Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 203-308-5 | CAS number: 105-55-5
Endpoint summary
Administrative data
Description of key information
Additional information
- fish: LC50-96h = 910 mg/L
- algae: EC50-72h = 310 mg/L (based on specific growth rate)
- daphnia: EC50-48h = 56 mg/L
Due to its octanol-water partition coefficient (log P = 0.57) 1,3-diethyl-2-thiourea is not expected to adsorb to soil or sediment and will mainly be present in the aqueous phase.
DETU has been shown to be not toxic to fish and algae and harmful to daphnia in several acute studies:
Two chronic data are also available:
daphnia: EC10 -21d = 1.67 mg/L (based on reproduction)
algae: NOEC-72h = 73 mg/L (based on specific growth rate)
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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