перекись калия химические свойства, назначение, производство
Химические свойства
yellow amorphous mass; decomposes in water, evolving oxygen; oxidizing agent; used for bleaching, in oxygen generating gas masks [HAW93]
Использование
Oxidizing agent, bleaching agent, oxygen-
generating gas masks.
Общее описание
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.
Реакции воздуха и воды
Reacts exothermically with water (or moisture in the air) to give oxygen and a caustic solution, potassium hydroxide [NFPA 491M] .
Профиль реактивности
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].
Опасность
Dangerous fire and explosion risk in con-
tact with organic materials, strong oxidizing agent.
Irritant to skin and tissue.
Угроза здоровью
Inhalation causes respiratory irritation. Ingestion causes severe burns of mouth and stomach. Contact with eyes or skin causes irritation and caustic burns.
Пожароопасность
Behavior in Fire: Increases intensity of fire and can start fires when in contact with organic combustibles
Профиль безопасности
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.
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препарат