We unleash your business potential by maximize the business innovation.
Send EmailSilver Cyanide, 506-64-9
| Parameter | Description |
|---|---|
| Chemical Name | Silver cyanide |
| Other Names | Silver(I) cyanide, AgCN |
| CAS Number | 506-64-9 |
| EC Number (EINECS) | 208-046-1 |
| Chemical Formula | AgCN |
| Molecular Weight | 133.89 g/mol |
| Chemical Class | Inorganic cyanide salt / Transition metal cyanide |
| Appearance | White to yellowish crystalline solid |
| Odor | Faint almond-like odor (cyanide ion) |
| Density | ~5.6 g/cm³ |
| Melting Point | Decomposes (no distinct melting point) |
| Solubility in Water | Very slightly soluble |
| Complex Solubility | Soluble in excess cyanide (forms [Ag(CN)₂]⁻ complex) |
CHEMICAL STRUCTURE AND DESCRIPTION:
Silver Cyanide (AgCN) is the cyanide salt of silver in the +1 oxidation state. It consists of a silver ion (Ag⁺) and a cyanide ion (CN⁻). It is very slightly soluble in water but dissolves readily in the presence of excess cyanide ions by forming the [Ag(CN)₂]⁻ complex. This complex formation makes silver cyanide valuable in the electroplating industry. It is used in silver plating baths, in electronic and surface finishing applications, and in special analytical chemistry applications. Due to the presence of cyanide ions, it is extremely toxic.
Structural Features:
Silver ion in +1 oxidation state
One cyanide ligand
Very slightly soluble in water
Forms [Ag(CN)₂]⁻ complex with excess cyanide
Light sensitive
| Property | Value |
|---|---|
| Chemical Formula | AgCN |
| Molecular Weight | 133.89 g/mol |
| Appearance | White to yellowish crystalline solid |
| Odor | Faint almond-like odor |
| Density | ~5.6 g/cm³ |
| Melting Point | Decomposes (no distinct melting point) |
| Solubility in Water | Very slightly soluble |
| Solubility in Organic Solvents | Insoluble |
| Complex Solubility | Soluble in KCN or NaCN ([Ag(CN)₂]⁻ complex) |
| Light Sensitivity | Light sensitive |
| Solvent | Solubility |
|---|---|
| Water | Very slightly soluble |
| Cyanide Solutions (KCN, NaCN) | Soluble ([Ag(CN)₂]⁻ complex) |
| Organic Solvents | Insoluble |
| Acids | Reacts (releases HCN gas) |
| Property | Description |
|---|---|
| Chemical Class | Inorganic cyanide salt / Transition metal cyanide |
| Water Solubility | Very slight |
| Complex Formation | Forms [Ag(CN)₂]⁻ complex with excess CN⁻ |
| Reaction with Acids | Releases HCN gas (EXTREMELY TOXIC) |
| Light Sensitivity | Light sensitive |
| Thermal Decomposition | Decomposes upon heating |
Key Reactions:
Complex Formation:
AgCN + CN⁻ → [Ag(CN)₂]⁻
Acid Reaction (EXTREMELY HAZARDOUS):
AgCN + HCl → AgCl + HCN ↑
| Sector | Application |
|---|---|
| Electroplating | Silver source in silver plating baths |
| Electronics | Precision engineering coatings |
| Surface Finishing | Metal surface treatment and protection |
| Analytical Chemistry | Special applications and reagents |
| Parameter | Specification |
|---|---|
| Purity (AgCN) | ≥ 99.0% |
| Appearance | White to yellowish crystalline solid |
| Silver Content (Ag) | ~80-81% |
| Cyanide Content (CN) | ~19-20% |
| Insoluble Matter | ≤ 0.01% |
| Copper (Cu) | ≤ 0.001% |
| Lead (Pb) | ≤ 0.001% |
| Moisture | ≤ 0.5% |
| Parameter | Information |
|---|---|
| Storage Conditions | Cool, dry, well-ventilated area |
| Storage Temperature | 15-25°C |
| Keep Away From | Acids, light, moisture, oxidizers, food and feed |
| Shelf Life | 12-24 months (under proper storage) |
| Packaging | Tightly closed, light-proof containers |
| UN Number | 1684 |
| Hazard Class | 6.1 (Toxic substances) |
| Packing Group | I |
Handling Notes:
NEVER mix with acids (HCN gas risk)
Protect from light
Use only in well-ventilated areas
Avoid skin and eye contact
Emergency equipment and cyanide antidote must be available
| Parameter | Value |
|---|---|
| GHS Classification | GHS06 (Skull and Crossbones), GHS09 (Environment) |
| Signal Word | Danger |
| Hazard Statements | H300 (Fatal if swallowed), H310 (Fatal in contact with skin), H330 (Fatal if inhaled), H410 (Very toxic to aquatic life) |
| Precautionary Statements | P260, P262, P264, P270, P271, P280, P284, P301+P310, P302+P352, P304+P340, P310, P361, P363, P403+P233, P405, P501 |
| UN Number | 1684 |
| Hazard Class | 6.1 (Toxic substances) |
| Packing Group | I |
| Toxicity | Fatal if swallowed, inhaled, or absorbed through skin |
| Exposure Routes | Inhalation, ingestion, skin contact |
| Symptoms | Dizziness, nausea, breathing difficulty, loss of consciousness, death |
| Target Organs | Brain, heart, respiratory system, central nervous system |
