UAN 32% Solution is a nitrogen fertilizer solution composed of urea and ammonium nitrate. UAN 32% Solution can be used on just about all crops. It is widely used for side-dressing cotton, vegetables, corn, beets and other crops. Sprinkler applied UAN 32% Solution is used for tree crops such as almonds, for cereal grains, potatoes and for manyother crops. The nitrogen in soil applied UAN 32% Solution is rapidly available to plants. The nitrate portion (one-quarter of the total N) is immediately available as soon as it reaches the root zone. The urea portion (one-half of the total N) moves freely with the soil water until it is hydrolyzed by the urea enzyme forming ammoniacal nitrogen. After the hydrolysis of urea three-quarters of the total nitrogen is ammoniacal nitrogen and it is held to the clay particles in the soil and not subject to leaching. This ammoniacal nitrogen is available to plants. Ammoniacal nitrogen is converted to nitrate by soil organisms, usually within a few weeks after application. Item Technical Requirement Urea content(H2NCONH2),/ % 31.8~33.2 Density(20�°C)/(kg/m3) 1087.0~1093.0 Refractive index ,20�°C 1.3814~1.3843 Freezing Point, �°C -11�±1 Alkalinity (NH3), % â?¤ 0.2 Biuret(C2H5N3O2), % â?¤ 0.3 HCHO, mg/kg â?¤ 5 Undissolved Substance/ mg/kg â?¤ 20 Phosphate(PO4)/ mg/kg â?¤ 0.5 Na , mg/kg â?¤ 0.5 Fe, mg/kg â?¤ 0.5 Cu, mg/kg â?¤ 0.2 Zn, mg/kg â?¤ 0.2 Cr, mg/kg â?¤ 0.2 Ni, mg/kg â?¤ 0.2 Al, mg/kg â?¤ 0.5 Mg, mg/kg â?¤ 0.5 Na, mg/kg â?¤ 0.5 K, mg/kg â?¤ 0.5 Note Infra-red spectrum determination on the nature.