Detailed Product Description
Product Description
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.
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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Items |
Norms (industrial grade) | ||
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Superior-grade |
First-grade |
Qualified-grade | |
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Na 2 SO 3 -content % ≥ |
97.0 |
96.0 |
93.0 |
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Fe-content % ≤ |
0.003 |
0.005 |
0.02 |
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Water-insoluble matter content % ≤ |
0.02 |
0.03 |
0.05 |
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Free alkali (as Na)content % ≤ |
0.10 |
0.40 |
0.80 |
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Na 2 SO 4 -content % ≤ |
2.5 |
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NaCL-content % ≤ |
0.10 |
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