Taian Health Chemical Co., Ltd.

sodium pyrosulfite 97%

• Category :

  Inorganic chemicals/Inorganic salts

• Synonyms :

  Sodium pyrosulfite;disodium disulphite;Sodium metabisulphite;Sodium disulphite;Sodium pyrosulphite;SODIUM DISULFITE;disodium oxidosulfanesulfonate oxide;Sodium Metabi;Metabisulfite Sodium;Sodium Metabisulfite (Food Grade);

• CAS NO :

  7681-57-4

• EC NO :

  231-673-0

• Molecular Formula :

  Na₂S₂O₅

• Molecular Weight :

  190.1065

• Main Specifications :

  97%

• InChI :

  InChI=1/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2

• Packing :

  Packed in 25kg plastic woven bag, 25kg Kraft paper bag, 25kg PE bag,

• Product description :

  1.sodium pyrosulfite powder   Classification: Sulphate	Type: Sodium Metabisulfite	CAS No.: 7681-57-4
  Other Names: metabisulfite	MF: Na2S2O5	EINECS No.: 231-673-0
  Place of Origin: Shandong China (Mainland)	Grade Standard: Agriculture Grade, Food Grade, ...	Purity: 98%
  Appearance: white	Application: chemical meterial	Brand Name: YY
  Model Number: M-008	crystal: white

  Packaging & Delivery

  Packaging Detail:	Packed in 25kg plastic woven bag, 25kg Kraft paper bag, 25kg PE bag,
  Delivery Detail	Within 10-15days after payment

  Specifications

  1.Both food & tech grade 
  2.Steady high quality 
  3.Nicest price &Good service 
  4.Prompt delivery

  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	96.0% 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 Standard

   

  Specification for Pharmaceutical Grade and Photo Grade  

  Molecular Structure :

  

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  Item	Quality Index
  	Pharmaceutical Grade	Photo Grade
  Purity ( As Na2S2O5)	98.0% min	98.0% min
  Sulfur Dioxide( SO2)	65.0% min	65.0% min
  Thiosulphate ( As S2O3) :	0.05 % max	0.05% max
  Chloride ( As CL-) :	30 ppm max	50ppm max
  Arsenic ( As ) :	1ppm max	1ppm max
  Lead ( Pb ) :	1 ppm max	2ppm max
  Copper (Cu) :	1 ppm max	1ppm max
  Iron (Fe ) :	5 ppm max	5ppm max
  Mercury (Hg) :	0.1ppm max	1ppm max
  Chromium (Cr) :	1 ppm max	-