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anhydrous sodium sulfite

Formula: Na2SO3Properties: Sodium Sulfite is a reducing agent soluble in water. Its solution in water is basic. It is feeble soluble in liquid chlorine or ammonia. Usage: It is used as a desoxydating or bleaching agent for printing and dyeing industry, as a developer for photographic industry . as a lignin-removing agent for paper industry, as a stabilizer for syntheticfiber for textile industry, as a reducing agent for chemical industry, or for electroplating industry etc.  Items Norms (industrial grade) Superior-grade First-grade Qualified-grade Na2SO3 -content % ≥ 97.0 96.0 93.0 Fe-content % ≤ 0.003 0.005 0.02 Water-insoluble matter content % ≤ 0.02 0.03 0.05 Free alkali ( as Na)content % ≤ 0.10 0.40 0.80 Na2SO4 -content % ≤ 2.5 —— —— NaCL-content % ≤ 0.10 —— ——  Package Storage and transportation:(1)Plastic film-lined PP woven bag, Net weight per bag: 25Kg or 50Kg.(2)Not allowed in a room with any oxidant or strong acid, and keep away from an oxidation by air or humidity.(3)Keep away from sunlight and humidity during its transportation.(4)Storage life: no more than half year from ex-factory date.

SODIUM SULFITE ANHYDROUS