Cyanuric Acid

Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.

cyanuric acid

[¦sī·ə¦nu̇r·ik ′as·əd]
(organic chemistry)
HOC(NCOH)2N·2H2O Colorless, monoclinic crystals, slightly soluble in water; formed by polymerization of cyanic acid. Also known as pyrolithic acid.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Cyanuric Acid


(formula I), a cyclic trimer of cyanic acid; a colorless crystalline compound, which is soluble in hot water and alcohol.

Upon heating to 150°C, cyanuric acid depolymerizes without melting. Upon the action of alkalies, it forms monobasic, dibasic, and tribasic salts. In some of its reactions, for example, with diazomethane, it reacts in its tautomeric form—isocyanuric acid (II). Cyanuric acid may be produced by heating urea, as well as by other methods. The triamine derivatives of cyanuric acid— melamines—are of industrial importance, mainly in the production of melamine-formaldehyde resins. The acid-chloride derivative of cyanuric acid—cyanuric chloride—is also of industrial importance.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The classes were infant formula powder, infant formula with melamine, and infant formula with cyanuric acid. The SIMCA model was modeled with 35 spectra of each class (infant formula, infant formula with melamine, and infant formula with cyanuric acid).
Up to 231 [degrees]C, deposits could be characterised by the degree of conversion of urea and biuret into cyanuric acid (low-temperature deposits), Table 2.
To minimize the impact matrix may have on the response of melamine and cyanuric acid, it is good practice to develop a method that utilizes labeled reference standards of both melamine and cyanuric acid as internal standards.
In addition, the measurement is not affected by the presence of salt or cyanuric acid in the water.
Chemical analysis of the water at the Atalaya Court Hotel, in Playa de las Americas, showed it contained five times the recommended level of cyanuric acid used to regulate chlorine.
Chemical analysis of the water at the hotel showed it contained five times the recommended level of cyanuric acid used to regulate chlorine.
The samples were soaked for 12 hour increments (0, 12, 24,36,48, and 128 hours) in simulated pool water prepared using calcium hypochlorite, tap water, cyanuric acid, and baking soda.
Tilbury says both strains are equipped with three genes necessary to breakdown or metabolise the man-made chemical to its final product, cyanuric acid, which is then used as a nitrogen source by bacteria.
Of late, these arguments have even taken on environmental strains because endothermics leave no ammonia or cyanuric acid byproducts.
The new finding involves mixing combustion gases with isocyanic acid (HNCO), a gas formed when the nontoxic cyanuric acid, or (HNCO).sub.3., is heated.
These high molecular weight compounds are formed at higher temperature in the range of 250[degrees]C to 350[degrees]C are insoluble and are mainly composed of cyanuric acid, ammeline, melanine and higher molecular weight oligomers such as melam, melem and melon.