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Sodium Disulfite CAS 7681-57-4

Molecular Formula: H2O5S2.2Na

Formula Weight: 192.12

ZSpharmac: Sodium Disulfite Supplier

Product Name: Sodium Disulfite
CAS No: 7681-57-4
Purity: 99%

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Basic Info

Product Name:Sodium Disulfite
Other Names:Sodium Metabisulfite
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:White to Slightly Yellow Powder/Solid
EINECS No.:231-673-0
Storage:Store at +5°C to +30°C.
Provide:Sodium Disulfite MSDS;
Sodium Disulfite COA

What is Sodium Disulfite?

Sodium metabisulfite is white or yellow crystalline powder or little crystals with a strong SO2 smell. The aqueous remedy is acidic. When touching solid acid, SO2 will be launched to develop matching salts. It will be oxidized to Na2S2O6 when positioned in the air for a very long time, so this item can not be utilized. long-lived.

Sodium Disulfite Property

Melting point >300 °C (lit.)
density 1.48
storage temp. Store at +5°C to +30°C.
solubility 540 g/L (20°C)
form Powder/Solid
Specific Gravity1.48
color White to slightly yellow
PH3.5-5 (50g/l, H2O, 20℃)
PH Range4.5 at 50 g/l at 20 °C
Water Solubility 540 g/L (20 ºC)


Sodium Disulfite Uses

  1. Sodium Disulfite is used as preservative, whitening representative and also loosening up agent in food handling. Industrially, salt pyrosulfite is made use of in printing and also dyeing, natural synthesis, printing, sun tanning, pharmaceutical and also other departments; salt pyrosulfite is used in the chemical and also pharmaceutical industries to produce hydrosulfite, sulfamethazine, caprolactam, and so on, as well as chloroform as well as phenylpropyl sulfone and purification of benzaldehyde. The photographic sector is utilized as a component in the fixer. The scent sector is utilized to produce vanillin. It is made use of as chemical in brewing industry, rubber coagulant as well as dechlorination agent after bleaching cotton cloth. Organic intermediates, dyes, as well as tanning are made use of as lowering representatives for electroplating, wastewater treatment in oil fields, and also mineral processing agents for mines.
  2. Sodium Disulfite is a great deal a lot more highly reducing than bisulfite, and also its result resembles that of salt sulfite. my country defines that it can be made use of in sweet fruit, biscuits, sugar, rock sugar, maltose, sweet, sugar, liquid sugar, bamboo shoots, mushrooms and also tinned mushrooms, with a maximum use 0.45 g/kg.

Production Process of Sodium Disulfite

The role of Sodium Disulfite in the Treatment of Chromium-Containing Wastewater

1. Sedimentation tank pretreatment
By means of natural sedimentation or centrifugal sedimentation, the metal dross in the electroplating wastewater is precipitated to facilitate the next step of treatment.

2. Comprehensive wastewater reaction pool
Precipitate the main chromium element in the wastewater by adding medicine (such as adding heavy metal scavenger).

3. Inclined plate settling plate settlement
Most of the metal ions exist in the solution in flocculent form. Therefore, the solution needs to be settled through the inclined plate settling plate.

4. Filtration treatment in the filter tank
After the inclined plate sedimentation treatment, there is still a small amount of flocculent precipitate mixed in the solution. At this point, the solution needs to be sent to a valveless filter for filtration.

About Products:
If you need Sodium Disulfite as a cosmetic raw material, please contact our service staff directly, and we will provide you with high-quality products at the best price.
As an experienced Sodium Disulfite manufacturer and supplier, ZSpharmac will provide Sodium Disulfite raw materials to customers all over the world for a long time.
Over the years, the company has been adhering to the spirit of “integrity management, strict quality control, customer first”, and has won unanimous praise from domestic and foreign customers

Company Profile and Corporate Culture

Company Profile:

ZhiShang Chemical is owned by ZhiShang Group is a professional new-type chemicals enterprise combined into research and development, production and sales .

The company’s competitive product is pharmaceutical raw materials and intermediates (especially carbohydrate derivatives Series), In recent years, the company has made a major breakthrough in food and feed additives, plant extraction, industrial chemicals industry .

The company insists on the spirit of “sincere management, strict quality control, customer as god” , get consistent high praise from customers at home and abroad.

Corporate Culture:

Help China Chemicals to benefit the happiness of human life
Become the most trusted chemical supplier in the world
Striver – oriented, enrich employees, customer first, deep service, seek development
Be prepared for danger in times of peace, forge ahead actively, unity and cooperation, and be brave to fight

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Cosmetic raw materials
  • Products/Service:Cosmetic raw materials (flavors and fragrances,antioxidant products, moisturizing and hydrating, whitening agents, cosmetic additives)
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*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.


After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.



You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

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