The chemical compound potassium hydroxide, (KOH) sometimes known as caustic potash, potassa, potash lye, and potassium hydrate, is a metallic base. It is very alkaline and is a "strong base", along with sodium hydroxide, lithium hydroxide, calcium hydroxide, barium hydroxide and strontium hydroxide. Image File history File links Broom_icon. ... Image File history File links Download high resolution version (771x763, 68 KB) Summary A sample of potassium hydroxide pellets. ... This article does not cite its references or sources. ... Molar mass is the mass of one mole of a chemical element or chemical compound. ... Deliquescent materials are substances (mostly salts) which have a strong affinity for moisture and will absorb relatively large amount of water from the atmosphere if exposed to it, forming a liquid solution. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... In physics, density is mass m per unit volume V. For the common case of a homogeneous substance, it is expressed as: where, in SI units: ρ (rho) is the density of the substance, measured in kg·m-3 m is the mass of the substance, measured in kg V is... In the physical sciences, a phase is a set of states of a macroscopic physical system that have relatively uniform chemical composition and physical properties (i. ... It has been suggested that this article or section be merged with Solution. ... “HOH” redirects here. ... The melting point of a crystalline solid is the temperature at which it changes state from solid to liquid. ... The boiling point of a substance is the temperature at which it can change its state from a liquid to a gas throughout the bulk of the liquid at a given pressure. ... The vapor pressure is the pressure (if the vapor is mixed with other gases, the partial pressure) of a vapor. ... The acid dissociation constant (Ka), also known as the acidity constant or the acid-ionization constant, is a specific equilibrium constant for the reaction of an acid with its conjugate base in aqueous solution [1]. // When an acid dissolves in water, it partly dissociates forming hydronium ions and its conjugate... The coordination geometry of an atom is the geometrical pattern formed by its neighbors in a molecule or a crystal. ... Enargite crystals In mineralogy and crystallography, a crystal structure is a unique arrangement of atoms in a crystal. ... An example MSDS in a US format provides guidance for handling a hazardous substance and information on its composition and properties. ... Council Directive 67/548/EEC of 27 June 1967 on the approximation of laws, regulations and administrative provisions relating to the classification, packaging and labelling of dangerous substances (as amended) is the main European Union law concerning chemical safety. ... NFPA 704 is a standard maintained by the U.S. National Fire Protection Association. ... Image File history File links NFPA_704. ... R-phrases are defined in Annex III of European Union Directive 67/548/EEC: Nature of special risks attributed to dangerous substances and preparations. ... S-phrases are defined in Annex IV of European Union Directive 67/548/EEC: Safety advice concerning dangerous substances and preparations. ... The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture with air. ... RTECS, also known as Registry of Toxic Effects of Chemical Substances, is a database of toxicity information compiled from the open scientific literature that is available for charge. ... The refractive index (or index of refraction) of a medium is a measure for how much the speed of light (or other waves such as sound waves) is reduced inside the medium. ... The relative dielectric constant of a material under given conditions is a measure of the extent to which it concentrates electrostatic lines of flux. ... Ultraviolet-Visible Spectroscopy or Ultraviolet-Visible Spectrophotometry (UV/ VIS) involves the spectroscopy of photons (spectrophotometry). ... Infrared spectroscopy (IR Spectroscopy) is the subset of spectroscopy that deals with the IR region of the EM spectrum. ... It has been suggested that NMR Data Processing be merged into this article or section. ... Mass spectrometry (also known as mass spectroscopy (deprecated)[1] or informally, mass-spec and MS) is an analytical technique used to measure the mass-to-charge ratio of ions. ... An electrostatic potential map of the nitrate ion (NO3−). Areas coloured red are lower in energy than areas colored yellow An ion is an atom or group of atoms which have lost or gained one or more electrons, making them negatively or positively charged. ... Potassium oxide is a compound of potassium and oxygen used mainly as a intermediate in inorganic synthesis. ... Potassium peroxide has formula K2O2. ... Potassium superoxide (symbol KO2) is a superoxide of potassium. ... An electrostatic potential map of the nitrate ion (NO3−). Areas coloured red are lower in energy than areas colored yellow An ion is an atom or group of atoms which have lost or gained one or more electrons, making them negatively or positively charged. ... Lithium hydroxide (LiOH) is a corrosive alkali. ... Sodium hydroxide (NaOH), also known as lye or caustic soda, is a caustic metallic base. ... The common (Arrhenius) definition of a base is a chemical compound that either donates hydroxide ions or absorbs hydrogen ions when dissolved in water. ... Caesium hydroxide, (CsOH) is a chemical compound consisting of an atom of caesium and a hydroxide group (also known as hydroxyl). ... In chemistry, the standard state of a material is its state at 1 bar (100 kilopascals) and 25 degrees Celsius (298. ... A chemical compound is a chemical substance consisting of two or more different chemically bonded chemical elements, with a fixed ratio determining the composition. ... General Name, Symbol, Number potassium, K, 19 Chemical series alkali metals Group, Period, Block 1, 4, s Appearance silvery white Standard atomic weight 39. ... Hydroxide is a polyatomic ion consisting of oxygen and hydrogen: OH− It has a charge of −1. ... Potash Potash (or carbonate of potash) is an impure form of potassium carbonate (K2CO3) mixed with other potassium salts. ... Lye is a caustic solution used for glass and soap making. ... Acids and bases: Acid-base reaction pH Self-ionization of water Buffer solutions Systematic naming Acid-base extraction Acidity function Proton affinity Acids: Strong acids Weak acids Superacids Lewis acids Mineral acids Organic acids Bases: Strong bases Weak bases Superbases Lewis bases Organic bases edit In chemistry, a base is... The common (Arrhenius) definition of a base is a chemical compound that either donates hydroxide ions or absorbs hydrogen ions when dissolved in water. ... Sodium hydroxide (NaOH), also known as lye or caustic soda, is a caustic metallic base. ... Lithium hydroxide (LiOH) is a corrosive alkali. ... It has been suggested that Portlandite be merged into this article or section. ... Barium hydroxide is a basic chemical compound, with the chemical formula Ba(OH)2. ... // Preparation Uses Used chiefly in the refining of beet sugar. ...

