Salts & Minerals
REACH
Silver cyanide
CAS Number
506-64-9
EC Number
208-048-6
What is Silver cyanide?
Silver cyanide (CAS 506-64-9) is an inorganic salt used primarily as a source compound in electroplating and metal finishing processes.
Where is Silver cyanide used?
- Electroplating and metal finishing: active silver-bearing reagent in cyanide-based plating baths
- Electronics manufacturing: silver-plated contacts, connectors, and lead frames
- Decorative and functional silverware, jewelry, and flatware: uniform bright silver finishes
- Printed circuit boards: selective silver plating that improves solderability and corrosion resistance on contact surfaces
- Mining and refining operations use this chemistry in hydrometallurgical processes for silver recovery.
Good to know: Purity levels are typically specified at 98% or higher to meet rigorous manufacturing requirements. Handling requires sealed, moisture-resistant containers for safety and stability.
Commercial specifications
- Purity typically 98% or higher
- Packaging from small laboratory quantities to bulk industrial quantities
Other Names (Synonyms)
silver(I) cyanide|Silver cyanide (Ag(CN))|Silver(1+) cyanide|Silver cyanide (Ag2(CN)2)|Silver monocyanide
What are the physical properties of Silver cyanide?
Melting Point 320 °C (decomp)
Density 3,95 g/cm 3
Appearance Silver cyanide is a white or grayish, odorless powder which darkens when exposed to light.
Color White to off-white
Form Powder
Water Solubility insoluble
Refractive Index 1.685
Which trade and regulatory codes apply to Silver cyanide?
HS Code 28432900
UN Number 1684
ADR Class 6.1
Packing Group II
Storage Class 6.1A - Combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
WGK (Germany) 3