Sulfamic acid is an inorganic solid acid with the chemical formula NH2SO3H and a molecular weight of 97.09. It generally appears as white, odorless rhombic flake crystals with a relative density of 2.126 and a melting point of 205°C. It is soluble in water and liquid ammonia. At room temperature, as long as it remains dry and does not come into contact with water, solid sulfamic acid is non-hygroscopic and relatively stable. It is characterized by being non-volatile, odorless, and having low toxicity to humans. Dust or solutions can irritate the eyes and skin, causing burns, with a maximum allowable concentration of 10mg/m3. Sulfamic acid can be used in the synthesis of herbicides, fire retardants, sweeteners, preservatives, metal cleaning agents, etc., making it a common chemical raw material.