The sodium metabisulfite market can be segmented into food preservatives, wine making and distilleries, textiles, pulp & paper industry, chemicals and pharmaceuticals, and others (water/sewage treatment plants, film and photographic industry, canning industry, etc.). In terms of region, the global sodium metabisulfite market can be divided into North America, Latin America, Europe, Asia Pacific, and Middle East & Africa. Upon mixing with water, sodium metabisulfite releases sulfur dioxide (SO?). SO? is a gas with an unpleasant odor. It may directly affect breathing in some people. This has adversely affected the usage of sodium metabisulfite.