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sodium metabisulfite

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  Post Date: Jul 05,2013
  Expiry Date: Jan 01,2014
  Detailed Description: Cas No. :7681-57-4

Molecular Formula: Na2S2O5
Molecular Weight: 190.10 CAS NO:7681-57-4
Appearance: white or light yellow crystalline powder
Character: with smell of SO2,soluble in water,the solution is acidic.
Usages: Fiber, photo ,pharmacy,chemical ,petroleum chemical and so on.
Packing: 25kg PE bag or 1000kg/bag Product specifications:

Items
Index
standard
Reference value
Na2S2O5 ≥%
97.5
98.6
Fe ≤ %
0.003
0.0026
Insoluble in water ≤ %
0.01
0.008
Cl ≤ %
0.003
0.0025
Pb≤ %
0.001
0.0007
As ≤ %
0.0001
0.00008
PH
3.2-4.6
4.1

  CAS Registry Number:

7681-57-4
  Synonyms: ;Sodium pyrosulfite;disodium disulphite;Sodium metabisulphite;Sodium disulphite;Sodium pyrosulphite;SODIUM DISULFITE;disodium oxidosulfanesulfonate oxide;Sodium Metabi;Metabisulfite Sodium;Sodium Metabisulfite (Food Grade);
  Molecular Formula: Na2S2O5
  Molecular Weight: 190.1065
  Molecular Structure: 7681-57-4 Sodium metabisulfite
  Hazard Symbols:  Xn:Harmful;
  Risk Codes: R22:;
R31:;
R41:;
  Safety Description: S26:;
S39:;
S46:;

  Company: Dongying Fengyuan Chemical Co.,Ltd.     [ China ]        
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