Engichem Specialities Pvt. Ltd. Offers Flash Rust Inhibitors in Liquid Form. Engichem Specialities Pvt. Ltd. Supplies chemical raw material, intermediates and special chemicals. Flash Rust Inhibitors in Liquid Form are the additives that are added to water based coatings to stop the form of corrosion that occurs during the drying process. Flash Rust Inhibitors in Liquid Form is used for corrosion resistant and tannin stain resistant coatings. Without a flash rust inhibitor, water-soluble corrosion products migrate to the surface of the coating and appear as a stain or rust spot.