Aniline (also called aminobenzene) is an oily, flammable liquid. It occurs naturally in some foods. It is produced in very large amounts (1 billion pounds in 1992) by seven companies in the United States. U.S. demand is likely to increase 3% to 4% per year for the next several years. The largest users of aniline are companies that make isocyanates, especially methyl diphenyl diisocyanate. Other companies use aniline to make pesticides, dyes, and rubber. Companies also use smaller amounts of aniline to make drugs, photographic chemicals, varnishes, and explosives.