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CAS 7681 57 4 Sodium Metabisulfite Food Additive White Crystalline Powder

CAS 7681 57 4 Sodium Metabisulfite Food Additive White Crystalline Powder

  • CAS 7681 57 4 Sodium Metabisulfite Food Additive White Crystalline Powder
CAS 7681 57 4 Sodium Metabisulfite Food Additive White Crystalline Powder
Product Details:
Place of Origin: Hunan
Brand Name: Kemsky
Certification: ISO 9001
Model Number: smbs
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: Sodium Metabisulfite SMBS Other Name: Sodium Pyrosulphite SMBS
Grade: Food Tech Grade Usage: Food Additive Preservative, Antioxidant,antistaling Agent,
Packing: 25 Kgs Plastic Woven Bag/1000 Kgs Jumbo Bag Mocular: Na2S2O5
High Light:

sodium pyrosulphite


sodium metabisulfite in food preservation


Price, Payment & shipping terms:

Payment term: 30% deposit in advance, the balance to be paid against B/L faxing; L/C.

Price Validity: 1 week

Delivery term: 1-2 weeks after receiving deposit

Sea freight: As freight always keeps fluctuating, we prefer to finalize this rate before shipment.

food additive sodium metabisulfite/ sodium metabisulphite/ Sodium Pyrosulfite



Product name:Sodium Metabisulphite
CAS No.: 7681-57-4

Molecular Formula:Na2S2O5

Molecule Weight:190.10
Appearance:White crystalline powder

HS Code: 28321000
Quality standard: GB1893-86


Item Chinese standard Company standard
Main content(Na2S2O5) ≥96.5 ≥97.5
Fe(As content Fe) ≤0.003 ≤0.0015
Clarity Pass test Clear
Heavy metal content (Pb) ≤0.0005 ≤0.0002
Arsenic content (As) ≤0.0001 ≤0.0001


Molecular Formula:Na2S2O5
Molecular Weight:190.10
Appearance: white crystal powder.
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
Sodium Metabisulfite is also named Sodium Pyrosulfite, Sodium Metabisulfite is white or slight yellow crystalline powder, with strong smell of SO2, the proportion of 1.4, soluble in water, aqueous solution of Sodium Metabisulfite is acidic, Sodium Metabisulfite contacts with strong acids, released SO2 and generates sodium sulfate, commonly known as Glauber's salt. For a long time in the air, Sodium Metabisulfite can be oxidized into Na2S2O6, so Sodium Metabisulfite can not be stored for a long time. Above 150 degrees Celsius, Sodium Metabisulfite can decompose of SO2. Soluble in water and glycerin, slightly soluble in ethanol. Soluble in water, Sodium Metabisulfite generates into stable sodium bisulfite, pH under 1% aqueous solution ranged from 4.0 to 5.5.


High Purity Sodium metabisulfite
Item index
Main content(Na2S2O5) ≥98
Fe(As content Fe) ≤0.001
Clarity Clear
Water-Insoluble ≤0.01
Heavy metal content(Pb) ≤0.0005
As content(As) ≤0.0001
PH Value 4.0~4.6


Refine level Sodium metabisulfite
Item Index
Main content(Na2S2O5) ≥98.5
NaClcontent ≤0.012
Fe % (As content Fe) ≤0.0005
Water-Insoluble ≤0.005
Clarity Clear
Arsenic(As) content ≤0.00005
Heavy metal content(Pb) ≤0.00005


CAS 7681 57 4 Sodium Metabisulfite Food Additive White Crystalline Powder 0



Metabisulfite Description
Sodium Metabisulfite products are classified into Sodium Metabisulfite food grade and Sodium Metabisulfite industrial grade, with different quality index. Industrial grade Sodium Metabisulfite is mainly used in chemical, pharmaceutical, rubber, leather, printing and dyeing, and other industries. Food grade Sodium Metabisulfite is used in food industry. In food industry, in order to improve the food color, smell, taste and quality, as well as the demand to preserve, fresh and processing technology, food additives are often added. Sodium Metabisulfite is a kind of food additive, which is used as a preservative, antioxidant in food processing.
Industrial grade Sodium Metabisulfite has a wide uses range. In pharmaceutical industry Sodium Metabisulfite is used for purification in chloroform, benzene propyl sulfone and benzaldehyde production; Sodium Metabisulfite is used for coagulant in rubber industry; Sodium Metabisulfite is used for antichlor in cotton bleaching, Cotton mill auxiliary and mordant in printing and dyeing industry; Sodium Metabisulfite is used for leather processing in tanning industry, Sodium Metabisulfite can make leather soft, plump and tough, and make leather own waterproof, anti folding, wear resistance properties; Sodium Metabisulfite can be used for the production of Hydroxyvanilline and Hydroxylamine Hydrochloride in chemical industry; Sodium Metabisulfite can be used as developer in photographic industry.

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Fax: Ningbo Keyuan Holdings Group

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