RLN-27 Derusting Chemical - Derusting chemicals are used to remove rust (iron oxide) from metal surfaces. They typically fall into the following categories: 1. Acid-Based Derusting Chemicals * These work by chemically dissolving rust. - Phosphoric Acid – Converts rust into a protective iron phosphate layer. Common in rust converters and metal pre-treatment. - Hydrochloric Acid (Muriatic Acid) – Strong rust remover but can damage metal if overused. Requires neutralization. - Sulfuric Acid – Very aggressive and mainly used in industrial applications. - Oxalic Acid – Milder alternative used for cleaning rust stains on surfaces like wood and fabric. 2. Alkaline-Based Derusting Chemicals * These remove rust via chemical reactions without excessive metal etching. - Sodium Hydroxide (Caustic Soda) + Additives – Used in some industrial derusting solutions. # RLN-27 Derusting Chemical Manufacturer.