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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 221-255-6 | CAS number: 3047-33-4
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
Read-across from an acute earthworm toxicity test according to OECD Guideline 207 with the monosodium salt of cyanuric acid.
Key value for chemical safety assessment
- Short-term EC50 or LC50 for soil macroorganisms:
- 1 282.8 mg/kg soil dw
Additional information
A study was performed to assess the acute toxicity of the monosodium salt of cyanuric acid to earthworms (Eisenia foetida) in an artificial soil (Goodband 2007). 60 earthworms (six replicates of 10 worms) were exposed to a single concentration of 1000 mg test material/kg of dry soil for a period of 14 days. The number of mortalities was determined after 7 and 14 days exposure. The 14 day LC50 for the test material based on nominal test concentrations was > 1000mg test material/kg dry soil (equivalent to 756 mg cyanuric acid/kg dry soil). The NOEC was 1000 mg test material/kg dry soil (equivalent to 756 mg cyanuric acid/kg dry soil).
Read-across:
1. Based on the experimental results obtained with the analogue monosodium salt of cyanuric acid (14 d-LC50 > 1000 mg/kg soil dw ; 14d-NOEC = 1000 mg/kg soil dw) and the molecular weights, the read-across approach is applied and the 14d-LC50 and 14d-NOEC for substance trisodium cyanurate are calculated to be higher than 1282.8 mg/L and 1282.8 mg/L, respectively.
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.
