Precipitation is also useful to isolate the products of a reaction during workup. Ideally, the product of the reaction is insoluble in the reaction solvent. Thus, it precipitates as it is formed, preferably forming pure crystals. An example of this would be the synthesis of porphyrins in refluxing propionic acid.
Freebase(0.00 / 0 votes)Rate this definition: Cellophane. Cellophane is a thin, transparent sheet made of regenerated cellulose. Its low permeability to air, oils, greases, bacteria and water makes it useful for food packaging.
Types of Noodles used in Chinese cooking. Cellophane Noodles - Also called bean threads, slippery noodles, or even bean vermicelli, cellophane noodles are made from mung bean starch. Before using, soak them in hot (not boiling) water. Cellophane noodles work well in soups and stir-fries, absorbing the flavor of the foods they are cooked with.