PAN Pesticides Database - Chemical Toxicity Studies on Aquatic Organisms

Acute Aquatic Ecotoxicity Summaries for 2,4-D on Zooplankton

Use(s): Herbicide, Plant Growth Regulator    Chem Class: Chlorophenoxy acid or ester    U.S. EPA PC Code:030001    CAS Number: 94-75-7
Sorted by Organism Group, Scientific Name and LC50. Species summary toxicity data are derived from the U.S. EPA AQUIRE database.
Records 1 to 11 of 11
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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?

Zooplankton

Brine shrimp Artemia salina 402,293 - 1 Not Acutely Toxic  
Rotifer Brachionus calyciflorus 223,592 140,684 6 Not Acutely Toxic  
Rotifer Brachionus plicatilis 598,000 - 1 Not Acutely Toxic  
Water flea Ceriodaphnia dubia 366,083 79,777 6 Not Acutely Toxic  
Water flea Daphnia magna 167,564 124,936 14 Not Acutely Toxic  
Calanoid copepod Eudiaptomus gracilis 144,100 - 1 Not Acutely Toxic  
Scud Gammarus fasciatus 3,200 - 1 Moderately Toxic  
Calanoid copepod Spicodiaptomus chilospinus 2,125 275.0 2 Moderately Toxic  
Protozoa Spirostomum ambiguum 39,900 - 1 Slightly Toxic  
Ciliate Stylonychia mytilus 294,500 190,500 2 Not Acutely Toxic  
Ciliate Tetrahymena pyriformis 500,000 - 1 Not Acutely Toxic  
Records 1 to 11 of 11
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