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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