potassium peroxide

potassium peroxide Basic information
Preparation
Product Name:potassium peroxide
Synonyms:POTASSIUM PEROXIDE;Dipotassio peroxide;Peroxydipotassium;DUPSQGGNCHNYTQ-UHFFFAOYSA-M
CAS:17014-71-0
MF:K2O2
MW:110.2
EINECS:
Product Categories:
Mol File:17014-71-0.mol
potassium peroxide Structure
potassium peroxide Chemical Properties
Melting point 490°C
density >1 g/cm3
solubility reacts with H2O
form yellow amorphous solid
color yellow amorphous solid
Water Solubility decomposed by H2O [HAW93]
CAS DataBase Reference17014-71-0
EPA Substance Registry SystemDipotassium peroxide (17014-71-0)
Safety Information
RIDADR UN 1491 5.1/ PGI
HazardClass 5.1
PackingGroup I
Hazardous Substances Data17014-71-0(Hazardous Substances Data)
MSDS Information
potassium peroxide Usage And Synthesis
Preparation

Potassium peroxides have been prepared by carefully controlled oxidation of the metals with the exact amount of air or nitric oxide, but it is difficult to prepare the pure peroxides in this manner because of the ease with which the peroxides are oxidized to the superoxide. They can also be prepared by careful oxidation of liquid ammonia solutions of the metals, using the stoichiometric quantity of oxygen for peroxide formation. They can also be prepared by the thermal decomposition of the superoxides in vacuum; for example, potassium superoxide decomposes at about 400°C.

Chemical Propertiesyellow amorphous mass; decomposes in water, evolving oxygen; oxidizing agent; used for bleaching, in oxygen generating gas masks [HAW93]
UsesOxidizing agent, bleaching agent, oxygen- generating gas masks.
General DescriptionA yellow granular solid. Mixtures of potassium peroxide and combustible material readily ignited by friction, heat or contact with moisture. Prolonged exposure to fire or heat may cause vigorous decomposition of the material and rupture of the container. Used as a bleach.
Air & Water ReactionsReacts exothermically with water (or moisture in the air) to give oxygen and a caustic solution, potassium hydroxide [NFPA 491M] .
Reactivity Profilepotassium peroxide is a strong oxidizing agent. Reacts readily with reducing agents, including most organic compounds, to generate heat and products that may be gaseous (causing pressurization of closed containers). The products may themselves be capable of further reactions (such as combustion in the air). A quantity left on a piece of paper in the open air usually starts a fire in the paper spontaneously in a few minutes [Freeman].
HazardDangerous fire and explosion risk in con- tact with organic materials, strong oxidizing agent. Irritant to skin and tissue.
Health HazardInhalation causes respiratory irritation. Ingestion causes severe burns of mouth and stomach. Contact with eyes or skin causes irritation and caustic burns.
Fire HazardBehavior in Fire: Increases intensity of fire and can start fires when in contact with organic combustibles
Safety ProfileDangerous fire hazard by spontaneous chemical reaction. It is a very powerful oxidzer. Fires of this material should be handled like sodurn peroxide fires. Moderate explosion hazard by spontaneous chemical reaction. Explodes on contact with water, forming H2O2 and KOH. Violent reactions with air, Sb, As, O2 , K. Vigorous reaction on contact with reducing materials. On contact with acid or acid fumes, it can emit toxic fumes. Incompatible with carbon, diselenium dichloride, ethanol, hydrocarbons, metals. When heated to decomposition it emits toxic fumes of K2O . See also PEROXIDES, E INORGANIC.
potassium peroxide Preparation Products And Raw materials
Preparation ProductsStrontium peroxide
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