High Quality Sodium Pyrosulfite Industrial Grade

Model NO.: sodium pyrosulfite 98&min Appearance: Powder CAS No.: 7681-57-4 Mf: Na2s2o5 Origin: Shandong, China Type: Sodium Sulfate Grade Standard: Industrial Grade Einecs No.: 231-673-0 Trademark: QingXin HS Code: 28321000
Property: 

white or light yellow crystal powder, a strong smell of sulfur dioxide,relative density is 1.4, easy to dissolve in water and glycerin, water solution. It has acidity,and its solubility will become large while raising the temperature and is less to dissolve in ethanol.

Molecular Formula : Na2S2O5
 
Molecule Weight : 190.12
 
CAS NO .: 7681-57-4
 
Appearance : White Free Flowing Fine Crystal or Powder
 
Packing: Packed in 25kg plastic woven bag, 25kg Kraft paper bag, 25kg PE bag, 500kg/1000kg/1100kg/1200kg jumbo bag or as per the buyer's requirement.
 
Specification For Food Grade and Industry Grade :
 

Item	Quality Index
	Food Grade	Industry Grade
Purity ( As Na2S2O5)	98.0% min	97.0% min
Sulfur Dioxide( SO2)	65.0% min	65.0% min
Arsenic ( As )	0.0002% max	-
Heavy metals ( As Pb )	0.0005% max	-
Selenium (Se )	0.0005% max	-
Iron (Fe)	0.001% max	0.002% max
Water insoluble	0.02% max	0.05% max
PH value :	4.0-4.8	4.0-4.8
Remark :	Conformed with FCC V and E 223 Standar

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