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

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 : Item Quality Index Industry Grade Food Grade Purity ( As Na2SO3) 96.0% min 98.0% min Sodium sulphate ( SO4) 2.0% max 1.0% max Chlorides ( As NaCL) 0.5% max 0.1% max Arsenic ( As ) - 0.0002% max Heavy metals ( As Pb ) - 0.0005% max Iron (Fe) 0.005% max 0.002% max Water insolubles 0.05% max 0.02% max  Specification For Photo Grade and Pharmaceutical Grade Item Quality Index Photo Grade Pharmaceutical Grade Purity ( As Na2SO3) 98.0% min 98.0% min Sodium sulphate ( SO4 ) 1.0% max 1.0% max Chlorides ( As CL-) 0.05% max 0.05% max Arsenic ( As ) 0.0002% max 2ppm max Lead ( As Pb) 0.0005% max 2ppm max Iron (Fe) 0.001% max 5ppm max Selenium ( Se) 0.0001% max 1ppm max Zinc ( Zn) 0.0001% max 1ppm max Copper ( Cu ) 0.0001% max 0.1ppm 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