Is Sodium Metabisulfite a Mordant?
No, sodium metabisulfite is not considered a mordant. A mordant is a substance used in dyeing and printing textiles to fix dyes on fibers, usually by forming a coordination complex with the dye, which then attaches to the fabric. Common mordants include substances like alum (potassium aluminum sulfate), iron salts, tin salts, and copper salts.
Sodium metabisulfite is primarily used as an antioxidant, preservative, and bleaching agent. It is sometimes used in the textile industry, but its main role is as a reducing agent or to remove excess chlorine, not as a mordant.
Summary: Sodium metabisulfite is not a mordant; it serves different functions in various industrial processes.
