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Sodium Hydrosulfite

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China Sodium Hydrosulfite Suppliers

Sodium disulfite is an inorganic substance with the chemical formula Na2S2O4, which is a white crystalline powder.

Its aqueous solution is unstable and belongs to a strong reducing agent. Exposure to air is easy to absorb oxygen and oxidize. At the same time, it is also easy to absorb moisture to heat and deteriorate, and can capture oxygen agglomeration in the air and emit irritating acidity.
Heating sodium disulfite or contact with an open fire will cause combustion, spontaneous combustion point 250°C. Contact with water can emit a large amount of heat of sulfur dioxide gas and flammable sulfur vapor, causing intense combustion. When exposed to oxidants, a small amount of water or absorbing humid air, it can heat up, causing yellow smoke to burn and even explode. Sodium disulfite is toxic and irritating to the eyes and respiratory mucosa.

It is widely used in the textile industry for vat dyeing, reduction agent, printing and stripping, textile materials bleaching, It is also used in bleaching for paper pulps, Kaolin, leather, bamboo wares, foodstuffs and beverages. In Chemical industry, it is used in the line of photograghics, chemical processing, cleaners, Water Treatment, gas purification, and environmental improvement.

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