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sodium sulfite anhydrous water treatment CAS No. 7757-83-7 Na2SO3
sodium sulfite anhydrous water treatment CAS No. 7757-83-7 Na2SO3
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[China Supplier]
Contact Person : Mr. Lu Dean
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Product Detail
1.High purity 97% 98% 2.Prompt shipment and competitive price 3.Both tech and food grade 4.Directly manufacturer

Quick Details

Classification: Other Inorganic Salts

CAS No.: 7757-83-7

Place of Origin: China (Mainland)

Grade Standard: Industrial Grade

Purity: 97%

Sodium Sulfite Anhydrous   

Property: white gravel or powder crystal,relative density is 1.561, less to dissolve in water and its water solution has alkaline reaction; it is hard to dissolve in ethanol. It is used to produce chloroform,solasulfone and Benzaldehyde in medical industry.Molecular Formula : Na2SO3Molecule Weight : 126.04 CAS NO .: 7757-83-7Appearance : White Free Flowing Fine Crystal or Powder  Specification for Industry Grade and Food Grade :
ItemQuality Index
Industry GradeFood Grade
Purity ( As Na2SO3)96.0% min98.0% min
Sodium sulphate ( SO4)2.0% max1.0% max
Chlorides ( As NaCL)0.5% max0.1% max
Arsenic ( As )-0.0002% max
Heavy metals ( As Pb )-0.0005% max
Iron (Fe)0.005% max0.002% max
Water insolubles0.05% max0.02% max
 Specification For Photo Grade and Pharmaceutical Grade
ItemQuality Index
Photo GradePharmaceutical Grade
Purity ( As Na2SO3)98.0% min98.0% min
Sodium sulphate ( SO4 )1.0% max1.0% max
Chlorides ( As CL-)0.05% max0.05% max
Arsenic ( As )0.0002% max2ppm max
Lead ( As Pb)0.0005% max2ppm max
Iron (Fe)0.001% max5ppm max
Selenium ( Se)0.0001% max1ppm max
Zinc ( Zn)0.0001% max1ppm max
Copper ( Cu )0.0001% max0.1ppm max
Mercury ( Hg)0.0001% max  0.1 ppm max
             Application  : (1) Industry Grade : Used in Dyeing and printing Industry ,as dechlorinating agent and bleaching agent,  in leather and tanning industry as bleaching agent , developer agent , reductant agent , stabilizer agent , or used in papermaking, electronic and water treatment industry.  (2) Food Grade: In food industry as additive (E223) preservative, antioxidant and antimicrobic for fruits (dried, glazed and candled), vegetables (onions, potatoes, etc.), juices (citrus and grapes) and fish (shrimps and prawns). In  silage treatment as antifermentative. In  starch and sweeteners production as bacteriostatic.     (3) Photo Grade: In the photographic industry as component of developer bath  .(4) Pharmaceutical Grade : pharmaceutical industry for the production of chloroform, benzene and formaldehyde phenylpropanoid Sulfone Packing: Packed in 25kg plastic woven bag, Kraft paper bag, PE bag, 500kg/1000kg/1100kg/1200kg jumbo bag or as per the buyer’s requirement Storage: Store the product in a dry and cool place.

                                                                     Sodium Sulfite Anhydrous

sodium sulfite anhydrous water treatment CAS No. 7757-83-7 Na2SO3

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