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Sodium Metabisulfite

  • CAS NO: 7681-57-4
  • Grade: Food Grade
  • Purity: 98% min
  • Packaging: 25kg/bag
  • Certifications : ISO, KOSHER, HALAL, HACCP
  • Min Order: 500kg
  • Price: Inquiry

It is white or yellow crystalline powder or small crystal with a strong smell of sulfuric acid, soluble in water. The aqueous solution is acidic. Keeping in air, it oxidizes to Na2S2O6. It is higher than 150 degrees celsius that is to decompose sulfuric acid.

Specification:

ITEM
STANDARD
Appearance
White or light yellow powder
Content  >=%
98
Heavy Metals (Fe)=< %
0.003
Heavy Metals( As)< %
0.0001
Charity
Slightly turbid
SO2>=
65
PH
4.0-5.0
Heavy Metals( Pb)=< %
0.0005

Application:

Food Grade: Bleach agent (e.g. candies, cake, bamboo shoots, etc); Loose agent (e.g. bread, cracker etc); Antiseptic and germicide (e.g. fruit juice, tinned food, brews, the cereals food is defended storage etc); Inhibitor and freshen agent (e.g. day lily, seafood, fruit and vegetable etc).

Industry Grade: Mordant of printing and dyeing; Dechlorinate of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of Stap; Treatment agent of waste water; Rubber solidifying agent Perfume industry is served as hydro carbon perfume aldehyde

The hide profession employ to do to molt dose and pliable dose and wearproof dose; sewage treatment, and so on .

Pharmaceutical Grade: In chemical synthesis in the production of acrylic fibre, vitamin K, vitamin A, pharmaceutical intermediates, etc.

Photo Grade: The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose.

Packaging & Shipping

Packing: polypropylene weaving bag, paper plastic complex bag and kraft lined with polyethylene plastic bag.

Net weight: 25, 50, 1000 kilograms per bag or according to demands from customers.

CAS NO.
7681-57-4
Name
Sodium metabisulfite
Alias
Sodium pyrosulfite; Disodium disulphite; Disulfurous acid disodium salt; Pyrosulfurous acid disodium salt
Formula
Na2S2O5
Formula weight
190.10
Density
1.48
Water solubility
540 g/L (20 ºC)
Melting point
150 ºC
Hazard Symbols
  Xn   
Safety Description
S26;S39;S46   
Risk Codes
R22;R31;R41   
Transport Information
UN 2693
  • Payment term: T/T 30% in advance and T/T 70% against copy of B/L. or 100% L/C at sight.
  • Shipment time: Within 3 weeks after confirming order.
  • We take photos of every stage of the process and can send them to you. Before we ship the container, you will have photos and lab test results.

Provide quality after-sale service once the container is received.

   In case the product is damaged, we will refund you or resend a new packaging.
   Also, if the goods are not as per your specification, we will callback the container at our cost, or compensate you as per our agreement.

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