(1) Fats can be reduced in a solution of sodium hydroxide to produce glycerol and another kind of lipid, soap.(2) Fatty acids form esters with alcohols, and the common esters are glycerides, because the alcohol involved is glycerol .(3) The acetins are derivatives of glycerol that are prepared by heating glycerol with acetic acid.(4) The fats or oils from these sources are isolated and hydrolyzed to produce glycerol and fatty acids.(5) Such agents include glucose, propylene glycerol , polyethylene glycol and hypaque.
