Sodium Metabisulphite

- Product Identification
CAS No. : 7681-57-4
EINECS No. : 231-673-0
H.S. Code : 2832.1000
Formula : Na2S2O5
Molecular Weight : 190.10
Synonyms : Dinatriumdisulfit; Disulfito De Disodio; Disulfite De Disodium; Disodium Disulfite; Disodium Salt Pyrosulfurous Acid; Disulfurous Acid, Disodium Salt; Pyrosulfurous Acid, Disodium Salt; Sodium Metabisulfite; Sodium Disulfite; Sodium Pyrosulfite;

- Physical And Chemical Properties
Physical State : White or yellowish crystal powder
Melting Point : 150 C (Decomposes)
Specific Gravity : 1.48
Solubility in water : 54 g/100ml (20 oC); 81.7 g/100ml (100 oC)
NFPA Ratings : Health: 2; Flammability: 0; Reactivity: 0
Stability : Stable under ordinary conditions

- Applications
? Industrial Grade :
- Printing dyeing mordant, Dechlorinating agent for washed fabric.
- Medical deoxidizer and sulfonating agent.
- Bleaching agent of bamboo, wood and paper fiber.
- Non-ferrous mineral separation agent.
- Waste water disposing agent.
- Rubber coagulator.
- Alkyl spice aldehyde in spice industry.
- Depilating agent, softening agent and anti-wear agent in leather industry.
- Reducer of developer and protective agent of fixative in sensitization industry.
? Food Grade :
- Bleaching agent ( Sugar, Pastry, Water-soaked bamboo slices, Mushrooms, etc ).
- Loosening agent ( Bread, Biscuit, etc ).
- Corrosion Protection Antiseptic ( Fruit juice, Can, brewing, grain storage, etc ).
- Antioxidant and Fresh keeping agents ( Lily flower, Sea Food, Fruit, Vegetables, etc ).

- Specification
Testing Items / Quality Standard (Food Grade) / Quality Standard (Industrial Grade)
Purity - Na2S2O5 : 96.5% Min / 96.5% Min
Water Insoluble : 0.05% Max / 0.05% Max
Iron (Fe) : 0.003% Max / 0.005% Max
Arsenic (As) : 0.0001% Max / 0.0001% Max
Heavy Metal (Pb) : 0.0005% Max / -
Clarity : Pass / -

- Transportation
Storage : Store in a cool, dry, well-ventilated warehouse.
Packing : In 25kgs /50kgs /1000kgs net p.p. woven bags

- Other Trade Information
Min. Order Quantity : 25 MTS
Supply Capacity : 22,000mts /Year
Loading Capacity : 27Mts/1080Bags (1x20'FCL)
Port of Loading : Huangpu / Hengyang / Tianjin, China
Fresh Stocks : Yes
Ref. Price : USD305.- ~ USD320.-/MT FOB Huangpu / Tianjin, China
Shipment Time : Within 2-3 weeks upon receipt of advance payment or L/C .
Payment Terms : T/T, L/C ( Sight / 90days ), D/P, Western Union
Origin : Hunan, Tianjin
Sample Availability : Yes
Main Export Markets : South Africa, Thailand, Myanmar, Pakistan, Lebanon, Turkey, Iran, Spain

　

CAS NO:7681-57-4

EC NO:231-673-0

Molecular Formula:Na₂S₂O₅

Molecular Weight:190.1065

Synonyms:;Sodium pyrosulfite;disodium disulphite;Sodium metabisulphite;Sodium disulphite;Sodium pyrosulphite;SODIUM DISULFITE;disodium oxidosulfanesulfonate oxide;Sodium Metabi;Metabisulfite Sodium;Sodium Metabisulfite (Food Grade);

Molecular Structure: