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Quaternary ammonium cation. The R groups may be the same or different alkyl or aryl groups. Also, the R groups may be connected. In organic chemistry, quaternary ammonium cations, also known as quats, are positively-charged polyatomic ions of the structure [NR 4] +, where R is an alkyl group, an aryl group [1] or organyl group.
The quart (symbol: qt) [1] is a unit of volume equal to a quarter of a gallon.Three kinds of quarts are currently used: the liquid quart and dry quart of the US customary system and the imperial quart of the British imperial system.
Quat may refer to: Quaternary ammonium cations, known as quats; Elizabeth Quat (born 1966), Hong Kong politician; Phan Huy Quát, former prime minister of South Vietnam;
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide).The atoms are linked in a continuous framework of SiO 4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO 2.
Quaternary ammonium cation.The Rs may be the same or different groups. (The Rs may also be connected, making a cyclic ion.). In chemistry, a quaternary compound is a compound consisting of exactly four chemical elements.
Benzalkonium chloride (BZK, BKC, BAK, BAC), also known as alkyldimethylbenzylammonium chloride (ADBAC) and by the trade name Zephiran, [1] is a type of cationic surfactant.It is an organic salt classified as a quaternary ammonium compound.
The copper in the preparation is in the form of a soluble complex with ammonia NH 3 or an amine such as ethanolamine N(C 2 H 5)H 2.In any case, the copper content is usually expressed as a weight percentage of the amount of copper oxide CuO that would account for the copper present.
Didecyldimethylammonium chloride (DDAC) is a quaternary ammonium compound used as antiseptic/disinfectant.It causes the disruption of intermolecular interactions and the dissociation of lipid bilayers.