Sodium Metabisulfite for Mining Industry for Export

• Customization: Available
• CAS No.: 7681-57-4
• Formula: Na2s2o5
• Model NO.: tech grade
• EINECS: 231-673-0
• Certification: RoHS, ISO, Kosher Halal
• Purity: 90%~99%
• Type: Sodium Sulfate
• Appearance: Powder
• Grade Standard: Industrial Grade
• Molecular Weight: 190.09
• Content: 96%Min
• Usage: Printing, Dyeing, Mordant, Leather
• Stability: Stable
• Water Solubility: Easy
• Odor: Sulfur Dioxide Smell
• Certificate: ISO, Halal, Kosher
• Other Name: Sodium Pyrosulfite
• Shelf Life: 2 Years
• Hazardous: No
• Storage: Cool and Dry Place
• Loading Qty: 27mt
• Application: Mining, Food, Textile, Oilfield
• Delievery: 2 Weeks
• Customize: Yes
• Transport Package: PP Bag
• Specification: 25kg/Jumbo bag
• Trademark: fondland
• Origin: China
• HS Code: 2832100000
• Production Capacity: 50000mts/Year

Product Description

 

Product Description

Sodium metabisulfite (Na2S2O5), is an inorganic compound, is white or yellow crystal, with a strong pungent odor, soluble in water, aqueous solution is acidic, and strong acid contact is released sulfur dioxide and the corresponding salts generated for a long time in the air, then oxidation into sodium sulfate, sodium metabisulfite can not be long time to store.
Chemical formula :Na2S2O5
Molecular weight :190.09
CAS No. :7681-57-4
EINECS No. :231-673-0
Appearance: white crystalline powder, smell of sulfur dioxide
solubility: soluble in water, aqueous solution is acidic soluble in glycerin, slightly soluble in ethanol

 

Detailed Photos

Item	Quality Index
	Food Grade	Industry Grade
Purity ( As Na2S2O5)	98.0% min	97.0% min
Sulfur Dioxide( SO2)	65.0% min	65.0% min
( As )	0.0002% max	-
Heavy metals ( As Pb )	0.0005% max	-
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

Packaging & Shipping

25kg pp/paper bag with PE liner;

1000kg jumbo bag;

 customized as per request

 

usage

1. Water Treatment

• Dechlorination:

  • Neutralizes residual chlorine in wastewater Used in municipal/industrial water systems and swimming pools

• Oxygen Scavenger:

  • Prevents corrosion in boiler feedwater by removing dissolved oxygen

2. Pulp & Paper Industry

• Bleaching Agent:

  • Brightens mechanical pulp (often combined with H2O2)

  • Reduces yellowing in recycled paper

• Delignification:

  • Helps break down lignin during chemical pulping

3. Textile Processing

• Desizing Agent:

  • Removes starch-based sizing from cotton fabrics

• Bleach Neutralizer:

  • Stops chlorine bleach action after fabric whitening

• Dye Fixative:

  • Improves color fastness for certain dye classes

4. Mining & Metallurgy

• Gold Extraction:

  • Alternative to cyanide in some leaching processes

  • Reduces environmental impact

• Mineral Processing:

  • Controls slurry viscosity in flotation systems

5. Chemical Manufacturing

• Reducing Agent:

  • Production of sulfur dyes

  • Synthesis of pharmaceuticals

• Sulfur Dioxide Source:

  • Controlled release of SO2 for chemical reactions

6. Petroleum Industry

• Drilling Fluid Additive:

  • Oxygen scavenger to prevent pipe corrosion

  • Stabilizes clay components in mud systems

7. Food Processing (Industrial Scale)

• Equipment Sanitization:

  • Sterilizes food processing lines (0.1-0.5% solutions)

• Bulk Ingredient Preservation:

  • Prevents microbial growth in stored raw materials

8. Photography

• Developer Component:

  • Preserves developing solutions from oxidation

• Fixer Stabilizer:

  • Extends lifespan of photographic fixing baths

9. Rubber Industry

• Vulcanization Accelerator:

  • Modifies cure rates in some rubber compounds

• Latex Preservation:

  • Prevents coagulation in natural rubber latex

10. Leather Tanning

• Deliming Agent:

  • Removes lime from hides after hair removal

• Pickling Aid:

  • Adjusts pH during chrome tanning processes

Company Profile

Shandong Chuanghe Supply Chain Management Co., Ltd., established in 2022, is a professional supplier specializing in food additives, water treatment chemicals, and daily chemical raw materials. We are dedicated to providing high-quality products and customized solutions to international buyers. With over a decade of industry experience, we have built a robust product supply chain network, offering comprehensive one-stop services. Our products are exported to regions including Europe, America, Southeast Asia, the Middle East, and Africa, earning the trust of our customers.  
Main Products: Sodium Erythorbate, Sodium Tripolyphosphate, SLES, Sodium Metabisulfite, Polyaluminum Chloride, Polyacrylamide, Aluminum Sulfate, TCCA, Propylene Glycol, and other food additives, water treatment chemicals, and daily chemical raw materials.  
- Food Additives: Functional ingredients such as preservatives and emulsifiers.  
- Water Treatment Chemicals: Flocculants, disinfectants, and more, meeting industrial and civil needs.  
- Daily Chemical Raw Materials: Surfactants, thickeners, and other ingredients widely used in cleaning and personal care products.  
Our international trade team consists of experienced professionals who are well-versed in global trade processes, regulations, and market trends. They provide end-to-end services, from inquiry and logistics to after-sales support, ensuring a seamless and efficient cooperation experience.  
Shandong Chuanghe Supply Chain Management Co., Ltd. is committed to delivering exceptional products and services, helping global clients achieve their goals and fostering sustainable development.  

FAQ

After Sales Service

A. PreSale Support  
 Product Consultation - Assist buyers in selecting suitable products (e.g., specifications, certifications).  
 Samples & Testing Support - Provide samples and technical data upon request.  
 Customization Guidance - Help with OEM/ODM requirements (packaging, labeling, etc.).  

 B. PostSale Support  
 (1) Order Fulfillment & Logistics Tracking  
 Realtime shipment updates (tracking numbers, estimated delivery time).  
 Coordination with freight forwarders for smooth customs clearance.  

FAQ

 

1. Q: Are you manufacturer or trading company?

    A: We are trading company but we have shares in several cooperated factories.
 2. Q: What would you do to guarantee the product quality?
    A: We have professional quality control team with strict quality control system and rigorous QHSE.
         We give supervision on container loading and delivery to ensure the clearness and neatness of package. 
3. Q: What about your price?
    A: We always supply the products with appropriate price,because we believe this is an effective way to build
        long -  term business with our  customers and earn good reputation.
4. Q: What payment terms do you accept?
    A: For new customers, we accept 30% T/T in advance,70% balance against copy of shipping docs,L/C at sight;
         For old customers, the payment terms can be negotiated accordingly.
5. Q: What about the order lead time?
    A: Usually the order lead time is 10-15days after receiving your prepayment.