| Antidote | Hydroxocobalamin (B12a), sodium thiosulfate |
| Ecotoxicity | Very toxic to aquatic life |
Personal Protective Equipment:
Chemical-resistant gloves
Full-face mask or safety goggles
Protective clothing
Respiratory protection (SCBA or suitable filter mask)
Adequate ventilation must be provided
Cyanide antidote (hydroxocobalamin) must be available
Only trained personnel should handle
| Exposure Route | Action |
|---|---|
| Inhalation | Move to fresh air. If breathing stopped, perform artificial respiration. Administer oxygen. SEEK IMMEDIATE medical attention. |
| Skin Contact | Remove contaminated clothing immediately. Wash with plenty of water for at least 15 minutes. SEEK IMMEDIATE medical attention. |
| Eye Contact | Rinse with plenty of water for at least 15 minutes. SEEK IMMEDIATE medical attention. |
| Ingestion | Do NOT induce vomiting. If conscious, give plenty of water or milk. SEEK IMMEDIATE medical attention. Antidote administration required. |
ANTIDOTE INFORMATION:
Hydroxocobalamin (B12a) – 5 g IV
Sodium thiosulfate – 12.5 g IV
DO NOT DELAY medical treatment
| Parameter | Information |
|---|---|
| Ecotoxicity | Very toxic to aquatic organisms |
| Bioaccumulation | Cyanide and silver compounds accumulate in the environment |
| Environmental Impact | Must be prevented from entering water and soil sources |
| Waste Management | Special disposal procedures for cyanide waste must be applied |
| Parameter | Information |
|---|---|
| UN Number | 1684 |
| Hazard Class | 6.1 (Toxic substances) |
| Packing Group | I |
| Proper Shipping Name | Silver cyanide |
| Marine Pollutant | Yes |
| ADR/RID Label | 6.1 |
| IMDG Code | Class 6.1 |
| Region | Status |
|---|---|
| EU | REACH registered; Strictly controlled |
| Turkey (KKDİK) | Mandatory compliance; registration required |
| USA (TSCA) | Listed |
| EINECS | 208-046-1 |
| Customs Tariff Code | 2837.20.00.00.19 |
SUMMARY:
Silver Cyanide (AgCN, CAS 506-64-9) is a white to yellowish crystalline solid with a molecular weight of 133.89 g/mol and density of approximately 5.6 g/cm³. It is very slightly soluble in water but dissolves in excess cyanide by forming [Ag(CN)₂]⁻ complex. It is classified as UN 1684, Class 6.1, Packing Group I.
Its most important applications include use in silver plating baths, in electronic and surface finishing applications, and in special analytical chemistry applications.
EXTREMELY TOXIC. Fatal if swallowed, inhaled, or absorbed through skin. Inhibits cellular respiration. Very toxic to aquatic life. Light sensitive. Storage should be in cool, dry, well-ventilated areas, in tightly closed light-proof containers, away from acids and moisture.
Key Properties:
| Property | Value |
|---|---|
| Formula | AgCN |
| CAS No | 506-64-9 |
| Molecular Weight | 133.89 g/mol |
| Appearance | White/yellowish crystalline |
| Density | ~5.6 g/cm³ |
| Water Solubility | Very slight |
| UN No | 1684 |
| Hazard Class | 6.1 (Toxic) |
| Packing Group | I |
CRITICAL WARNINGS:
Extreme Toxicity: Cyanide ion is extremely toxic. Fatal following ingestion, inhalation, or skin absorption. IMMEDIATE medical attention is essential.
Acid Reaction: Contact with acids releases HCN GAS. NEVER mix with or store near acids.
Light Sensitivity: Sensitive to light. Store in light-proof containers.
Silver Toxicity: Silver compounds are also toxic. Chronic exposure may cause argyria (silver accumulation).
Complex Solubility: Dissolves in excess cyanide by forming [Ag(CN)₂]⁻ complex. This property is utilized in electroplating applications.
Storage: Tightly closed, locked, restricted access, cool, dry, well-ventilated. Away from acids and light.
Protective Equipment: Full PPE (gloves, goggles, respirator, protective clothing) mandatory. Cyanide antidote must be available.
Waste Management: Special disposal procedures for cyanide waste must be applied.
Important Disclaimer: This Technical Data Sheet (TDS) is for informational purposes only. The information provided is based on available data and is believed to be accurate. However, the user is solely responsible for determining the suitability of the product for their specific applications and for complying with all applicable regulations and safety requirements. For complete safety, handling, storage, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. Silver Cyanide is EXTREMELY TOXIC and must only be used under controlled conditions with proper training and protective equipment. In case of exposure, seek IMMEDIATE medical attention.