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Canada | Cyanides: Proposed order adding free cyanide, cyanide salts and cyanide complexes to Schedule 1 to the Canadian Environmental Protection Act, 1999

Cyanides - These substances were identified for action under the Chemicals Management Plan (CMP). The ecological portion of the screening assessment used a moiety-based approach that focused on free cyanide [hydrogen cyanide (HCN) and the cyanide anion (CN-)] and precursors of free cyanide. As such, the ecological moiety conclusion includes, but is not limited to, the 10 substances identified in the table below; however, the human health conclusion is limited to those 10 substances.

Substance groupCAS RN (cyanides that met categorization criteria)Common nameDSL name
Cyanides74-90-8Hydrogen cyanideHydrocyanic acid
143-33-9Sodium cyanideSodium cyanide
506-61-6Potassium dicyanoargentateArgentate(1-), bis(cyano-C)-, potassium
13601-19-9Tetrasodium ferrocyanide (yellow prussiate of soda)Ferrate(4-), hexakis(cyano-C)-, tetrasodium, (OC-6-11)
13746-66-2Tripotassium ferricyanideFerrate(3-), hexakis(cyano-C)-, tripotassium, (OC-6-11)-
13943-58-3Tetrapotassium ferrocyanide (yellow prussiate of potash)Ferrate(4-), hexakis(cyano-C)-, tetrapotassium, (OC-6-11)-
13967-50-5Potassium dicyanoaurateAurate(1-), bis(cyano-C)-, potassium
14038-43-8Ferric ferrocyanide (Prussian blue, insoluble)Ferrate(4-), hexakis(cyano-C)-, iron(3+) (3:4), (OC-6-

- Proposed order and RIAS: HTML

- Public comments on the draft screening assessment: HTML

- Final screening assessment: HTML

- Proposed risk management approach: HTML

- Conclusion on section 64 criteria: Meets one or more of the criteria

- Follow-up activities: Refer to proposed risk management approach.



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