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Sodium Pyrosulfite

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  Post Date: Sep 29,2019
  Expiry Date: Mar 27,2020
  Detailed Description: Cas No. :7681-57-4

CAS No.: 7681-57-4

Application:
Industrial Uses
1. Water Treatment
2. Bleaching Agent

Food Preservative
1. Antimicrobial

Other Uses
1. Medicinal
2. Photographic and film industry
3. Landscape Gardening
4. Fiber Industry
5. Gold mining

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

  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: Zibo Aojin Chemical Co., Ltd.     [ China ]        
  Contact: Ms.Zhang (General Manager)
  Tel: +86-533-2188606
  Fax: +86-533-2188606
  Email: aojinchem@foxmail.com
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