Sodium Sulfite

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Sodium Sulfite
(Technical Grade)
CAS No.:7757-83-7
Molecular formula: Na2SO3 Molecular Weight: 126.04
Structural Formula:

Property:
Anhydrous Sodium Sulfite is white or light yellow powder, relative condense 2.633 in moist. Anhydrous Sodium Sulfite dissolves in water and glycerine and little in ethanol. Anhydrous Sodium Sulfite Decomposed in humid, oxygenized into sodium sulfate by exposed in air, sulphur dioxide will be released when Sodium sulfite contacts with strong acid and then created the relative salt.
Specification:
96% Grade 93%Grade
Na2SO3 96% 93%
Free alkali 0.4% 0.4%
Iron(Fe) 200ppm 200ppm
Water insolubles 0.05% 0.05%
Usage:
Anhydrous Sodium Sulfite is kind of bleaching agent for paper pulps, waste water treatment, reducing and sulphonating agent for chemical synthesis. Anhydrous Sodium Sulfite is also kind of bleaching agent for textiles, colors stripper and deoxidization, floating agent for mining industry and auxiliary chemical in tanning process .
Package and Storage:
Anhydrous Sodium Sulfite is packed in 25kg compound plastic woven bag with inner polythene liner ; 1000kg or 1100kg Jumbo bags.
Store Anhydrous Sodium Sulfite in a cool and dry place;avoid contact sunshine ,water and moisture;avoid contact with strong acid,oxidants or poisonous substances. Exposure to moisture will make it oxidze easily to sodium sulphate . Anhydrous Sodium Sulfite can not be store for a long time .
Keywords:
Anhydrous Sodium Sulfite;sodium sulfite;sodium sulphite