Check washing process of washing a check is relatively simple and can be accomplished with basic solvents. The actual solvent is largely irrelevant — more importantly, the polarity of the solvent must match the polarity of the dye in the ink. For example, an ink that is mostly made of a polar dye would require a polar solvent (e.g. acetone or isopropanol). Both nail polish remover (acetone) and rubbing alcohol (isopropanol) are able to pull most common inks away from paper in minutes. Similarly, a non-polar dye would require a non-polar solvent (e.g. toluene or a similar hydrocarbon). Check washing Check washing
Shoe polish and polishing properties after solvent has evaporated. Solvents are selected to match the waxes. About 70% of shoe polish is solvent. A variety of solvents are used including naphtha. Turpentine, although more expensive, is favored for its "shoe polish odor." Dyes make up the final 2-3% of the polish. A traditional dye is nigrosine, but other dyes (including azo dyes) and pigments are used for oxblood, cordovan, and brown polishes. Owing to their high content of volatile solvents, wax-based shoe polish harden after application, while retaining its gloss. Poorly blended polishes are known to suffer from blooming, evidenced by the