Definition

1. Noun:
   • A chemical compound: Potassium permanganate is an inorganic chemical compound with the formula KMnO₄. It is a strong oxidizing agent.
   • A specific substance: It is a poisonous salt that forms dark purple, almost black, crystals. When dissolved in water, it produces a distinctive purple-red or pink solution.

Usage

• Potassium permanganate is used primarily as an oxidizing agent, a disinfectant, an antiseptic, and a bleaching agent in various industrial and laboratory applications.
• It is handled with care due to its oxidizing properties and potential to stain skin and materials.

Examples

• Noun:
  • The laboratory uses potassium permanganate for titration experiments.
  • A dilute solution of potassium permanganate can be used to treat certain skin infections.
  • The purple color of the potassium permanganate solution faded as it reacted with the organic matter.

Advanced Usage

• In chemistry: Used as a reagent in redox titrations (often called permanganometry) to determine the concentration of reducing agents.
  • The endpoint of the titration was marked by the persistence of the pale pink color from the potassium permanganate.
• In water treatment: Employed to remove iron and hydrogen sulfide from well water and as an algicide.
  • The facility added potassium permanganate to the water to control odor and taste.
• In survival and emergency medicine: Historically used in very dilute solutions as a topical antiseptic and to make water potable.
  • The survival guide mentioned potassium permanganate as a chemical means for water purification.

Variants and Related Words

• Permanganate (noun): The anion (MnO₄⁻) present in this salt. Potassium permanganate is the most common permanganate compound.
  • The permanganate ion is a powerful oxidizing agent.
• KMnO₄ (noun): The chemical formula for potassium permanganate.

Synonyms

• KMnO₄ (Chemical formula synonym)
• Permanganate of potash (Historical/archaic name)

Related Phrases

• Potassium permanganate solution: Refers to the compound dissolved in water, which is the form in which it is typically applied.
  • Always prepare a fresh potassium permanganate solution for the experiment.
• Potassium permanganate crystals: Refers to the solid, crystalline form of the compound.
  • Handle the potassium permanganate crystals with gloves to avoid stains.

Noun

1. a poisonous salt that forms dark purple crystals and is purple-red when dissolved in water; used as an oxidizing and bleaching agent and as a disinfectant and antiseptic