HRK Supply Sodium Sulfite raw Materials powder

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Sodium Sulfite Powder Usage and Synthesis.

Anhydrous sodium sulfite can be used as a developer, to prepare cellulose sulfite esters, to prepare sodium thiosulfate, a preservative for dried fruits and meats, a deoxidizer in the printing and dyeing industry, and as a reducing chemical reagent. It is used in the production and synthesis of chemical and laboratory applications.

Uses of Sodium Sulfite.

Reductive bleaching agent has a bleaching effect on food and a strong inhibitory effect on oxidase in plant foods. my country stipulates that it can be used in candied fruit with a maximum usage of 2.0g/kg; it can also be used in glucose, liquid glucose, sugar, crystal sugar, maltose, candy, bamboo shoots, mushrooms and canned mushrooms, grapes, and blackcurrant concentrates with a maximum usage of 0.60g/kg. The residual amount (in terms of SO2) of bamboo shoots, mushrooms and canned mushrooms, candied fruit, grapes and blackcurrant concentrates is ≤0.05g/kg; the residual amount of potato starch is ≤0.03g/kg; the residual amount of biscuits, sugar, vermicelli and other varieties is less than 0.1g/kg; the residual amount of liquid glucose shall not exceed 0.2g/kg.

Preparation method of Sodium Sulfite.

Sodium sulfite can be produced by passing sulfur dioxide into sodium hydroxide solution. When the sulfur dioxide is excessive, sodium bisulfite is generated. Alternatively, sulfur dioxide gas is passed into sodium carbonate solution, and then sodium carbonate solution is added after saturation. Heptahydrate crystals are obtained by crystallization, and anhydrous sodium sulfite is obtained by heating and dehydration.

Product method of Bulk Sodium Sulfite Powder.

The absorption method uses food-grade soda ash solution to absorb sulfur dioxide, and then adds refined sodium hydroxide solution to saturate it. Crystallized sodium sulfite is obtained by crystallization, and then heated and dehydrated to obtain edible anhydrous sodium sulfite.

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