Industrial Grade Sodium Metabisulfite

Model No. 7681-57-4

Appearance Powder

Grade Standard Industrial Grade

National Standard GB1893-2008

Molecular Formula Na2s2o5

Synonyms Sodium Metabisulphite

Our products are packed in various sizes, ranging from 25kg to 1350kg bags. We make sure that each transport package is tightly sealed to avoid any spillage or damage during transit. We understand the importance of safe and secure delivery, which is why our team ensures that every bag is properly labeled and handled with care. Whether you need a small or large transport package, we have got you covered!

Specification HG/T2826-2008

Origin China

HS Code 2832100000

We have the capability to produce 800000 tons per year and another production line that can churn out 80000 tons per year as well. This means we have the ability to fulfill large orders and meet the needs of our customers. Our production capacity speaks volumes about our commitment to delivering high-quality products consistently. Whether you require a massive quantity or a smaller order, we have you covered with our unmatched production capabilities. So, you can rest assured that we have what it takes to cater to your needs and provide you with the best value for your money.

In China, sodium metabisulfite is commonly used for the preservation and processing of light-colored vegetables such as lotus root, mushrooms, water chestnut, yam, and white asparagus. The addition of a sodium metabisulfite solution offers color protection during the preservation process. Each factory may have variations in their specific process, but for example, when processing canned mushrooms, fresh mushrooms may be soaked twice in an aqueous solution containing 0.03 g/kg sodium metabisulfite for 1-2 minutes each time.

Sodium metabisulfite finds extensive use in improving biscuit dough quality. Typically, it is added to the dough in a 20% solution form during the dough's immature stages. As the sulfur dioxide released during the dough preparation can lead to a decrease in the gluten strength, the addition of sodium metabisulfite ensures that the biscuits do not become excessively tough due to high gluten levels. The quantity of metabisulfite added varies according to the flour's gluten strength, with small amounts for stronger flours and none for high oil-to-sugar ratio dough types. This is because the sugar and oil themselves prevent the protein from swelling with water, preventing large gluten formations. Overall, biscuit quality and texture can be greatly improved with the addition of sodium metabisulfite.

Physicochemical properties

This substance is found in the form of white or slightly yellow crystals. It readily dissolves in water, yielding an acidic aqueous solution. Moreover, it exhibits solubility in glycerol and limited solubility in ethanol. When exposed to air, it undergoes oxidation, leading to the formation of sodium sulfate. This compound is sensitive to moisture and easily decomposes. Its melting point is recorded at 150 °C. When it comes into contact with strong acids, it undergoes chemical reaction, resulting in the production of sulfur dioxide and corresponding salts.

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