Top-Quality Sodium Pyrosulfite for Water Treatment

• 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

Discover top-quality Sodium Pyrosulfite CAS 7681-57-4 for printing, dyeing, and tanning from Guangzhou Zhifan Chemical Co., Ltd. Perfect for water treatment needs.

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, producing 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 impractical.

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

Product Description:

 

Guangzhou Zhifan Chemical Co., Ltd. offers a versatile and high-quality product that is widely used across various industries. Our product is essential for the production of insurance powder, sulfamethazine, metamizole, caprolactam, and more. It is also utilized in the purification of ***, phenylpropyl sulfone, and benzaldehyde.

 

In the photographic industry, our product serves as a key ingredient in fixatives. In the spice industry, it is crucial for vanillin production, while in the brewing industry, it acts as a preservative. Additionally, it is used as a rubber coagulant, dechlorinating agent, organic intermediate, and reducing agent.

 

Moreover, our product finds applications in printing, dyeing, tanning, wastewater treatment in the electroplating industry, oil fields, mineral processing agents in mines, as well as preservatives, bleaching agents, and loosening agents in food processing.

 

Choose Guangzhou Zhifan Chemical Co., Ltd.'s product for reliable and efficient performance across a wide range of industrial applications.

 

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: Wear protective equipment like gloves, masks, and goggles during operation to avoid direct contact.

 

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

 

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

 

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

 

Company Profile

 

Welcome to Guangzhou Zhifan Chemical Co., Ltd.

 

Our company, with over 15 years of experience in the chemical industry, offers the latest product consultation and market insights. We have 5,000 square meters of chemical warehouses strategically located near Guangzhou Nansha Port and Shenzhen Port for convenient international shipping. With qualifications to handle dangerous goods, our products undergo rigorous quality inspections, providing you with confidence in your purchase.

 

Main Products:

 

• 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


 

 

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.