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1.Sodium Sulfite
CAS: 7757-83-7
EINECS: 231-821-4
MOLECULAR FORMULA: Na2SO3
MOLECULAR WEIGHT: 126.04
APPEARANCE: Off-white crystals or powder.
PURITY: 93%,96%,97%
2.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.
3.specification
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Items |
Norms (industrial grade) |
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Superior-grade |
First-grade |
Qualified-grade |
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Na2SO3 -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 Nacontent % ≤ |
0.10 |
0.40 |
0.80 |
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Na2SO4 -content % ≤ |
2.5 |
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NaCL-content % ≤ |
0.10 |
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4.Usage
1> In Photography- In formulation of developers and fixers solutions.
2>In Water Treatment -Oxygen scavenger in Boiler water and drilling water.
3> In Effluent water-treatment of excess chlorine & detoxification of chromic acid in electro plating industries.
4>In Pulp & Paper-In processing of semi-chemical pulp production in chemi-thermo-mechanical and kraft pulping process.
5> In Chemical industry-in manufacture of Sodium thiosulphate , sulphonating agent
6> In Detergents- manufacture of sulfosuccinates – sampoo.
7>In Dyetuffs-reducing agent in manufacure of indigo - vat dyes
8> In Rubber-stabilizing latex. – anticogulant.
9>In Minerals-Ore floatation aid.
10>In Leather industry-antibacterial in tanning process.
11>In Food processing-as preservative, antioxidant and enzyme inhibator.
5.Package
1> We can make the shipping mark according to your requirement.
2> We can supply the package of 25 Kg /50kg compound plastic woven bag with inner Polypropylene liner.
3> We can supply the package of JUMBO Bag.
4> The general package is three layer, which can protect the goods very well.
6.Storage & handling
1> Store the product in a cool and dry place.
2> Prevent from direct sunlight,water and moisture.
3> Avoid contact with strong acid,oxidants or poisonous substances.
4> Exposure to moisture will make it oxidze easily to sodium sulphate.
5> Do not store it for long time.
7.Shelf Life:
one year
8.package photos
9.About our company