American chemical and plastics manufacturer that is one of the world's leading suppliers of chemicals, plastics, synthetic fibres, and agricultural products. Headquarters are in Midland, Mich.

Dow Chemical Company was founded in 1897 by chemist Herbert H. Dow (Dow, Herbert H.) of Midland to supplement the Midland Chemical Company (1890) and Dow Process Company (1895). Created in part because Dow required a bleach plant to use the wastes from the bromine extraction processes performed by Midland Chemical, the new company also began extracting other chemicals such as chlorides, magnesium, and calcium from Michigan's plentiful brine deposits. In 1900 Dow Chemical was incorporated, combining all of Dow's Midland properties.

After surviving a bromide pricing war against several European concerns during the first decade of the 20th century, Dow began to manufacture phenol and magnesium, initially for use in World War I munitions. While the vast majority of Dow products are benign, a number have been the subject of adverse public attention and lawsuits. The company made mustard gas, a toxic blistering agent used in chemical warfare, during World War I. During the Vietnam War, it produced napalm, a jellied incendiary reported to have been used indiscriminately against civilians and soldiers. Dow also was one of several makers of Agent Orange, an herbicide containing the toxic substance dioxin. In 1984 Dow and the other chemical companies settled a class-action lawsuit out of court by agreeing to establish a $180,000,000 fund for the use of the veterans and their families. In 1995 Dow Corning (a joint venture of Dow Chemical and materials manufacturer Corning, Inc.) declared bankruptcy following an overwhelming number of lawsuits claiming that silicone breast implants manufactured by Dow Corning and other companies were responsible for a variety of health problems.

Dow Chemical Company operates major plants in the United States and abroad, employs more than 40,000 people worldwide, and operates manufacturing plants in 175 countries. Its products include artificial turf, materials for golf balls and other recreational equipment, adhesives, packaging products, coatings and insulation for wire and cable, building materials, agricultural products including herbicides and insecticides, and chemicals used in the pharmaceutical industry and automotive industry.