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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

The acute toxicity (inhibition of mobility) of the test item N,N’-DIPHENYL THIOUREA for a duration of 48 hours was assessed according to the OECD Guideline 202 under GLP.  The concentration of test item causing a 50% reduction in mobility (EC50) was estimated as follows (geometric mean of measured concentration):
 
EC50-48h = 10.0 mg/L
 

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
10 mg/L

Additional information

The acute toxicity (inhibition of mobility) of the test item N,N’-DIPHENYL THIOUREA for a duration of 48 hours was assessed according to the OECD Guideline 202 under GLP. Daphnia magna were exposed under static conditions to a range of concentrations of N,N’-DIPHENYL THIOUREA dissolved in dilution water. The toxic effect measured during the assay was the inhibition of mobility over time periods of 24 and 48 hours.

The concentration of test item causing a 50% reduction in mobility (EC50) was estimated as follows (geometric mean of measured concentration):

 

EC50-48h = 10.0 mg/L