Reliable Sodium Pyrosulfite Supplier for Mining Chemical Needs

• Customization: Available
• CAS No.: 7681-57-4
• Formula: Na2s2o5
• Model NO.: Na2S2O5
• EINECS: 231-673-0
• Appearance: Powder
• Classification: Sn
• Certification: CCIC, ISO
• Purity: 90%~99%
• Type: Sodium Pyrosulfite
• Grade Standard: Industrial Grade
• Water Solubility: Soluble
• Molecular Weight: 190.107
• Density: 1.48g/Cm³
• Sample: Avaliable
• Contact: +0o86 159o3116930
• Transport Package: 25kg/Bag or as Customized
• Specification: 25kg/Bag
• Trademark: YILEFENG
• Origin: China
• Production Capacity: 3000ton/Per Year

Product Description

 

Product Description

Contact Alina: +0O86 159O3116930
                             
                                                     Sodium Pyrosulfite/Sodium Metabisulfite CAS 7681-57-4

Sodium metabisulfite (Na2S2O5) is an inorganic compound. It appears as white or yellow crystals with a strong pungent odor. It is soluble in water, and its aqueous solution is acidic. When it comes into contact with strong acids, it releases sulfurdioxide and forms corresponding salts. If left in the air for a long time, it oxidizes to sodium sulfate. Therefore, sodium metabisulfite cannot be stored for a long time.

Properties and Stability:

1. It decomposes easily when exposed to moisture and oxidizes in the air to form sodium sulfate. It is irritating.

2. It decomposes at 150ºC. It is a white powder with a strong SO2 odor. It loses SO2 in the air and absorbs O2 to transform into Na2SO4. It is soluble in water, and the aqueous solution is acidic. When the solution is heated above 65ºC, it decomposes into Na2SO3 and SO2.

Specifications

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%
(As) content	0.0005%max	<0.0001
(pb) content	0.0005%max	<0.0005
Phosphoric aci d test ≤	4.2
Appearance	White to slightly yellowish crystialline powder

Product Photos

Application

  

1. Bleaching Agent: Used in textile and paper bleaching to enhance whiteness.

 

2. Water Treatment Agent: Effectively remove heavy metal ions from industrial wastewater.

 

3. Reducing Agent: Participate in reduction reactions in chemical synthesis.

 

4.Dechlorination Agent: Remove residual Cl in water treatment, improving tap and pool water quality.

Packaging & Shipping

 
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.
Packaging: 25kg/Bag, or according to your requirement. Stored in cool, dry and draughty storehouse. Kept away form fire, heat source, moisture. Avoid packing damage.  

Company Profile

Hebei Yilefeng Biotechnology Co., LTD. is a Chinese manufacturer specializing in the production of chemicals. Our company is well known for its high-quality products and excellent service. At present, our products are steadily supplied to more than 200 countries and regions including the Middle East, South America, North America, Southeast Asia, Africa, Europe, etc.We welcome all the customers from all over the world to contact us for future business relationships and mutual success.

FAQ

Q1: Are you trading company or manufacturer?
          We are factory.
Q2 : Do you provide samples? is it free or extra?
           Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q3 : Do you accept customization?
           OEM can be acceptable.We can produce according to your indicators.
Q4 : How long is your delivery time?
           Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock. it is according to quantity.
Q5 :  What is your payment terms?
          T/T 30% in advance and balance against copy of B/L.