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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 209-162-9 | CAS number: 557-21-1
Endpoint summary
Administrative data
Description of key information
Abiotic degradation / hydrolysis
Zinc cyanide is insoluble in water (see section 4.8 of this IUCLID). According to the column 2 of the annex VII section 7.3 of Regulation (EC) No 1907/2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), the study does not need to be conducted if the substance is highly insoluble in water. Therefore, this endpoint is waived.
Biodegradation in water: screening test, Biodegradation in water and sediment, Biodegradation in soil
In accordance with column 2 of REACH Regulation (EC) No 1907/2006, Annex VII, section 9.2.1.1, a Biodegradation test does not need to be conducted as the test substance is an inorganic substance.
Adsorption/ desorption
In accordance with column 2 of REACH Regulation (EC) No 1907/2006, Annex VIII, section 9.3.1, the test on adsorption/desorption screening does not need to be conducted as the substance copper cyanide can be expected to have a low potential for adsorption based on the octanol water partition coefficient. The theoretical, calculated log Pow was - 2.31 (estimated with KOWWIN v1.68), i.e. very low, as expected for an inorganic substance (see section 4.7).
Nevertheless, for CSA purposes, a value must be provided. Since there are no experimental value for this endpoint, estimated values have been generated by QSAR Methods, using KOCWIN v2.0 and TGD default QSAR).
ECHA Guidance (chapter R.7.a,paragraph R.7.1.15) recommends calculating the Koc endpoint value as the geometric mean of results obtained by means of QSARs.
Geometric mean of koc = 1.81 L/kg. This geometric mean value is used as input parameter for Environmental Risk Assessment.
Additional information
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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