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Sodium Sulfite Anhydrous

ITEM CAS NO. UN NO./H.S CODE PURITY Hazard Class Molecular Formula:   WEIGHT QUANTITY/20' FCL
Sodium Sulfite Anhydrous 7757-83-7  283210 90/93/97% NO Na2SO3 25KG Bag 26MT

 

Product Name: Sodium sulfite anhydrous
CAS NO: 7577-83-7
Molecular Formula: Na2SO3
Specifications
Item Grade
Best quality First quality Qualifier
Sodium sulfite (Na2SO3) Assay, % ≥ 97.0 ≥ 96.0 ≥ 93.0
Fe, % ≤ 0.003 ≤ 0.005 ≤ 0.02
Insol. in water, % ≤ 0.02 ≤ 0.03 ≤ 0.05
Free alkali (Na2SO3) Assay, % ≤ 0.10 ≤ 0.40 ≤ 0.80
Sulphate (Na2SO4) Assay, % ≤ 2.5
Chlorides (NaCl) Assay, % ≤ 0.10  
Packing: 25kg plastic woven bag, 50kg/500kg/1000kg flexible freight bag, or upon clients' demand.
Specifications: white crystal or powder; pH of aqueous solution: 9-9.5, At 33.4oC,it solubility is 28%. Density: 2.633(15.4oC), refracitive index: 1.565; Molecular weight126.04.
H.S code: 283210
Use: Used as deoxidant and bleaching agent for printing & dyeing industry; also used for paper making, electronic and water treatment industries.

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