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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 407-870-4 | CAS number: 97384-48-0 CITROWANIL B
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The EC50 of Citrowanil B for the daphnia toxicity is 12 mg/l after 48 h.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 12 mg/L
Additional information
One valid experiment was performed under flow-through conditions
The main study was performed using five concentrations ranging from 2.2 – 46 mg/L. Twenty daphnia were exposed to the test item for 48 hours. After 24 and 48 hours, the immobilised daphnia were counted.
Only 5 % of the animals were immobilised in the control.
At the beginning, after 24 hours and at the end of the test, the content of the test item in the test solutions was determined using a validated HPLC method.
The correlation between nominal and measured concentration was acceptable with the exception of unexpectedly high measured values at the beginning and after 24 hours in treatments 22 mg/L and 46 mg/L. Therefore, the determination of the biological results was based on the geometric mean of the measured concentrations.
All quality control criteria were met. The 24h-EC50iof potassium dichromate was tested as positive control. The value was determined as 1.7 mg/L, lying within the demanded range of 0.6 – 1.7 mg/L.
The following results were determined for CITROWANIL B (species:Daphnia magna).
24h-NOEC = 3.6 mg/L
48h-NOEC = 1.7 mg/L
24h-EC50i= 28 mg/L
48h-EC50i= 12 mg/L
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
