Sulphamic Acid 99.5% ACS (Descaler, Rust Remover) - 100gm - 1kg *Free PP* *Descaler, Cleaner, Rust Limescale Remover in industrial cleaning and maintaining applications.* - Product Code: GPC9293-x - Pack Size: 100gm - 1kg Description Sulfamic acid, also known as amidosulfonic acid, amidosulfuric acid, aminosulfonic acid, and sulfamidic acid, is a molecular compound with the formula H3NSO3. This colorless, water-soluble compound finds many applications. Sulfamic acid melts at 205 °C before decomposing at higher temperatures to H2O, SO3, SO2, and N2.[2] Sulfamic acid (H3NSO3) may be considered an intermediate compound between sulfuric acid (H2SO4), and sulfamide (H4N2SO2), effectively replacing an –OH group with an –NH2 group at each step. This pattern can extend no .