Silver cyanide
Silver cyanide
CAS: 506-64-9
Molecular Formula: CAgN
Silver cyanide - Names and Identifiers
| Name | Silver cyanide |
| Synonyms | SILVER CYANIDE Silver cyanide silver(1+)cyanide SILVER(I) CYANIDE silver(1+) cyanide silvercyanide(ag(cn)) Silver cyanide white powder |
| CAS | 506-64-9 |
| EINECS | 208-048-6 |
| InChI | InChI=1/CN.Ag/c1-2;/q-1;+1 |
Silver cyanide - Physico-chemical Properties
| Molecular Formula | CAgN |
| Molar Mass | 133.89 |
| Density | 3,95 g/cm3 |
| Melting Point | 300 °C |
| Boling Point | 25.7°C at 760 mmHg |
| Water Solubility | insoluble |
| Vapor Presure | 740mmHg at 25°C |
| Appearance | Powder |
| Specific Gravity | 3.95 |
| Color | White to off-white |
| Exposure Limit | NIOSH: IDLH 25 mg/m3 |
| Solubility Product Constant(Ksp) | pKsp: 16.22 |
| Merck | 14,8512 |
| BRN | 4360924 |
| Stability | May decompose in light. Incompatible with strong acids, ammonia, hydrogen peroxide. Forms an explosive mixture with fluorine. |
| Sensitive | Light Sensitive |
| Refractive Index | 1.685 |
| Physical and Chemical Properties | White or light gray powder, odorless, tasteless, relative density 3.95, melting point 320 ℃. Soluble in ammonia, ethanol, sodium thiosulfate solution, hot concentrated nitric acid, insoluble in water, stable in dry air, heated to more than 320 ℃ decomposition, dark color after exposure, highly toxic. |
| Use | Used as precious metal electroplating reagent and additive |
Silver cyanide - Risk and Safety
| Risk Codes | R25 - Toxic if swallowed R32 - Contact with acids liberates very toxic gas R33 - Danger of cumulative effects R41 - Risk of serious damage to eyes R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R26/27/28 - Very toxic by inhalation, in contact with skin and if swallowed. |
| Safety Description | S7 - Keep container tightly closed. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S29 - Do not empty into drains. S28A - S28 - After contact with skin, wash immediately with plenty of soap-suds. |
| UN IDs | UN 1684 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | VW3850000 |
| TSCA | Yes |
| HS Code | 28432900 |
| Hazard Class | 6.1 |
| Packing Group | II |
Silver cyanide - Nature
Open Data Verified Data
white or light gray powder, odorless, tasteless, relative density 3. 95, melting point 320 ℃. Soluble in ammonia, ethanol, sodium thiosulfate solution, hot concentrated nitric acid, insoluble in water, stable in dry air, heated to more than 320 ℃ decomposition, dark color after exposure, highly toxic.
Last Update：2024-01-02 23:10:35
Silver cyanide - Preparation Method
Open Data Verified Data
- metallic silver method; The metallic silver is first dissolved in nitric acid, then diluted with water, and sodium cyanide is added with constant stirring until the precipitation is complete (the solution is kept weakly acidic throughout the reaction), the precipitate was separated, washed and dried to obtain silver cyanide.
- double decomposition method; In the cold saturated solution of silver nitrate, the concentrated potassium cyanide solution and hydrocyanic acid are reacted by double decomposition to obtain silver cyanide precipitate, which is then separated, washed and dried to obtain silver cyanide finished product.
Last Update：2022-01-01 11:00:56
Silver cyanide - Use
Open Data Verified Data
Medicine, silver plating, protective coating for autoclave lining, electrical contact, electroplating of aircraft engine bearings.
Last Update：2022-01-01 11:00:55
Silver cyanide - Safety
Open Data Verified Data
packed in an iron drum lined with a polyethylene plastic bag. The package should be marked with "highly toxic drugs. It belongs to inorganic toxic products, with risk code: GB 6.1 class 61001. Highly toxic GA 58-93 Al011. UNN0.1684 ; IMDG CODE(2004 edition, volume 2) 76 pages, Class 6.1. Stored in a ventilated, dry warehouse, preferably special storage. The container must be closed. Not with acids, potassium chlorate (sodium) and edible goods Co storage mixed. Warehouse management should be handled according to the provisions of the public security department. See potassium cyanide for treatment on misfire. Toxicity and protection: see potassium cyanide products.
Last Update：2022-01-01 11:00:56
Silver cyanide - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| solubility in water (g/100ml) | dissolved grams per 100ml of water: 1.467 × 10-7/20 ℃ |
| toxicity | see potassium cyanide products. |
| use | medicine, silver plating, protective coating for lining of autoclave, electrical contact, electroplating of aircraft engine bearings. Used as precious metal electroplating reagent and additive Used as analytical reagent |
| production method | metal silver method first dissolves metal silver in nitric acid, then dilutes with water, adds sodium cyanide under constant stirring until the precipitation is complete (keep the solution weakly acidic during the whole reaction process), and then separate, wash and dry the precipitate to obtain silver cyanide. Its Ag 2HNO3 → AgNO3 H2O NO2 ↑ AgNO3 NaCN → AgCN NaNO3 metathesis method In a cold silver nitrate saturated solution, the concentrated potassium cyanide solution and hydrocyanic acid are metathesis reacted to obtain silver cyanide precipitate, and then separated, washed and dried to obtain silver cyanide finished products. Its AgNO3 KCN → AgCN KNO3 |
| category | toxic substances |
| toxicity classification | highly toxic |
| acute toxicity | oral-rat LD50: 123 mg/kg |
| stimulation data | skin-rabbit 500 mg/24 hours mild; Eye-rabbit 5 mg/24 hours severe |
| flammability hazard characteristics | non-combustible substances; When exposed to water and acid, toxic and flammable hydrogen cyanide gas is released; When heated, toxic cyanide and silver-containing substance smoke are produced |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; Store separately from alkalis, acids and food additives |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
