In solid urea, the oxygen center is engaged in two N–H–O hydrogen bonds. The resulting hydrogen-bond network is probably established at the cost of efficient molecular packing: The structure is quite open, the ribbons forming tunnels with square cross-section.

Urea is a carbonyl group with two C-bound amine groups. The commercially available fertilizer has an analysis of 46-0-0 (N-P2O5-K2O). It has a role as a flour treatment agent, a human metabolite, a Daphnia magna metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite, a mouse metabolite and a fertilizer.

2018年12月9日 · Urea, a widely used nitrogen fertilizer, plays a crucial role in agriculture and various industrial applications. This article provides an in-depth look at the types of urea available in the market, their characteristics, and their respective uses. Understanding these differences is essential for selecting the right product for specific needs.

2022年7月27日 · Urea is a white crystalline solid. It is odorless and has a cooling taste. It melts at 132 o C and decomposes before boiling. Urea is soluble in water but insoluble in ether. It acts as monobasic acid. It consists of the amide group attached to the amine. It can give the reaction of both groups. Mostly it behaves as an amide.

Solid urea exist in different forms: prills, granules and pastilles. Further there is micro grade urea and super grade urea. This paper discusses the different forms of solid urea, its production process and its physical properties.

Solutions of Urea and Tetramethylurea in Formamide and Water: A Comparative Analysis of Volume Characteristics and Solute-Solute Interaction Parameters at Temperatures from 288.15 to 328.15 K and Ambient Pressure

The heats of combustion of urea and guanidine carbonate and their standard free energies of formation, J. Am. Chem. Soc., 1940, 62, 1009-1011. [all data] Schmidt and Becker, 1933

2024年4月22日 · Urea is a solid of molecular formula H 2 NCONH 2 with a molar mass (60.024 g/mol). It has a density under normal conditions of 0.74 g/cm 3. It has a melting point (mp = …

Urea is highly soluble in water and is therefore an efficient way for the human body to expel excess nitrogen. Due to extensive hydrogen bonding with water (up to six hydrogen bonds may form - two from the oxygen atom and one from each hydrogen), it is very soluble and thus is also a good fertilizer.

The solid-form landscape of urea was explored using full interaction maps (FIMs) and data from the CSD to develop optimum protocols for synthesizing co-crystals of urea. As a result, 49 of the 60 attempted reactions produced new co-crystals, and the crystal structures of four of these are presented. Moreover