Sodium pyrosulfite is white or yellow crystalline powder or small crystal, with a strong smell of SO₂, specific gravity of 1.4, soluble in water, the aqueous solution is acidic, contact with strong acid will release SO₂ and generate the corresponding salt, long placed in the air, it will be oxidized into Na₂S₂O₆, so the product can not be stored for a long time. So above 150 degrees Celsius, we're going to solve for SO₂.

Appearance: white or yellowish crystalline powder or small crystal

Product specification: sulfur dioxide is more than 65%

                                      Iron is 0.005% or less

                                      Water insoluble substance is less than 0.05%

PH: 4.0 to 4.6

25 Kg/pp bag, 25MT per 20FCL. 

According to the customer's requirement.

  It is used for the purification of insurance powder, sulfadimethylpyrimidine analgine, caprolactam, chloroform, phenylsulfone and benzaldehyde. The photographic industry is used as a fixer. The spice industry is used to produce vanillin. Used as an industrial preservative in brewing, rubber coagulant and bleaching dechlorination agent for cotton cloth. Organic intermediates, dyes and leather are used as reducing agents for electroplating, wastewater treatment in oil fields and mineral dressing agents in mines.

  LINQUMINHANG GROUP WORK WIN CO., LTD. is a leading manufacturer and provider of total integrated supply chain solutions. We offer the best chemical products for the orders.

  LINQUMINHANG GROUP WORK WIN CO., LTD. is a leading manufacturer and provider of total integrated supply chain solutions. We offer the best chemical products for the orders.

  We have a multilingual team, and many big branch factories. A regional market presence-including southeast Asia, Indonesia, Russia, Spain, Chile, Brasil, Australia etc.

  Group Work Win strives to build a long term relationships by providing our customers with continuous and reactive support. We aim to supply better quality products and after-sales service.

1.What documents you provide?

Usually, we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.

2.What's your payment terms?

T/T or L/C.

3.How about the validity of the products?

According to the products you ordered.

4.When will i get reply?

We ensure you fast response, fast service .Emails will be replied in 12 hours,your questions will be answered in time.

5.How do you deal with quality control?

We can accept any thired party inspection.