Potassium cyanate Chemical Properties

Melting point:

315 °C

Density 

2.056 g/mL at 25 °C(lit.)

storage temp. 

Store below +30°C.

solubility 

750g/l

form 

Crystalline Powder and Chunks

color 

White

Specific Gravity

2.056

PH

10 (50g/l, H2O, 20℃)

Water Solubility 

750 g/L (20 ºC)

Merck 

14,7625

Boiling point:

700-900°C (1000 hPa) Not applicable,(decomposition)

BRN 

3594798

Stability:

Stable. Incompatible with acids.

CAS DataBase Reference

590-28-3(CAS DataBase Reference)

EPA Substance Registry System

Potassium cyanate (590-28-3)

Safety Information

Hazard Codes 

Xn

Risk Statements 

22-36

Safety Statements 

24/25-26

WGK Germany 

1

RTECS 

GS6825000

TSCA 

Yes

HS Code 

2842 90 80

Hazardous Substances Data

590-28-3(Hazardous Substances Data)

Toxicity

LD50 i.p. in mice: 320 mg/kg (Cerami)

MSDS

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Potassium cyanate Usage And Synthesis

Chemical Properties

Potassium cyanate, KOCN,is colorless,water soluble crystals. Used as an herbicide and for the manufacture of drugs and organic chemicals,

Chemical Properties

Potassium cyanate, KCNO, white solid, soluble, formed along with lead metal by reaction of potassium cyanide and lead monoxide solids upon heating. Source of cyanate.

Uses

Potassium cyanate is used as chemical intermediate and as a weed killer. It is also used for the heat treatment of metals.

Uses

Herbicide, manufacture of organic chemicals and drugs, treatment of sickle-cell anemia.

Safety Profile

Poison by intraperitoneal route. Moderately toxic by ingestion. Causes irritation of the gastrointestinal tract. An herbicide. It is said to be slowly metabolized in the body to cyanide but does not have high toxicity of cyanides. When heated to decomposition it emits very toxic fumes of CNand K2O.

Purification Methods

Common impurities include ammonia and bicarbonate ion (from hydrolysis). Purify it by preparing a saturated aqueous solution at 50o, neutralising with acetic acid, filtering, adding two volumes of EtOH and keeping for 3-4hours in an ice bath. (More EtOH can lead to co-precipitation of KHCO3.) Filter, wash it with EtOH and dry it rapidly in a vacuum desiccator (P2O5). The process is repeated [Vanderzee & Meyers J Chem Soc 65 153 1961].

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