Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Potassium cyanate is hydrolyzed to ammonia and potassium bicarbonate under environmentally relevant conditions.

Based on the results of the preliminary test the hydrolysis rate of potassium cyanate was found to be 47 % at pH 9 after 5 days at 50 °C. Hydrolysis rates at pH 4 and pH 7 were approximately 100 %. From a water solubility study with the structural analogue sodium cyanate a DT50 of 13 d at 12 °C could be extrapolated. this value is used as worst case value in the risk assessment.