Potassium silver cyanide
- potassium argentocyanide
- Potassium bis(cyano-c)argentate(1-)
- Potassium dicyanoargentate
- Potassium dicyanoargentate(I)
- Potassium dicyanoargentate(1-)
- Potassium dicyanoargentate (Kag(Cn)2)
In silver plating, as bactericide.
Registry Numbers and Inventories.
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
370 - 371
2.36 g/cm3 (20 C)
Solubility in water
Hazards and Protection.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate protective gloves, clothing and goggles.
Wear positive pressure self-contained breathing apparatus (SCBA).
Avoid inhalation or skin contact. (Non-Specific -- Cyanide, Inorganic, n.o.s.) Do not touch spilled materials; stop leak if you can do so without risk. Use water spray to reduce vapors. Small spills: absorb with sand or other noncombustible absorbent material and place into containers for later disposal. Small dry spills: with clean shovel place material into clean, dry container and cover; move containers from spill area. Large spills: dike far ahead of spill for later disposal.
Sensitive to light.
(Non-Specific -- Cyanide, Inorganic, n.o.s.) Isolate hazard area and deny entry. Stay upwind; keep out of low areas. Ventilate closed spaces before entering them. Wear positive pressure breathing apparatus and special protective clothing. Fight fire from maximum distance. Dike fire control water for later disposal. Do not scatter the material.(Non-Specific -- Cyanide, Inorganic, n.o.s.) Use dry chemical, carbon dioxide, water spray, or foam for small fire, and water spray, fog, or foam for large fires. Move containers of this material away from fire area if this can be done without risk.
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
When heated to decomposition, potassium silver cyanide emits very toxic fumes of cyanide and nitrogen oxides. Avoid light.
When heated to decomposition it emits very toxic fumes of cn- and nox.
IDHL: 25 mg/m3
Initial presentation of cyanide poisoning may include hyperpnea and rapid breathing. Hypoventilation progressing to apnea may be seen in the later phases and is a major cause of death. Rapid heart rate and elevated blood pressure may be seen. Low heart rate and abnormally low blood pressure are seen in the late phases of cyanide poisoning. Headache, CNS stimulation with anxiety, agitation, and combative behavior, coma, and seizures may be seen. Most victims of acute poisoning either die acutely or fully recover.
Nausea, vomiting, and abdominal pain may occur, especially after ingestion. Ingestion of cyanide salts can cause irritation or corrosion of the esophageal or gastric mucosa.
Hyperpnea and tachypnea may be noted initially. Hypoventilation progressing to apnea may be seen in the later phases and is a major cause of death.
Potassium silver cyanide is a severe irritant of the skin.
Seek medical assistance.
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. While cyanide can be absorbed through intact skin, most reported cases have involved whole-body immersion in cyanide solutions or large-area burns with molten cyanide solutions.
Immediately flush with running water for at least 20 minutes.
I; II; III
USCG CHRIS Code