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Na2SO3
Na2S2O4 Na2SO3

 

 


Industrial anhydrous sulphurous acid natrium

Chemical name: sulphurous acid natrium
Molecular formula: Na2SO3
CAS number: HG/T 2967-2000
CAS number: 7757-83-7
Appearance:
White or slight gray crystal powder
Applications:  pulp bleaching agent; stabilizer of chemical fiber; fabric drift agent ; dyeing & drifting industry deoxidization agent ; chemical industry reducing agent and sulphonate agent ; leather-making tannin agent ; mineral depressant; water treatment agent.
Shelf Life (Storage time): 6 months
Important information for transportation and storage:
prevent sunshine and moisture in transportation; store in cool places and dry storeroom, avoid to be transported together with strong acid and oxidant or poisonous substance. The product possesses the deliquescence, unsuitably of specified duration storage.
Packing: adopt plastic weaving bags inner line polythene plastic film bag, net weight 50kg 25kg.
Technical specifications:
Specifications
Guidelines
Classification
High-quality product
First-rate product
Second-rate product
Third-rate product
Appearance
White crystal powder
White or slight gray powder
White or slight gray powder
White or slight gray powder
Content(Na2SO3 min)
96.0%
93.0%
90.0%
85.0%
Water content:max
1.0%
2.0%
4.0%
4.0%
Dissociated alkali (Na2SO3 max)
0.8%
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Last modified: June 13, 2004