Chemical properties white single inclined crystallization. Have the sulfur dioxide smell. Soluble in water, soluble in alcohol.
Use sodium is our country allow hydrogen sulfite of reducing use bleaching agent. For food, bleaching events for food of plant has strong within the oxidase inhibition. China's regulation can be used for candied fruit, glucose, sugar, rock sugar, YiTang, candy, liquid glucose, dried fruit, dried, fans, bamboo shoot, mushrooms and canned mushrooms, maximum usage 0.45 g/kg; Can also be used to potato starch, maximum usage 0.2 g/kg, potato starch residues in SO2 plan) (less than 0.03 g/kg.
Use sodium is our country allow hydrogen sulfite of reducing use bleaching agent. For food, bleaching events for food of plant has strong within the oxidase inhibition. China's regulation can be used for candied fruit, glucose, sugar, rock sugar, YiTang, candy, liquid glucose, dried fruit, dried, fans, bamboo shoot, mushrooms and canned mushrooms, maximum usage 0.45 g/kg; Can also be used to potato starch, maximum usage 0.2 g/kg, potato starch residues in SO2 plan) (less than 0.03 g/kg.