Sodium Sulfite Anhydrous na2so3

Formula: Na2SO3

Properties: 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 Nacontent % ≤	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.

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