Basic information Preparation Safety Supplier Related

potassium peroxide

Basic information Preparation Safety Supplier Related

potassium peroxide Basic information

Product Name:
potassium peroxide
Synonyms:
  • POTASSIUM PEROXIDE
  • Dipotassio peroxide
  • Peroxydipotassium
  • DUPSQGGNCHNYTQ-UHFFFAOYSA-M
CAS:
17014-71-0
MF:
K2O2
MW:
110.2
Mol File:
17014-71-0.mol
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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 Reference
17014-71-0
EPA Substance Registry System
Dipotassium peroxide (17014-71-0)
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Safety Information

RIDADR 
UN 1491 5.1/ PGI
HazardClass 
5.1
PackingGroup 
I
Hazardous Substances Data
17014-71-0(Hazardous Substances Data)
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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 Properties

yellow amorphous mass; decomposes in water, evolving oxygen; oxidizing agent; used for bleaching, in oxygen generating gas masks [HAW93]

Uses

Oxidizing agent, bleaching agent, oxygen- generating gas masks.

General Description

A 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 Reactions

Reacts exothermically with water (or moisture in the air) to give oxygen and a caustic solution, potassium hydroxide [NFPA 491M] .

Reactivity Profile

potassium 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].

Hazard

Dangerous fire and explosion risk in con- tact with organic materials, strong oxidizing agent. Irritant to skin and tissue.

Health Hazard

Inhalation causes respiratory irritation. Ingestion causes severe burns of mouth and stomach. Contact with eyes or skin causes irritation and caustic burns.

Fire Hazard

Behavior in Fire: Increases intensity of fire and can start fires when in contact with organic combustibles

Safety Profile

Dangerous 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 Products

potassium peroxideSupplier

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potassium peroxide(17014-71-0)Related Product Information