Caesium cyanide

Cesium cyanide

Names
IUPAC name Cesium cyanide
Identifiers
CAS Number	21159-32-0 Y
3D model (JSmol)	Interactive image
ChemSpider	67139952
PubChem CID	101925428
InChI InChI=1S/CN.Cs/c1-2;/q-1;+1 Key: XTCPEYCUFMHXBI-UHFFFAOYSA-N
SMILES [C-]#N.[Cs+]
Properties
Chemical formula	CCsN
Molar mass	158.923 g·mol−1
Appearance	White solid
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Extremely toxic
NFPA 704 (fire diamond)	<imagemap> File:NFPA 704.svg|80px|alt=NFPA 704 four-colored diamond poly 150 150 300 300 150 450 0 300 Health 4: Very short exposure could cause death or major residual injury. E.g. VX gas poly 300 0 450 150 300 300 150 150 Flammability 0: Will not burn. E.g. water poly 450 150 600 300 450 450 300 300 Instability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogen poly 300 300 450 450 300 600 150 450 Special hazards (white): no code desc none </imagemap> 4 0 0
Lethal dose or concentration (LD, LC):
LD50 (median dose)	5 mg/kg
Related compounds
Other cations	Lithium cyanide Sodium cyanide Potassium cyanide Rubidium cyanide Ammonium cyanide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Cesium cyanide (chemical formula: CsCN) is the cesium salt of hydrogen cyanide. It is a white solid, easily soluble in water, with a smell reminiscent of bitter almonds, and with crystals similar in appearance to sugar. Caesium cyanide has chemical properties similar to potassium cyanide and is very toxic.

Production

Hydrogen cyanide reacts with cesium hydroxide giving cesium cyanide and water:

HCN + CsOH → CsCN + H₂O.