Registration Dossier
Registration Dossier
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EC number: 203-308-5 | CAS number: 105-55-5
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The acute toxicity of N,N’-DIETHYL THIOUREA was evaluated with Daphnia magna in a study performed in accordance with OECD testing guideline 202 and GLP requirements. EC50-48 h was estimated using nominal concentrations as being equal to 56 mg/L.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Dose descriptor:
- EC50
- Effect concentration:
- 56 mg/L
Additional information
The acute toxicity of N,N’-DIETHYL THIOUREA was evaluated with Daphnia magna in a study performed in accordance with OECD testing guideline 202 and GLP requirements.
The young daphnids were exposed to nominal test concentrations between 10.2 and 150 mg/L under static conditions during 48 hours. The mean measured concentrations were maintained between 80 and 120 % of nominal. EC50-48 h was estimated using nominal concentrations as being equal to 56 mg/L.
Mortality in control, temperatures, pH range and dissolved oxygen concentration were reported and in agreement with the guideline requirements.
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