Top Sale with Good Quality Sodium Pyrosulfite CAS 7681-57-4 Insurance Powder

• Customization: Available
• CAS No.: 7681-57-4
• Formula: Na2s2o5
• Model NO.: Sodium Pyrosulfite
• 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

Top sale with good quality Sodium Pyrosulfite CAS 7681-57-4 insurance powder

Product Description

Sodium metabisulfite (Na2S2O5) is an inorganic compound, which is white or yellow crystal with a strong pungent smell. It is soluble in water and the aqueous solution is acidic. When it comes in contact with strong acid, it releases sulfur dioxide and generates corresponding salts. If left in the air for a long time, it will be oxidized into sodium sulfate, so sodium metabisulfite cannot be stored for a long time.

 

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

Used for the production of insurance powder, sulfamethazine, metamizole, caprolactam, etc.; used for the purification of chloroform, phenylpropyl sulfone and benzaldehyde. Used as an ingredient in fixatives in the photographic industry; used in the production of vanillin in the spice industry; used as a preservative in the brewing industry; used as a rubber coagulant and dechlorinating agent after cotton cloth bleaching; as an organic intermediate; used in printing, dyeing, and tanning; used as a reducing agent ; Used as wastewater treatment in the electroplating industry, oil fields, and mineral processing agents in mines; used as preservatives, bleaching agents, and loosening agents in food processing.Warm reminder.

 

 

Safe dosage: The dosage of sodium metabisulfite needs to be strictly controlled, generally 10-1000mg/kg. Exceeding this range may have harmful effects on the human body.

Protective measures: Protective equipment, such as gloves, masks and goggles, should be worn during operation to avoid direct contact.
Avoid mixing: It should not be mixed with certain foods or chemicals, especially foods rich in vitamin C, to avoid destroying the nutritional content.
Storage conditions: should be stored in a dry, ventilated and cool place, avoid high temperature and humidity, and keep sealed to prevent moisture absorption and caking.
Avoid long-term storage: Because it is easy to deteriorate, long-term storage is not recommended. 

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)