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).

Cyanides,substance,Canada

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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