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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

The EC50 for silver cyanide is predicted to be 0.00056 mg/L. Acute toxicity to Daphnia is predicted using a mixture toxicity approach, based on acute ecotoxicity data for silver and cyanide and speciation predictions for silver cyanide.  

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
0.001 mg/L

Additional information

In order to minimise the need for animal testing a calculation approach has been used in order to determine the acute toxicity of silver cyanide. As a large body of ecotoxicity data is already available for silver and cyanide, the toxicity of silver cyanide is predicted based on the measured values for silver and cyanide and the speciation of the precious metal cyanide substance in the test solution.

The results of the mixture toxicity assessment were validated using measured results for Daphnia. The modelled and measured EC50 values for toxicity of another substance containing silver and cyanide, potassium dicyanoargentate to Daphnia are in excellent agreement (0.0257 mg/L modelled, 0.022 mg/L measured) and therefore the predictions for acute toxicity for silver cyanide are considered to be reliable.