Sentence Examples The salt is used as a mordant in dyeing and calico-printing. He joined the Extreme Left, and his energy and mordant eloquence speedily made him the leader of the Radical section. Click to see full answer. Then, why do we use mordant?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). In the past, it was thought that a mordant helped the dye bite onto the fiber so that it would hold fast during washing.Additionally, how do you use pecuniary in a sentence? Sentence Examples His pecuniary troubles were now at an end. It is remarkable that he gives the same pecuniary bequests to Winchester and New Colleges as to his own college of Magdalen, but the latter he made residuary devisee of all his lands. Similarly, you may ask, how do you make a mordant solution? Add 2 parts water to 1 part vinegar to the jar, filling the jar to cover the iron objects. Put the lid on the jar and seal tight. The water will turn to a rusty-orange color in 1 to 2 weeks. You can let your iron mordant liquor sit for as long as you like.Is Vinegar a mordant?1- Vinegar is a mordant. Vinegar is a pH modifier, NOT a mordant. Some dyes require certain pH to strike, such as acid dyes, and even some natural dyes do best in an acid environment. Plus, weak acetic acid like vinegar will help keep your wool from degrading.