
Chemical Name: Sodium Bisulfite
Molecular Formula: NaHSO3
Molecular Weight: 104.06
CAS No. : 7631-90-5
Standard Executed: HG/T 3814-2006  GB 25590-2010
Appearance
White crystalline powder with sulfur dioxide odor.
Application
• For bleaching of cotton fabrics and organic materials.
• Used as a reducing agent in dyestuffs, papermaking, tanning, chemical synthesis and other industries.
•Raw material used in the pharmaceutical industry as an intermediate in the production of anandamide and aminopyrine.
• Used in the treatment of chromium-containing wastewater and as an electroplating additive.
• Water treatment reverse osmosis membrane protection fluid;
• Used as a bleaching agent, preservative and antioxidant in the food industry.
Packing
• Net weight : 25,1000,1250kg;
• PP woven bag, paper-plastic composite bag, kraft paper bag, with inner PE bags.
Specification
| 
			 Item  | 
			
			 Standard  | 
		|
| 
			 Industrial grade  | 
			
			 Food grade  | 
		|
| 
			 Content (as SO2)ω/%  | 
			
			 64.0-67.0  | 
			
			 58.5-67.4  | 
		
| 
			 Water insoluble matter ω/% ≤  | 
			
			 0.03  | 
			
			 0.01  | 
		
| 
			 Chloride (as Cl) ω/% ≤  | 
			
			 0.05  | 
			
			 ---  | 
		
| 
			 Iron (Fe) ω/% ≤  | 
			
			 0.004  | 
			
			 0.005  | 
		
| 
			 Arsenic (As) ω/% ≤  | 
			
			 0.0002  | 
			
			 0.0002  | 
		
| 
			 Heavy metals (as Pb)ω/% ≤  | 
			
			 0.001  | 
			
			 0.0005  | 
		
| 
			 PH (50g/L solution)  | 
			
			 4.0-5.0  | 
			
			 ---  | 
		
| 
			 Heavy metal (Pb)ω/% ≤  | 
			
			 ---  | 
			
			 0.0002  | 
		
| 
			 Selenium (Se) ω/% ≤  | 
			
			 ---  | 
			
			 0.0005  |