Hydroxylamine sulfate (NH3OH)2SO4, is the sulfuric acid salt of hydroxylamine. It is primarily used as an easily handled form of hydroxylamine, which is explosive when pure.
Hydroxylamine sulfate can be obtained by the acid-base reaction of hydroxylamine with sulfuric acid:
2NH2OH(aq) + H2SO4 (aq) → (NH3OH)2SO4 (aq)
Coatings, Adhesives, Resins: HAS is used as a viscosity stabilizer for natural rubber, and as a non-contaminating short-stopper for synthetic rubber. A derivative of HAS is also used as a vulcanizer. Its many properties, including selective reactivity to textile fiber functional groups, make it useful for applications such as dye improvers, textile discoloration inhibitors, and modifiers for acrylic fibers and cellulose. Other uses include resin improvers, UV stabilizers, and polymerization catalysts.
Life Science Chemicals: HAS is used as a raw material for herbicides, insecticides, germicides, acaricides, and other products in the form of derivatives of hydroxamic acid, hydroxy uric acid, carbamate, alkyl hydroxylamine, oxadiazole, and organophosphorus compounds, among others. It is also used as a raw material for germicides, CNS sedatives, antihistamines, sedatives, drugs for high blood sugar, wound infection inhibitors, diuretics, stimulants, blood coagulants, anti-malarial drugs, and diabetes drugs, and other products in the form of derivatives of hydroxamic acid, hydroxy uric acid, isoxazole, oxadiazole, oxime, and amide, among others. Due to its ability to reduce hydroxylamine sulfate and form metal complexes, HAS is used as a metal surface treatment agent, precipitant for separating metal, metal extractant, and rust proofer.