Sodium metabisulfite is a white crystalline compound that releases sulfur dioxide when dissolved in water. It is được sản xuất bởi reacting sodium hydroxide with sulfur dioxide under controlled conditions.
In the food ngành công nghiệp, sodium metabisulfite được sử dụng rộng rãi as a chất bảo quản and chất chống oxy hóa to prevent enzymatic and non-enzymatic browning in fruits, vegetables, and seafood. It also serves as a bleaching agent in starches, sugar chế biến, and flour treatment. In winemaking, sodium metabisulfite is an essential antimicrobial and chất chống oxy hóa agent used throughout the vinification and bottling process.