Uses

In agriculture, potassium hydroxide is used to correct the pH of acidic soils. It can also be used as a fungicide or even a herbicide. The correct title of this article is . ... A Fungicide is one of three main methods of pest control- chemical control of fungi in this case. ... This article or section does not cite its references or sources. ...

It is a major industrial chemical used as a base in a wide variety of chemical processes. Some uses of KOH include acrylate ester copolymer coating, defoaming agents used in the manufacture of paper, saponifying oils for liquid soap, formulation aid for food, pH control agent, polyethylene resins, textile processing and as a catalyst in reactions like the production of biodiesel. A blank sheet of paper Paper is a commodity of thin material produced by the amalgamation of fibers, typically vegetable fibers composed of cellulose, which are subsequently held together by hydrogen bonding. ... Saponification of a lipid with potassium hydroxide. ... This article or section cites very few or no references or sources. ... Sunday textile market on the sidewalks of Karachi, Pakistan. ... It has been suggested that this article or section be merged into Catalysis. ... In some countries, filling stations sell bio-diesel more cheaply than conventional diesel. ...

Other uses include veterinary medicine in disbudding calves horns and to dissolve scales and hair, human medicine, to diagnose fungal infections (see KOH test) and as a wart and cuticle solvent, and in the manufacture of cleansers. This type of compound is also used in washing powders, some denture cleaners, non-phosphate detergents, and drain or pipe cleaners. Veterinary medicine is the application of medical, diagnostic, and therapeutic principles to companion, domestic, exotic, wildlife, and production animals. ... Trinomial name Homo sapiens sapiens Linnaeus, 1758 Humans, or human beings, are bipedal primates belonging to the mammalian species Homo sapiens (Latin: wise man or knowing man) in the family Hominidae (the great apes). ... medicines, see medication and pharmacology. ... The term mycosis (plural: mycoses) refers to conditions in which fungi pass the resistance barriers of the human body and establish infections. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... A wart is generally a small, rough tumor, typically on hands and feet, that can resemble a cauliflower or a solid blister. ... It has been suggested that this article or section be merged into Eponychium. ... Categories: Stub | Dentistry ... Above is a ball-and-stick model of the inorganic hydrogenphosphate anion (HPO42−). Colour coding: P (orange); O (red); H (white). ... Laundry detergents are just one of many possible uses for detergents Detergent is a compound, or a mixture of compounds, intended to assist cleaning. ...

