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Sodium
Sulphite
formula: Na2SO3
Chemical
function:
White crystal or powder; brilliant;
triangle prism; Solution alkalescence,
PH:9-9.5. When 33.4℃, max solubility is
28%. Will easy be oxidated to sodium
sulfate exposed in air; will be decompounded to
sulfuration and sodium sulfate in high
temperature; When meet strong acid, it will be
decompounded to related salt meanwhile emiting
sulfur dioxide that is strong reducer; When meet
SO2 create to sulfurous acid sodium.
Consistency is 2.633（15.4℃）, refraction
rate is 1.565, molecular weight is 126.04.
| Target Name |
Target |
|
Excellent Class
|
First Class
|
Qualified Class
|
|
Sodium sulfite (Na2SO3)
content,%≥
|
97.0 |
96.0 |
93.0 |
|
Fe content, % ≤
|
0.003 |
0.005 |
0.01 |
|
Un-solute content, % ≤
|
0.02 |
0.03 |
0.05 |
|
Dissociate alkali (Account as Na2CO3)
content, %≤
|
0.10 |
0.40 |
0.60 |
|
Sodium Sulfate(Na2SO4)
content, %≤
|
2.5 |
— |
— |
|
Sodium chloride (NaCl) content ,%≤
|
0.10 |
— |
— |
Use:
In printing and dyeing industry, it is using as
to oxidizer and bleacher for steaming cotton
fabric to prevent fabric cotton fibre local
oxidation to strong fibre intention. In
sensitization industry as developer, in organic
industry as reducer of benzene diamine,
amidoacid. In spin industry as synthetic
fiber, stabilization. And also for paper
making, electronic, water disposal industry.
Package, Store and
delivery:
1.Inner with plastic bag, coat with plastic
intertexture bag. Inner bag is pricked or
heat closed, out bag is sewed. N/G is 25kg
or 50kg.
2.Sodium
Sulphite
is packaged with plastic intertexture bag or
cask with an inner plastic bag. N/G is
25kg or 50kg.
3.Should be loaded in Vehicle with canopy to
prevent affected with damp or solarization.
4.The deposited validity date is in 6 months
from its production date.
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