10 February 2018, Canada publishes a proposal to amend Domestic Substance List, adding ten cyanide compounds to Schedule 1 of the Canadian Environmental Protection Act (CEPA).
The substance is as follows:
CAS RN DSL name Common name 74-90-8 Hydrocyanic acid Hydrogen cyanide (HCN) 143-33-9 Sodium cyanide Sodium cyanide 506-61-6 Argentate(1-), bis(cyano-c)-, potassium Potassium dicyanoargentate 13601-19-9 Ferrate(4-), hexakis(cyano-c)-,
tetrasodium, (oc-6-11) Tetrasodium ferrocyanide (yellow
prussiate of soda) 13746-66-2 Ferrate(3-), hexakis(cyano-c)-,
tripotassium, (oc-6-11)- Tripotassium ferricyanide 13943-58-3 Ferrate(4-), hexakis(cyano-c)-,
tetrapotassium, (oc-6-11)- Tetrapotassium ferrocyanide 13967-50-5 Aurate(1-), bis(cyano-c)-, potassium Potassium dicyanoaurate 14038-43-8 Ferrate(4-), hexakis(cyano-c)-, iron(3+)
(3:4), (oc-6-11)- Ferric ferrocyanide (Prussian blue,
insoluble) 25869-00-5 Ferrate(4-), hexakis(cyano-c)-, ammonium
iron(3+) (1:1:1), (oc-6-11)- Ferric ammonium ferrocyanide 25869-98-1 Ferrate(4-), hexakis(cyano-c)-, iron(3+)
potassium (1:1:1), (oc-6-11)- Potassium ferric ferrocyanide (Prussian
blue, soluble or Turnbull’s blue)
The ecological exposure assessment for cyanides focuses on potential releases of free cyanide from three main sectors of activity: metal mining, iron and steel manufacturing, and application of ferrocyanide-containing road salts. These cyanides are harmful to human health and environmental organisms. The proposed risk management plan proposes cutting in half the allowable release of cyanides from mining under the Metal Mining Effluent Regulations.
Any person may comment within 60 days after publication of this notice.
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