A mordant or dye fixative is a substance used to set (i.e. bind) dyes on fabrics by forming a coordination complex with the dye, which then attaches to the fabric (or tissue). ... The resulting coordination complex of dye and ion is colloidal and can be either acidic or alkaline.

What is mordant example?

A mordant or dye fixative is a substance used to bind dyes on tissues by forming a coordination complex with the dye, which then attaches to the tissue. It may be used for intensifying stains in cell or tissue preparations. Examples: Tannic acid.

What is the use of mordant?

A mordant is thus a chemical agent which allows a reaction to occur between the dye and the fabric. In textiles, mordants are used to fix the color in dyeing or fabric printing, especially for fabrics of plant origin (cotton).