Search results
Results From The WOW.Com Content Network
An oil drying agent, also known as siccative, is a coordination compound that accelerates the hardening of drying oils, often as they are used in oil-based paints.This so-called "drying" (actually a chemical reaction that produces an organic plastic) occurs through free-radical chemical crosslinking of the oils.
Calcium hydride is the chemical compound with the formula CaH 2, an alkaline earth hydride. This grey powder (white if pure, which is rare) reacts vigorously with water, liberating hydrogen gas. CaH 2 is thus used as a drying agent, i.e. a desiccant. [2] CaH 2 is a saline hydride, meaning that its structure is salt-like. The alkali metals and ...
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
frequently used as a disinfectant or a bleaching agent Sodium nitrite: used to convert amines into diazo compounds Sulfuric acid: strong mineral acid; applications include its use as a dehydrating agent in many chemical reactions, sulfonation, the purification of hydrocarbons, and the production of phosphoric acid tert-Butyl hydroperoxide
Magnesium perchlorate is a powerful oxidizing agent, with the formula Mg(ClO 4) 2. The salt is also a superior drying agent for gas analysis. Magnesium perchlorate decomposes at 250 °C. [2] The heat of formation is -568.90 kJ/mol. [3] The enthalpy of solution is quite high, so reactions are done in large amounts of water to dilute it.
Anhydrous solvents are commercially available from chemical suppliers, and are packaged in sealed containers to maintain dryness. [4] Typically anhydrous solvents will contain approximately 10 ppm of water and will increase in wetness if they are not properly stored. Organic solutions can be dried using a range of drying agents.
A drying oil is an oil that hardens to a tough, solid film after a period of exposure to air, at room temperature. The oil hardens through a chemical reaction in which the components crosslink (and hence polymerize) by the action of oxygen (not through the evaporation of water or other solvents).
Xerotine siccative was an oil drying agent used in the late 19th century. It is a type of terebene ; unlike standard terebenes, xerotine siccative doesn't become cloudy when mixed in an oil. [ 1 ] Replacing boiled oil, xerotine siccative was mixed with paint in order to speed up the drying process; [ 1 ] however, its use ceased when it was ...