Sodium Sulfite Anhydrous 7757-83-7, China Sodium Sulfite Anhydrous 7757-83-7 Manufacturers, China Sodium Sulfite Anhydrous 7757-83-7 Suppliers

Sodium Sulfite Anhydrous

Category :

Inorganic chemicals

EC NO : 231-821-4

Molecular Formula : Na₂SO₃

Main Specifications : 97%min, 98%min

Synonyms : Sodium sulfite anhydrous;Sodium sulphite;anhydrous sodium sulfite;Sodium sulfite ,anhydrous;Sodium Sulfite (Food Grade);

Package: 25kg pp woven bag

Uses : (1) Industry Grade : Used in Dyeing and printing Industry ,as dechlorinating agent and bleaching agent, in leather and tanning industry as bleaching agent , developer agent , reductant agent , stabilizer agent , or used in papermaking, electronic and wate

Molecular Structure:

Product description:

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
Item	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
Item	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	1ppm max
Copper ( Cu )	0.0001% max	0.1ppm max
Mercury ( Hg)	0.0001% max	0.1 ppm max

Application :

(1) Industry Grade : Used in Dyeing and printing Industry ,as dechlorinating agent and bleaching agent, in leather and tanning industry as bleaching agent , developer agent , reductant agent , stabilizer agent , or used in papermaking, electronic and water treatment industry.

(2) Food Grade: In food industry as additive (E223) preservative, antioxidant and antimicrobic for fruits (dried, glazed and candled), vegetables (onions, potatoes, etc.), juices (citrus and grapes) and fish (shrimps and prawns). In silage treatment as antifermentative. In starch and sweeteners production as bacteriostatic.

(3) Photo Grade: In the photographic industry as component of developer bath .

(4) Pharmaceutical Grade : pharmaceutical industry for the production of chloroform, benzene and formaldehydephenylpropanoid Sulfone

Packing: Packed in 25kg plastic woven bag, Kraft paper bag, PE bag, 500kg/1000kg/1100kg/1200kg jumbo bag or as per the buyer’s requirement

Storage: Store the product in a dry and cool place.

Send your inquiry to Sodium Sulfite Anhydrous supplier

Company：	Shouguang Boyu Chemical Co., Ltd.
Contact：	Ms. Dora , Ms.Christy
Phone：	0086-536-8256719, 2103070
Mobile phone：	0086-13806499031, 15053681231
Fax：	0086-536-8256716
E-mail：	Contact Supplier
Website：	http://www.boyuchem.cn
Address：	Room 1101&1103,Building D,Zhongtu Mansion,No.6565 East Fushou Street,Weifang City,Shandong,China.
Zip Code：	261000