Sodium Metabisulfite Industry Grade/Food Grade/Feed Grade CAS No.: 7681-57-4 Na2s2o5

• CAS No.: 7681-57-4
• Formula: Na2s2o5
• EINECS: 231-673-0
• Composition: Sodium Metabisulfite
• Type: Beverage Preservatives
• Effect: Bacteriostatic Agent
• Resource: Organic Chemical Preservatives
• Appearance: White Granular/ Powder
• Application: Bakery
• Transport Package: PP-PE Bag
• Specification: 25kg
• Trademark: EASTAR
• Origin: China
• HS Code: 28321000
• Production Capacity: 5000mt/Year

Product Description

Sodium metabisulfite is a white or yellow crystalline powder or small crystal with a strong SO2 odor, a specific gravity of 1.4, soluble in water, and the aqueous solution is acidic. When it is in contact with a strong acid, it releases SO2 to form a corresponding salt. When it is left in the air, it oxidizes. It is Na2S2O6, so the product cannot be stored for a long time. Above 150 degrees Celsius, SO2 is decomposed.
Other name:Sodium pyrosulfite
Quality standard:FCCV/E223/USP
CAS NO.:7681-57-4
HS CODE:28321000
M.F.:Na2S2O5
Specification:Industry grade/Food grade
Appearance:White crystalline powder
 

Specification

Item	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
Remark :	Conformed with FCCV and E223 Standard

 

Usage: 
1). the main function is as an oxidant.   
2). In industry, it is mainly used for printing and dyeing, organic synthesis, printing, tanning, pharmaceuticals, etc. 
3). In food processing it is mainly used as a preservative, bleach, and loosening agent. 
4). In the brewing industry it is commonly used as a preservative; 
5). In the textile industry it is as a dechlorination agent for cotton fabric after bleaching.

 

Henan Eastar Chem. & Tech. Co., Ltd. is a professional and comprehensive distributor of chemical products,such as Sodium Thiosulphate, Glycerol Monostearate, Sodium Diacetate, etc. Having been engaged in the international business for 20 years, we are fully experienced and have a perfect quality control system. With decades' of devotion to our work, our professional service has won a good reputation among our cooperating partners at home and abroad.
 

• 1) Can we print our logo on the product ?
  Of course, we can do it. Just send us your logo design.
• 2) Do you accept small orders ?
  Yes. If you are a small retailer or starting up business,We are definitely willing to grow up with you. And we are
  looking forward to co-work with you for a long term relationship.
• 3) How about the price? Can you make it cheaper ?
  We always take the customer's benefit as the top priority. Price is negotiable under different conditions, we are
  assuring you to get the most competitive price.
• 4) Do you offer free samples ?
  A 5Stars Review = A Free Sample
  It's appreciated that you could write us positive reviews if you like our products and service, we will offer you some
  free samples on your next order.
• 5) Are you able to deliver on time?
  Of course!we specialised in this line for many years,many customer make a deal with me because we can deliver
  the goods on time and keep the goods top quality!
• 6) What are your payment terms ? Any third party payment ?
  We usually accept T/T, Western Union, L/C.
• 7) Can I visit your company and factory in China?
  Sure. You are very welcomed to visit our company 
• 8) How Can I place an order ?
  You could just send us inquiry to any of our sales representatives to get detailed order information, and we will
  explain the detail process.