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Sodium Sulfite Anhydrous

Inquiry
  Post Date: Apr 28,2021
  Expiry Date: Oct 25,2021
  Detailed Description: Cas No. :7757-83-7

Property: white gravel or powder crystal,relative density is 1.561, less to dissolve in water and its water solution has alkaline reaction; it is hard to dissolve in ethanol. It is used to produce chloroform, solasulfone and Benzaldehyde in medical industry.

Molecular Formula : Na2SO3

Molecule Weight : 126.04

CAS NO .: 7757-83-7

Appearance : White Free Flowing Fine Crystal or Powder

Specification for Industry Grade and Food Grade :

Item
Quality Index
Industry Grade
Food Grade
Purity ( As Na2SO3 )
96.0% min
98.0% min
Sodium sulphate ( SO4 )
2.5% max
1.5% max
Chlorides ( As NaCL )
0.5% max
0.1% max
Arsenic ( As )
-
0.0002% max
Heavy metals ( As Pb )
-
0.0005% max
Iron (Fe)
0.005% max
0.002% max
Water insolubles
0.05% max
0.02% max

Specification For Photo Grade and Pharmaceutical Grade

Item
Quality Index
Photo Grade
Pharmaceutical Grade
Purity ( As Na2SO3)
98.0% min
98.0% min
Sodium sulphate (SO4)
1.5% max
1.5% max
Chlorides ( As CL-)
0.05% max
0.05% max
Arsenic ( As )
0.0002% max
2ppm max
Lead ( As Pb )
0.0005% max
2ppm max
Iron (Fe)
0.001% max
5ppm max
Selenium (Se)
0.0001% max
1ppm max
Zinc ( Zn )
0.0001% max
 

  CAS Registry Number:

7757-83-7
  Synonyms: ;Sodium sulfite anhydrous;Sodium sulphite;anhydrous sodium sulfite;Sodium sulfite ,anhydrous;Sodium Sulfite (Food Grade);
  Molecular Formula: Na2SO3
  Molecular Weight: 126.04
  Molecular Structure: 7757-83-7 Sodium sulfite
  Hazard Symbols:  Xn:Harmful;
  Risk Codes: R22:;
R36/37/38:;
  Safety Description: S24/25:;

  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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