Sulfamic

Sulfamic acid, also known as amidosulfonic acid, is an inorganic compound with the formula H3NSO3. It is a white, crystalline solid that is highly soluble in water and stable at room temperature. In aqueous solution it behaves as a moderately strong acid, and it is commonly used where a non-volatile, solid acid is advantageous.

Industrial production typically involves reaction of chlorosulfonic acid with ammonia or aqueous ammonia, followed by hydrolysis and purification to give sulfamic acid. The compound can also form sulfamate salts, such as sodium sulfamate, by neutralization with suitable bases.

Sulfamic acid is widely used as a descaling agent and cleaner for equipment, including machinery and household appliances, because it removes mineral scale efficiently with less corrosive damage than mineral acids. It also serves as a reagent and catalyst in organic synthesis and as a source of the sulfamate group in various chemical transformations.

Safety considerations: It is corrosive to skin and eyes and can cause irritant effects if inhaled or ingested. It should be handled with appropriate protective equipment and stored in a cool, dry place away from incompatible materials. It is water-soluble, so spills can be rinsed away with copious water.