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Sodium Metabisulfite

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  Post Date: Apr 28,2021
  Expiry Date: Oct 25,2021
  Detailed Description: Cas No. :7681-57-4

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
Food Grade
Industry Grade
Purity(As Na2S2O5)
≥98.0%
≥97.0%
≥96.0%
Sulfur Dioxide(SO2)
≥65.0%
≥65.0%
≥65.0%
Arsenic(As)
≤0.0002%
--
≤0.0001%
Heavy Metals(As Pb)
≤0.0005%
--
--
Selenium(Se)
≤0.0005%
--
--
Iron(Fe)
≤0.002%
≤0.005%
≤0.005%
Water Insoluble
≤0.02%
≤0.05%
≤0.05%
PH Value
4.0-4.8
4.0-4.8
4.0-4.8
Remark
Conformed with FCCV and E223 Standard

Specification for Pharmaceutical Grade and Photo Grade

Item
Pharmaceutical Grade
Photo Grade
PURITY(AS Na2S2O5)
≥96.0%
≥96.5%
SULFUR DIOXIDE(SO2)
≥65.0%
≥65.0%
CHLORIDE(As NaCL)
≤0.003%
≤0.005%
ARSENIC(As)
≤0.0001%
≤0.0001%
HEAVY METALS(As Pb)
≤0.0005%
≤0.0008%
SELENIUM(Se)
≤0.0001%
≤0.0005%
IRON(Fe)
≤0.001%
≤0.001%
Copper(Cu)
≤0.0001%
≤0.0001%
Nickel(Ni)
≤0.0001%
--
WATER INSOLUBLE
≤0.01%
≤0.01%
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: Shandong Swift China International Co., Ltd.     [ China ]        
  Contact: Charles Li
  Tel: 0536-5191398
  Fax: 0536-5191398
  Email: sales@xunhuachem.com
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