Molecular formula: Na2SO3
CAS no.: 7757-83-7
Properties: White crystalline powder.
Package: In net 25 kg plastic woven bag with inner bag or according to customers¡¯ demand.
Applications: It is used as convenient source of sulphur dioxide, as a preservative particularly for
processed meats and fruit juices, as an antichlor following bleaching by sodium hypochlorite, as
a preservative in developing solutions, as a reducing agent in the manufacture of some dyestuffs,
as an oxygen scavenger in boiler feed waters and as an antichlor and also as the chemical in the
processing of wood pulp.
Specification data:
|
Name |
Premium grade |
First grade |
Second grade |
|
Sodium sulphite |
98 |
96 |
93 |
|
Fe |
0.003 |
0.005 |
0.01 |
|
Water insoluble matter |
0.02 |
0.3 |
0.05 |
|
Free alkali |
0.1 |
0.4 |
0.6 |
|
Sulfate radical |
2.5 |
/ |
/ |
|
Sodium chloride |
0.1 |
/ |
/ |
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