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общая лексика
конго красный
синоним
существительное
общая лексика
служба подготовки офицеров резерва
синоним
сокращение
[center of casing head flange] центр фланца головки обсадной колонны
Congo red is an organic compound, the sodium salt of 3,3′-([1,1′-biphenyl]-4,4′-diyl)bis(4-aminonaphthalene-1-sulfonic acid). It is an azo dye. Congo red is water-soluble, yielding a red colloidal solution; its solubility is greater in organic solvents. However, the use of Congo red has long been abandoned, primarily because of its carcinogenic properties.