Chemical Properties
violet or dark purple, deliquescent crystal(s); made by reacting KMnO4 and CaCl2; used in the textile industry, to sterilize water, and as a deodorizer [HAW93] [MER06]
Uses
Antiseptic, disinfectant, deodorizer; with CaF2 as binder for welding electrode coatings and fluxes.
General Description
Purple crystalline solid. CALCIUM PERMANGANATE is used as a disinfectant and deodorizer, in water purification, and for many other uses.
Air & Water Reactions
Water soluble.
Reactivity Profile
CALCIUM PERMANGANATE is an oxidizing agent. Noncombustible but CALCIUM PERMANGANATE will accelerate the burning of combustible material. If the combustible material is finely divided the mixture may be explosive. Contact with liquid combustible materials may result in spontaneous ignition. Contact with sulfuric acid may cause fires or explosions. Mixtures with acetic acid or acetic anhydride can explode if not kept cold [Von Schwartz 1918 p. 34 ]. Explosions can occur when CALCIUM PERMANGANATE that has been treated with sulfuric acid comes in contact with benzene, carbon disulfide, diethyl ether, ethyl alcohol, petroleum, or other organic matter.
Health Hazard
Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution.
Fire Hazard
These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.
Purification Methods
Crystallise it from water (3.3mL/g) by partial evaporation in a desiccator. It is deliquescent. Note that it loses oxygen more readily than the potassium salt. It is an oxidising agent.
Industrial uses
Calcium permanganate [Ca(MnO4)2] is used in textile
production, as a water-sterilising agent and in dental procedures.
