Registration Dossier
Registration Dossier
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EC number: 217-915-8 | CAS number: 2008-39-1
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
The LC50 for fishes exposed to dimethylammonium 2,4-dichlorophenoxyacetate was determined to be 326 mg test material/L (168.14 mg a.i./L)
Key value for chemical safety assessment
Additional information
The acute toxicity of dimethylammonium 2,4-dichlorophenoxyacetate (CAS No. 2008-39-1) to fish species was investigated in a study (Raszka, 1995). This test was conducted according to OECD Guideline No. 203: Fish, Acute Toxicity Test (1992). The test organisms (Cyprinus carpio) were exposed to this substance for 96 hours under static water conditions. In the study a LC50 of 326 mg test substance/L (corresponding to 168 mg a.i./L) is reported. Other authors (Bogers and Enninga, 1990; European Comission, 2001) found similar values, testing this substance and its main degradation product (2,4 -dichlorophenoxyacetic acid) in Oncorhynchus mykiss,Cyprinus carpio and Pimephales promelas under comparable conditions (OECD Guideline 203, EPA/FIFRA E 72-3), obtaining LC50 values of 240 a.i., 560-1000 a.i., and 100 mg a.i./L respectively.
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