Technical Grade Sodium Metabisulfite Sodium Pyrosulfite CAS 7681-57-4

• CAS No.: 7681-57-4
• Formula: Na2o5s2
• EINECS: 231-673-0
• Environmental Protection: Yes
• Certification: REACH
• Color: White
• Model NO.: shengbang
• Appearance: Powder
• Type: Antioxidant
• Usage: Preservative, Bleach, Loose Agent-
• Quality: Industry Grade
• Sample: Available
• Storage: Cool Dry Place
• Transport Package: 25kg/Bags as Your Request
• Specification: 25KG/Bags
• Trademark: shengbang
• Origin: China
• HS Code: 2832100000
• Production Capacity: 10000kg/Month

Product Description

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.

 

Product Parameters

     

Product Name	SODIUM METABISULPHITE
Analysis item	Standard	Analysis Result
Main content(Na2S2O5)	97%min	97.1%
Fe ( Fe)	0.003%max	0.003%
Water-Insoluble	0.05%max	0.02%
Arseni c(As) content	0.0005%max	<0.0001
(pb) content	0.0005%max	<0.0005

 

Application

Application and Uses :

-Used as a chromatographic analysis reagent, preservative and reducing agent in the dye and pharmaceutical industries.
-Sodium metabisulfite is more reductive than sulfite and acts similarly to sodium metabisulfite
-It is used in the food industry as a bleaching agent, preservative, loosening agent, antioxidant, color protector and freshness preservative.

-It is used in the pharmaceutical industry to produce chlorofor m, phenylpropylsulfone and benzaldehyde. The rubber industry is used as a   coagulant. Printing and dyeing industry used for cotton cloth after bleaching dechlorination agent, cotton cloth cooking additives. The leather   industry is used to treat leather
-Analysis of use. Antiseptic  agent. Reducing agent. antioxidants


 

Packaging & Shipping

25KG/PP Bags, 27MT/20'FCL
25KG/PE Bags, 27MT/20'FCL
In 1.25MT jumbo bags, 25MT/20'FCL
As per Customer Requirements or Standard Export Loading

 

 

 

 

FAQ

 

 

Q : Can I place sample order?

A: Highly Welcome your sample order to test our quality first!

Q: Can | print my logo?
A: Yes, OEM/ODM service is available. Customized logo/package/name/color. For details, Please kindly contact the sales persons.

Q: How do we make the payment?
A: We accept Western Union, TT, Alibaba trade assurance.

Q: What's the delivery time?
A: The delivery time for sample order is normally 4-7 working days after full payment received. For bulk order, it's about 10~20
working days after deposit received.

Q: How would the goods be shipped?
A: For small quantity order , we ship via DHL, UPS, TNT, FedEx express. For bulk order, by air and by sea normally.