Sodium Sulfite

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Sodium Sulfite

CAS NO.： 7757-83-7

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Specification： 70%-75%

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Lead Time： 14-30 days

Max Capacity： -

Packing： 50KG/Plastic Drum; 25KG/Woven Bag

Product Detail

Properties

Sodium Sulfite

Chinese Name: 亚硫酸钠

CAS NO：7757-83-7

Molecular formula: Na2O3S

Molecular weight: 126.04

Melting point: 500 ℃

Appearance: white crystal or powder

Application: sodium sulfite can be used as developer, preservative of dried fruit and meat, Deoxidizer in printing and dyeing industry

Properties

Sodium sulfite is an inorganic compound. It is a white granular powder at room temperature, soluble in water and reducing. It is disproportioned into sodium sulfide and sodium sulfate when heated and gradually oxidized into sodium sulfate when placed in air. It can exist in three forms: anhydrous matter, heptahydrate and decahydrate, of which anhydrous matter is the most difficult to be oxidized. Its aqueous solution is alkaline due to hydrolysis and releases toxic sulfur dioxide gas during acidification. Sodium sulfite can be prepared by introducing sulfur dioxide into sodium hydroxide solution. When sulfur dioxide is excessive, sodium bisulfite will be generated. Sodium sulfite can be used as developer, preservative of dried fruit and meat, Deoxidizer in printing and dyeing industry, and reducing chemical reagent. It is used in chemical industry and laboratory production and synthesis.

CAS No.

7757-83-7

Formula

Na2O3S

Molecular Mass

126.04300

Exact Mass

125.93600

PSA

82.40000

Logp

-0.13840