The term 'CHEMICALS BIG NAME IN' can be completed with the crossword solutions of DOW (3 letters) and REAGENTS (8 letters). The Dow Chemical Company, commonly referred to as Dow, is an American multinational chemical corporation founded in 1897. It is one of the largest chemical manufacturers in the world and produces a wide range of products including plastics, chemicals, and agricultural products. Reagents are substances or compounds that are used in chemical reactions to detect, measure, generate, or produce other substances. They are used in laboratories to identify, analyze, and synthesize chemical compounds.