Premium Sodium Pyrosulfite for Effective Water Treatment Solutions

• Customization: Available
• CAS No.: 7681-57-4
• Formula: Na2s2o5
• EINECS: 231-673-0
• Appearance: Powder
• Certification: CCIC, RoHS, ISO
• Purity: 90%~99%
• Type: Sodium Pyrosulfite
• Grade Standard: Food Grade
• Transport Package: Bag
• Specification: 25kg
• Trademark: changcheng
• Origin: China
• Production Capacity: 100000ton/Year

Product Description

China's top-quality Sodium Pyrosulfite (CAS 7681-57-4) for printing, dyeing, and tanning from Guangzhou Zhifan Chemical Co., Ltd.

Product Description

Sodium Metabisulfite

 

Guangzhou Zhifan Chemical Co., Ltd. offers high-quality sodium metabisulfite, an inorganic compound available in white or yellow crystals with a strong pungent smell. This compound is soluble in water, creating an acidic aqueous solution. When exposed to strong acids, it releases sulfur dioxide and forms corresponding salts. However, prolonged exposure to air leads to oxidation into sodium sulfate, making long-term storage unsuitable.

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

 

Application Areas

 

Our product is a versatile chemical compound used in various industries:

• Production of insurance powder, sulfamethazine, metamizole, caprolactam, etc.


• Purification of ***, phenylpropyl sulfone, and benzaldehyde


• Ingredient in fixatives in the photographic industry


• Production of vanillin in the spice industry


• Preservative in the brewing industry


• Rubber coagulant and dechlorinating agent


• Organic intermediate in various processes


• Used in printing, dyeing, and tanning


• Reducing agent in different applications


• Wastewater treatment in electroplating industry, oil fields, and mineral processing


• Preservatives, bleaching agents, and loosening agents in food processing




 
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Choose our product for its wide range of applications and high-quality performance.

 

 

Precautions

 

Product: Sodium Metabisulfite

 

Safe Dosage: The recommended dosage of sodium metabisulfite is 10-1000mg/kg to prevent harmful effects on the human body.

 

Protective Measures: When handling, wear protective equipment such as gloves, masks, and goggles to avoid direct contact.

 

Avoid Mixing: Do not mix with foods or chemicals high in vitamin C to preserve nutritional content.

 

Storage Conditions: Store in a dry, ventilated, and cool place. Keep sealed to prevent moisture absorption and caking. Avoid high temperature and humidity.

 

Avoid Long-Term Storage: Due to potential deterioration, long-term storage is not recommended.

 

 

Company Profile

 

Welcome to Guangzhou Zhifan Chemical Co., Ltd.

 

As industry experts with over 15 years of experience, we specialize in providing the latest chemical product consultation and market changes. Our 5,000 square meters of dedicated chemical warehouses in South China ensure convenient access to international shipping through Guangzhou Nansha Port and Shenzhen Port. With qualifications to handle dangerous goods and quality inspection reports for all our products, you can trust in our commitment to quality.

 

Our Main Products Include:

 

• Sodium Hydroxide


• Sodium Sulfide


• Polyaluminum Chloride


• Polyacrylamide


• Oxalic Acid


• Compound Alkali


• Sodium Hydrosulfide


• Sodium Metabisulfite


• Ferrous Sulfate


• Soda Ash


• Glucose


• Citric Acid


• Industrial Salt


• Defoaming Agent




 
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FAQ

Are you a factory or a trader?
We are a trader, but we have cooperative factories that provide stable supply, especially sodium hydroxide and sodium sulfide. We are the exclusive agent in southern China and have certain advantages in channels and prices. At the same time, if you need other chemical products, we can also Finding a suitable factory for you to cooperate with will not limit you to one factory providing a single product.

How to transport?
For chemical products, we generally transport them by sea by full container. If the quantity you purchase does not meet the full container requirements or special products, we will combine them with other goods or pack the special chemicals separately. The packing method can be confirmed after placing the order.

Are the quality of your products stable?
Because we are a trading company, we cooperate with large-scale factories in China. Before cooperating with them, we will purchase samples and inspect the factories. Only products with stable product quality that comply with national regulations can enter ours. In the product list, we will conduct an additional inspection for the exported goods, and any products that do not meet the standards will be rejected by us.

If I purchase a large quantity, can I get any additional discounts?
Regarding large customers, we have more favorable prices, but based on different chemicals, you need to consult customer service to get the latest quotation.

What's your MOQ?
Our minimum order quantity is 1 ton, which is shipped by LCL with other goods (except for special chemicals)

Do you provide free samples?
We do not provide free samples for the time being, because the production methods and quality testing of chemical standards are the same. I can provide you with the quality testing report of our products and other certifications you need to ensure that our quality is the same as high-quality products on the market.  

Can I customize my own logo or packaging?
Our products are packaged in 25kg, 50kg and barrels, generally in English packaging and branded in Chinese. If you need other packaging methods, you can contact our customer service. Special packaging requires customization fees.