H 1615 (OTTO) Hydroxylamine sulphate, 98% Cas 10039-54-0 - used in the production of anti-skinning agents, pharmaceuticals, rubber, textiles, plastics and detergents. It is a radical scavenger that terminates radical polymerization reactions and serves as an antioxidant in natural rubber. (NH3OH)2SO4 is a starting material for some insecticides, herbicides and growth regulators. H 1615 (OTTO) Hydroxylamine sulphate, 98% Cas 10039-54-0 - used in photography as a stabiliser for colour developers and as an additive in photographic emulsions in colour film.