Used as a moisturizer, pH adjuster and defoliant in cosmetics. Found in processed food and in over-the-counter drug products. Used as a reagent and in organic synthesis. Used in the leather, textile and tanning industries. Used as a plasticizer and catalyst in the casting of phenolaldehyde resins. (FDA information package, 1996). Associated with tobacco: reported either as a natural component of tobacco, pyrolysis product (in tobacco smoke), or additive for one or more types of tobacco products.