Citric acid is a crystalline substance that is white in color and highly soluble in water and in ethanol, but very poorly soluble in diethyl ether. Such an acid was discovered in 1784 by the doorman Karl Scheele. In cooking, citric acid is a natural food acid and is added to regulate acidity and give a fresh effect to alcoholic and non-alcoholic beverages. Also citric acid protects products from decomposition under the action of heavy metals.
Citric acid has excellent taste, and therefore it is used to make sweets, ice cream, canned fruits and berries, jelly, jams. Citric acid is added to many cosmetic preparations – elixirs, lotions, creams, shampoos, hair fixers, etc.