molecular formula : Na2.SO3
·M.W :126.04
·Basic Characteristics : Colorless, single-crystal or powder ramps, soluble in water, do not dissolve in alcohol, etc.
·Quality Standards :
A :Sodium sulfite (single-crystal )
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·M.W :126.04
·Basic Characteristics : Colorless, single-crystal or powder ramps, soluble in water, do not dissolve in alcohol, etc.
·Quality Standards :
A :Sodium sulfite (single-crystal )
|
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High-class products
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First-class products
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Conforming products
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Purity(Na2.SO3 ), %, ≥
|
99.0
|
98.5
|
98.0
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Water, %, ≤
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1.4
|
2.0
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2.5
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Purity (Nacl ) ,%, ≤
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0.10
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0.17
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--
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Water insoluble,%, ≤
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0.05
|
0.06
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0.10
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Purity (sodium nitrate ),%, ≤
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0.80
|
1.00
|
1.90
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?B:sodium sulfite (powder )
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Name of indicators |
indicators
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||
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High-class products
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First-class products
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Conforming products
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|
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Na2.SO3, %,≥
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97.0
|
96.0
|
93.0
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Fe ,%, ≤
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0.003
|
0.005
|
0.01
|
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Water insoluble,%, ≤
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0.02
|
0.03
|
0.05
|
|
Na2CO3, %, ≤
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0.10
|
0.40
|
0.60
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Na2SO4, %,≤
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2.5
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--
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--
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NaCl, %,≤
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0.10
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--
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--
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·uses: For sulfite-cellulose acetate, sodium thiosulfate, organic medicines, such as bleach fabric, but also used as a
reducing agent, preservatives, etc. to chlorine.
·Storage: Dry and hermetic
reducing agent, preservatives, etc. to chlorine.
·Storage: Dry and hermetic
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