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AG (Ciba-Geigy)

AG (Ciba-Geigy). Swiss multinational holding company created in 1970 in the merger of two concerns headquartered in Basel-Ciba AG and J.R. Geigy SA.


A mordant is a substance used to set dyes on fabrics or tissue. It is forming coordination with the colour which then attached to the cloth. It used for dyeing of fabrics or intensifying stains in a cell or tissue preparations.