A very significant use of KOH in terms of significance to the layperson is that alkaline batteries use an aqueous solution of KOH as an electrolyte. Thus, potassium hydroxide helps to power flashlights, smoke detectors, and other battery-powered household items. A Duracell AA alkaline battery 2 Duracell-Brand AAA Alkaline batteries Alkaline batteries are a type of power cell dependent upon the reaction between zinc and manganese dioxide (Zn/MnO2). ...

It is also an anisotropic etchant of silicon, exposing octahedral planes. This technique can create pyramids and regularly-shaped etch pits for uses such as micro electromechanical systems. This article is being considered for deletion in accordance with Wikipedias deletion policy. ... It has been suggested that Silicons ranking be merged into this article or section. ... An octahedron (plural: octahedra) is a polyhedron with eight faces. ... In engineering, electromechanics combines the sciences of electromagnetism of electrical engineering and mechanics. ...

Food preparation

Food uses of lye include washing or chemical peeling of fruits and vegetables, chocolate and cocoa processing, caramel color production, poultry scalding, soft drink processing, and thickening ice cream. Olives are often soaked in lye to soften them and neutralize natural acids, while pretzels and German lye rolls are glazed with a lye solution before baking to make them crisp. Popular Japanese fashion magazine throughout the 1990s; the photography of which has recently been reissued in two collections from Phaidon press. ... Vegetables on a market Vegetable is a nutritional and culinary term denoting any part of a plant that is commonly consumed by humans as food, but is not regarded as a culinary fruit, nut, herb, spice, or grain. ... Chocolate most commonly comes in dark, milk, and white varieties, with cocoa solids contributing to the brown coloration. ... Cocoa beans in a cacao pod Cocoa is the dried and partially fermented fatty seed of the cacao tree from which chocolate is made. ... A piece of caramel confectionery. ... This article or section does not cite its references or sources. ... A soft drink is a drink that contains no alcohol. ... Missing image Ice cream is often served on a stick Boxes of ice cream are often found in stores in a display freezer. ... Binomial name Olea europaea L. 19th century illustration The Olive (Olea europaea) is a species of small tree in the family Oleaceae, native to coastal areas of the eastern Mediterranean region, from Lebanon and the maritime parts of Asia Minor and northern Iran at the south end of the Caspian... A modern factory produced hard pretzel. ... Lye rolls are a baked specialty in Germany, especially in Bavaria and Swabia. ...

Lye is used to make the Scandinavian delicacy known as lutefisk (from lutfisk, "lye fish"). Cod is soaked in lye to a jelly-like consistency, then served with bacon fat, potatoes, brown cheese (brunost) sauce and mushy peas. Hominy is dried maize (corn) kernels reconstituted by soaking in lye. Scandinavia is a historical and geographical region centered on the Scandinavian Peninsula in Northern Europe and includes the three kingdoms of Denmark, Norway and Sweden. ... Lutefisk (on the upper left side of the plate) as served in a Norwegian restaurant, with potatoes, mashed peas, and bacon. ... Look up bacon in Wiktionary, the free dictionary. ... Binomial name Solanum tuberosum L. The potato (Solanum tuberosum) is a perennial plant of the Solanaceae, or nightshade, family, commonly grown for its starchy tuber. ... Gudbrandsdalsost Gjetost is usually sliced very thinly using a metal cheese slicer. ... Binomial name Pisum sativum L. A pea is the small, edible round green bean which grows in a pod on the leguminous vine Pisum sativum, or in some cases to the immature pods. ... Hominy or nixtamal is dried, treated maize (corn) kernels. ... “Corn” redirects here. ...

See also

• Soda lime

Soda lime is a mixture of chemicals, used in granular form in closed breathing environments, such as general anaesthesia, submarines, rebreathers and recompression chambers, to remove carbon dioxide from breathing gases to prevent CO2 retention and carbon dioxide poisoning. ...

External links

• Newscientist article dn10104
• MSDS from JTBaker
• Links to external chemical sources