Nitrogen-containing compounds. solubility

Alkaloid. A large, varied group of complex nitrogen-containing compounds, usually alkaline, that reacts with acids to form soluble salts, many of which have physiological effect on humans, e.g., nicotine and, caffeine, etc. 

Soluble Proteins and Nitrogen-Containing Compounds in Psoriatic Scales"... 

The N-containing extractives are defined as the water-soluble, low molecular weight, nitrogen-containing compounds of non-protein nature. This NPN-fraction (non-protein nitrogen) constitutes from 9% to 18% of the total nitrogen in the teleosts. 

Vitamin Be refers to a group of nitrogen-containing compounds with three primary forms pyridoxine, pyridoxal, and pyridoxamine. They are water-soluble and are found in a variety of plant and animal products. 

Acidic species can result from traces of catalyst residues or from oxidation of released formaldehyde to formic acid. Nitrogen containing compounds, such as amidines, soluble polyamides, and amines, efficiently neutralize acidic species. In the mid 1960 s, Celanese was assigned U.S. 3,313,767 describing one such class of compounds[14]. 

It should be noted that sulfur- and nitrogen-containing compounds act like the oxygenated materials relative to the solubility of ferric thiocyanate. Acids and oxidizing compounds interfere with the test. 

The highest fixed nitrogen-containing fertilizer 46.7 wt %, urea is a white solid that is soluble in water and alcohol. It is usually sold in the form of crystals, prills, flakes, or granules. Urea is an active compound that reacts with many reagents. It forms adducts and clathrates with many... 

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