A mordant is a substance used to set dyes. A mordant is either collodial, or produces colloids and can be either acidic or basic.

Tannic acid, alum, chrome alum, and certain salts of aluminum, chromium, copper, iron, potassium, and tin.

This article is a stub. You can help Wikipedia by fixing it.


A mordant in music is also a type of musical ornament: see Ornament