Sodium cyanide

CAS Number
143-33-9
EC Number
205-599-4

What is Sodium cyanide?

Sodium cyanide (CAS 143-33-9), also sold under the trade names Cymag and Cyanogran, is an inorganic salt used primarily as a chemical reagent and processing agent in mining, metal finishing, and chemical synthesis.

Where is Sodium cyanide used?

  • Gold and silver mining: primary lixiviant in heap leach and tank leach circuits, selectively dissolving precious metals from ore for downstream recovery
  • Electroplating and metal finishing: complexing agent in copper, zinc, and cadmium bath formulations to control deposition quality
  • Pharmaceutical manufacturing: building block in synthesizing nitrile intermediates and other nitrogen-containing active pharmaceutical ingredients
  • Organic synthesis: cyanide source in nucleophilic addition reactions to produce specialty chemicals and polymer precursors
  • Its ability to form stable complexes with metals drives its role in extractive and surface treatment processes.

Good to know: Handling requirements are governed by strict regulatory frameworks in most jurisdictions.

Commercial specifications

  • Technical grade, purity typically 98% or higher
  • Bulk packaging for large-scale industrial procurement

Other Names (Synonyms)

sodium salt of hydrocyanic acid|Cymag|Cyanogran|Cyanide of sodium|NaCN|Sodium cyanide (Na(CN))|Cyanasalt H|Cyanasalt S

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How is Sodium cyanide classified and handled safely? Learn More

Danger
GHS05· Corrosive GHS06· Toxic GHS07· Irritant GHS08· Health Hazard GHS09· Environmental Hazard

Hazard Statements

H300 Fatal if swallowed [Danger Acute toxicity, oral]
H310 Fatal in contact with skin [Danger Acute toxicity, dermal]
H316 Causes mild skin irritation [Warning Skin corrosion/irritation]
H319 Causes serious eye irritation [Warning Serious eye damage/eye irritation]
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