Urea is one kind of the final products of protein metabolism in mammals and human. It is also a major organic nitrogen compound excreted by animal body. Pure product is white granular or needle-like crystal. It exhibits pink or yellow when being mixed with iron and other heavy metals. It is tasteless, odorless, and easily soluble in water, ethanol and benzene, but insoluble in ether and chloroform. Urea is endothermic when being dissolved. Its aqueous solution is neutral. The nitrogen content of pure product is 46.65%, is 42% -46% for that of agricultural urea which contains a small amount of biuret (typically less than 2%) with no harm to the crop. Both the specific gravity and bulk density are small, with 0.65 tons of fertilizer per cubic meter.
Used for the denaturation of proteins and as a mild solubilization agent for insoluble or denatured proteins. Useful for renaturing proteins from samples already denatured with 6 M guanidine chloride such as inclusion bodies.
Package & Storage
Storage: stored at dry, cool and avoid light.