Abstract: The present invention relates to a new fertilizer compound of the ureaform type and to a method for the production thereof. The new ureaform compound is characterized by the low average degree of polymerization between urea and formaldehyde. The new compound has a nitrogen content of over 41% by weight and consists of cold water soluble nitrogen as the main fraction and cold water insoluble as the second fraction which is substantially free of hot water insoluble nitrogen. The new ureaform compound is obtained by the condensation of urea and formaldehyde at a correct ratio between the reagents and termination of the reaction at a stage wherein excessive polymerization is prevented. The reaction is carried out in a controlled system with a pH in the range of 3.5 to 4.2. Particularly useful are the systems H.sub.3 PO.sub.4 -KH.sub.2 PO.sub.4 and H.sub.3 PO.sub.4 -NH.sub.4 H.sub.2 PO.sub.4.

Abstract: The present invention relates to a process for the direct manufacture of crystalline urea phosphate. The process consists in the reaction of solid urea with ortho-phosphoric acid in a substantially anhydrous form. A concentrated phosphoric acid with above 90% by weight H.sub.3 PO.sub.4 can be used as starting reagent. A preheating of the phosphoric acid at 60.degree.-90.degree.C is preferred in order to induce the spontaneous reaction with the solid urea. The urea phosphate product obtained is ready for use without any further operation. Desired micronutrients such as Mg, Co, Fe, Zn, Cu, Mn may be incorporated in the initial ortho-phosphoric acid prior to the reaction with the solid urea.