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98% Purity Sodium Pyrosulfite Tech Grade Antichlor For Cotton Bleaching

98% Purity Sodium Pyrosulfite Tech Grade Antichlor For Cotton Bleaching

  • 98% Purity Sodium Pyrosulfite Tech Grade Antichlor For Cotton Bleaching
98% Purity Sodium Pyrosulfite Tech Grade Antichlor For Cotton Bleaching
Product Details:
Place of Origin: Hunan
Brand Name: OEM
Certification: SGS,ISO 9001
Model Number: sodium pyrosulfite
Payment & Shipping Terms:
Minimum Order Quantity: 1 metric ton
Price: usd 300 per metric ton
Packaging Details: 25 kgs bag,1000 kgs big bag
Delivery Time: 5-8 days
Payment Terms: T/T , L/C
Supply Ability: 3000 tons per month
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Detailed Product Description
Name: Antichlor In Cotton Bleaching Sodium Pyrosulfite Other Name: Antichlor In Cotton Bleaching Sodium Metabisulfite
Shelf Life: 365 Days Grade: Tech Grade First Grade
Usage: Chemical For Antichlor In Cotton Bleaching Packing: 25 Kgs Plastic Woven Bag/1000 Kgs Jumbo Bag
High Light:

sodium meta bi sulphate


smbs sodium metabisulfite

Sodium metabisulfite/Sodium Pyrosulfite tech grade


Trait Service:


-Prompt reply & instant communication available

-Customerized packing bag

-Shared fright for sample delivery

-Photoes all-the-way for cargo tracing after order confirmation




make sodium metabisulfite
3.Heavy metal(pb)%:0.002%
4.good quality and reasonable price


Name:make sodium metabisulfite
Molecular Weight:190.1065
Melting Point():150
Water Solubility:540 g/L (20)
Risk Codes:R22;R31;R41
Safety Description:S26;S39;S46
Odor:odor of sulfur dioxide
Specific Gravity:1.4 (Water = 1 )
Keywords:sodium metabisulfite

CAS NO.7681-57-4 Sodium Metabisulfite


Food additive

It is used as a preservative and antioxidant in food and is also known as E223.[4]
It may cause allergic reactions in those who are sensitive to sulfites, including respiratory reactions in asthmatics, anaphylaxis and other allergic reactions in sensitive individuals.[5][6]
Sodium metabisulfite and potassium metabisulfite are the primary ingredients in Campden tablets, used for wine and beer making.[7]
The acceptable daily intake is up to 0.7 milligrams per kilogram of body weight.[8] Sodium metabisulfite oxidizes in the liver to sulfate which is excreted in the urine.[8]
Sodium metabisulfite or sodium pyrosulfite (IUPAC spelling; Br. E. sodium metabisulphite or sodium pyrosulphite) is an inorganic compound of chemical formula Na2S2O5. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant and preservativeagent.

Chemical structure



The anion metabisulfite is a hybrid of dithionite (S2O42−) and dithionate (S2O62−). The anion consists of an SO2 group linked to an SO3 group, with the negative charge more localized on the SO3 end. The S–S bond length is 2.22 Å, and the "thionate" and "thionite" S–O distances are 1.46 and 1.50 Å respectively.[3]

SODIUM METABISULFITE is a white crystalline or powder solid with a slight sulfur odor. Toxic by inhalation . Strongly irritates skin and tissue. Noncombustible, but may decompose to emit toxic oxide fumes of sulfur and sodium when heated to high temperature. A corrosive acid when mixed with water. Used as a food preservative and as a laboratory reagent.

Sanitization and cleaning agent

It is commonly used in homebrewing and winemaking to sanitize equipment. It is used as a cleaning agent for potable water reverse osmosis membranes indesalination systems. It is also used to remove chloramine from drinking water after treatment.


Sodium metabisulphite


Sodium Metabisulphite SM is used as a preservative in the starch and food industry to control melanosis (black spot) in shrimp; for fermentation in the wine industry; as an antichlor in the chemical industry and as a redox catalyst in the acrylic fibre industry.

The product is also used as a reducing agent in the purification of aldehydes and ketones; in the manufacture of sulphonated oil and resin; for detoxification of cyanide in gold ore processing plants and in the manufacture of photographic chemicals.

Product specifications:

Formula: Na2S2O5
  • Sodium disulphite
  • Sodium pyrosulphite

This product is available in three grades:

  • Food
  • Technical


  • As a preservative in fruits and starch
  • As an enzyme inhibitor in melanin formation (black and brown spots)

Treatment of waste water
As an antichlor and in the detoxification of cyanide and chromate

For bleaching wool and jute

Gold mining
To destroy cyanides

Paper and pulp

  • For bleaching ground wood
  • As an antichlor

Photography and film
For developer solutions and acidifying fixing baths

Packaging and transportation
  • 25kg PPE woven / paper bags with heat-sealed HDPE inner liner
  • 25kg HDPE bags
  • 500kg; 1,000kg; 1,100kg bulk sacks


98% Purity Sodium Pyrosulfite Tech Grade Antichlor For Cotton Bleaching 0

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