toxic  
Scud Hyalella azteca 6,000 - 1 Moderately Toxic  
Records 1 to 16 of 16
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