Registration Dossier
Registration Dossier
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EC number: 217-175-6 | CAS number: 1762-95-4
Toxicity to terrestrial arthropods
Administrative data
Link to relevant study record(s)
Description of key information
The key value for risk assessment is based on a literature study with the wireworm with an LC50 of 6336 mg/kg soil dw.
Key value for chemical safety assessment
- Short-term EC50 or LC50 for soil dwelling arthropods:
- 6 336 mg/kg soil dw
Additional information
There is one well described literature study (KSCN) with the wireworm (Limonius californicus). The wireworm study has been previously used to determine a PNEC value for soil, based on its close agreement with the background concentrations of SCN- in soil (~8 m/kg soil dw) (RIVM report 711701020, Ecotoxicological serious risk concentrations for soil, sediment and groundwater: updated proposals for first series of compounds; R. Posthumus and E.M.J. Verbruggen)). Because of the high LC50 obtained, this study is preferentially chosen to calculate the PNEC value, because it sets a higher upper limit that soil organisms can tolerate.
The results of the chemical safety assessment indicate no risk for the soil compartment. Additionally, according to the REACH TGD Chapter R.7c, requests for further information can be waived if log Kow < 5 and the compound is readily biodegradable. Ammonium thiocyanate is readily biodegradable in the OECD 301D closed bottle test (80%), and all the three thiocyanates have log Kow < 5. Based on this information, provision of especially data from long term tests is not necessary.
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.
