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Silver cyanide

Physical Properties Preparation
Silver cyanide
Silver cyanide structure
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)
EWG's Food Scores
EPA Substance Registry System
Silver cyanide (506-64-9)
  • Risk and Safety Statements
Signal word  Danger
Hazard statements  H290-H300-H310-H315-H330-H400-H300+H310+H330-H318-H410
Precautionary statements  P301+P310a-P304+P340-P305+P351+P338-P320-P330-P405-P501a-P280-P302+P352+P310-P304+P340+P310-P305+P351+P338+P310
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

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 $63.8 2019-12-02 Buy
Sigma-Aldrich 184535 Silver cyanide 99% 506-64-9 50g $215 2019-12-02 Buy
Alfa Aesar 011424 Silver cyanide, 99% 506-64-9 25g $144 2019-12-02 Buy
Alfa Aesar 011424 Silver cyanide, 99% 506-64-9 100g $519 2019-12-02 Buy
Strem Chemicals 93-4708 Silver cyanide, 99% 506-64-9 50g $409 2019-12-02 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

Physical properties

Grayish-white hexagonal crystals; density 3.95 g/cm3; 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.


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.


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( 80)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Hubei Jusheng Technology Co.,Ltd.
027-59599243 CHINA 28235 58
Hubei xin bonus chemical co. LTD
027-59338440 CHINA 23048 58
0371-55170695 CHINA 20537 58
career henan chemical co
0086-371-86658258 CHINA 29612 58
Mainchem Co., Ltd. +86-0592-6210733
+86-0592-6210733 CHINA 32445 55
J & K SCIENTIFIC LTD. 400-666-7788 010-82848833-
86-10-82849933; China 96815 76
Alfa Aesar 400-610-6006
021-67582001/03/05 China 30163 84
Beijing Ouhe Technology Co., Ltd 13552068683 010-82967028-
+86-10-82967029 China 12495 60
JinYan Chemicals(ShangHai) Co.,Ltd. 13817811078,021-50426030
86-021-50426522,50426273 China 10010 60
BEST-REAGENT 18981987031 400-1166-196
QQ:800101999;; China 9899 57

View Lastest Price from Silver cyanide manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2020-02-17 Silver cyanide
US $7.00 / KG 1KG 99% 100kg Career Henan Chemical Co

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