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Silver cyanide

Physical Properties Preparation
Silver cyanide
Silver cyanide
Chemical Name:
Silver cyanide
ai3-28748;SILVER CYANIDE;kyanidstribrny;cyanured’argent;silver(1+)cyanide;Silvercyanide,99%;SILVER(I) CYANIDE;Silver cyanide 99%;rcrawastenumberp104;silvercyanide(ag(cn))
Molecular Formula:
Formula Weight:
MOL File:

Silver cyanide Properties

Melting point:
300 °C
3,95 g/cm3
refractive index 
White to off-white
Specific Gravity
Water Solubility 
Light Sensitive
Solubility Product Constant (Ksp)
pKsp: 16.22
May decompose in light. Incompatible with strong acids, ammonia, hydrogen peroxide. Forms an explosive mixture with fluorine.
CAS DataBase Reference
506-64-9(CAS DataBase Reference)
EPA Substance Registry System
Silver cyanide (Ag(CN))(506-64-9)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  T,N,T+
Risk Statements  25-32-33-41-50/53-26/27/28
Safety Statements  7-26-45-60-61-29-28A-28
RIDADR  UN 1684 6.1/PG 2
WGK Germany  3
RTECS  VW3850000
HazardClass  6.1
PackingGroup  II
HS Code  28432900
Hazardous Substances Data 506-64-9(Hazardous Substances Data)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404
H300 Fatal if swallowed Acute toxicity,oral Category 1, 2 Danger P264, P270, P301+P310, P321, P330,P405, P501
H310 Fatal in contact with skin Acute toxicity,dermal Category 1, 2 Danger P262, P264, P270, P280, P302+P350,P310, P322, P361, P363, P405, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P320 Specific treatment is urgent (see … on this label).
P330 Rinse mouth.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Silver cyanide price More Price(7)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 184535 Silver cyanide 99% 506-64-9 10g $63.1 2018-11-13 Buy
Sigma-Aldrich 184535 Silver cyanide 99% 506-64-9 50g $212 2018-11-13 Buy
Alfa Aesar 011424 Silver cyanide, 99% 506-64-9 25g $141 2018-11-16 Buy
Alfa Aesar 011424 Silver cyanide, 99% 506-64-9 100g $508 2018-11-16 Buy
Strem Chemicals 93-4708 Silver cyanide, 99% 506-64-9 10g $62 2018-11-13 Buy

Silver cyanide Chemical Properties,Uses,Production

Physical Properties

Grayish-white hexagonal crystals; decomposes at 320°C; insoluble in water, alcohol or dilute acids; moderately soluble in concentrated ammonia; soluble in concentrated boiling nitric acid; also soluble in alkali cyanide solutions.


Silver cyanide is prepared by adding a solution of an alkali cyanide to a solution of silver nitrate:
Ag+ (aq) + CN¯ (aq) → AgCN (s)

Chemical Properties

Silver cyanide is a white or grayish, odorless powder which darkens when exposed to light.

Chemical Properties

white to off-white powder


For silver plating; formerly used for extemporaneous preparation of dil hydrocyanic acid by treatment with HCl.

General Description

A white to gray odorless tasteless powder that darkens on exposure to light. Insoluble in water. Toxic by skin absorption through open wounds, ingestion and inhalation of dust. Toxic oxides of nitrogen are produced in fires.

Air & Water Reactions

Insoluble in water. Decomposes slowly when moist, giving off hydrogen cyanide, which is toxic by inhalation.

Reactivity Profile

Silver cyanide is very rapidly decomposed by acids giving off hydrogen cyanide, a flammable poison gas. Soluble in aqueous ammonia, dilute boiling nitric acid, aqueous potassium cyanide solution and aqueous sodium thiosulfate solutions. Subject to explosive instability or violent oxidation under certain conditions. Fusion with metal chlorates, perchlorates, nitrates, or nitrites can cause a violent explosion [Bretherick 1979 p. 101]. Fluorine and Silver cyanide react with explosive violence at ordinary temperatures [Mellor 2 Supp. 1:63 1956].


Toxic by ingestion or inhalation.

Health Hazard

Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
LD50 oral (rat): 123mg/kg

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways.

Safety Profile

Deadly poison by ingestion. A skin and severe eye irritant. When heated to decomposition it emits very toxic fumes of CNand NO,. Incompatible with phosphorus tricyanide, fluorine. Used in silver plating. See also SILVER COMPOUNDS and CYANIDE.

Potential Exposure

It is primarily used in silver plating.

First aid

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit. Note: Use amyl nitrate capsules if symptoms develop. All area employees should be trained regularly in emergency measures for cyanide poisoning and in CPR. A cyanide antidote kit should be kept in the immediate work area and must be rapidly available. Kit ingredients should be replaced every 12 years to ensure freshness. Persons trained in the use of this kit; oxygen use, and CPR must be quickly available.


UN1684 Silver cyanide, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.

Purification Methods

It is a POISONOUS white or grayish white powder. Stir it thoroughly with H2O, filter, wash well with EtOH and dry it in air in the dark. It is very insoluble in H2O (0.000023g in 100mL H2O) but is soluble in HCN or aqueous KCN to form the soluble Ag(CN) 22 complex. [Schnitz-Dumont Chem Ber 72 298 1939, Randall & Halford J Am Chem Soc 52 184 1930.]


Acetylene, ammonia, and hydrogen peroxide (H2O2). Contact with moisture, CO2, acid and acid fumes release hydrogen cyanide. Contact with fluorine is violently explosive at normal temperatures. Incompatible with phosphorus cyanide.

Waste Disposal

Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform to EPA regulations governing storage, transportation, treatment, and waste disposal

Silver cyanide Preparation Products And Raw materials

Raw materials

Preparation Products

Silver cyanide Suppliers

Global( 75)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32651 55
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30291 84
Beijing Ouhe Technology Co., Ltd +86-10-4006331231;+86-10-51280831;+86-10-82967028
+86-10-82967029 China 12598 60
JinYan Chemicals(ShangHai) Co.,Ltd. 13817811078,021-50426030
86-021-50426522,50426273 China 10073 60
BEST-REAGENT 028-85973071 028-85973075
028-85973075 China 9900 57
Sinopharm Chemical Reagent Co,Ltd. 86-21-63210123
86-21-63290778 86-21-63218885 China 9966 79
Richest Group Limited +86 21 5017 5386/3175 7285/86/87/88/89
+86 21 6085 3086 China 13956 57
Spectrum Chemical Manufacturing Corp. 021-67601398,18616765336,QQ:3003443156
021-57711696 China 9779 60
Thermo Fisher Scientific 800-810-5118
+86-10-84193589 China 17559 75

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