Product Description
Sodium Metabisulfite is most commonly used as preservative & antioxidant in food processing industry with E number E223. It is known to appear as white to yellow colored powder with slightly SO2 like odor and molecular weight of 190.107 g/mol. This compound shows density of 1.48 g/cm3 with melting point of about 170 degrees Celsius. It is soluble in water & glycerol and also finds application for cleaning & sanitizing purpose. Sodium Metabisulfite is considered to be perfect for use in potable RO water systems for cleaning of membranes. It can be industrially produced by evaporation of sodium bisulfite that is saturated with sulfur dioxide.
Food Grade :
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Item
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Chinese standard
GB1893-2008
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Company standard
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Main content(Na2S2O5)
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96.5
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97.5
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Fe(As content Fe)
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0.003
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0.0015
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Clarity
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Pass test
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Clear
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Heavy metal content (Pb)
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0.0005
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0.0002
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Arsenic content (As)
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0.0001
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0.0001
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- 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
Industrial grade Sodium metabisulfite
Quality standard :
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Item
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Chinese standard
HG/T2826-2008
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Company standard
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Top-grade
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First grade
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|
Main content(Na2S2O5)
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96.5
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95.0
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97.0
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|
Fe %( Fe)
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0.005
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0.010
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0.002
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Water-Insoluble
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0.05
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0.05
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0.02
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Arsenic(As) content
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0.0001
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--
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0.0001
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Net weight: 25, 50, 1000kilograms per bag or following your demands.
Superior Quality and PuritySodium Metabisulfite meets stringent food-grade specifications with an assay of at least 97% and overall purity between 96%-98%. The product exhibits low levels of iron, chloride, and heavy metals, ensuring suitability for sensitive food processing tasks. Visual inspection reveals a white or slightly yellowish crystalline appearance, attesting to its purity.
Safety and Storage GuidelinesThis product is classified as Hazard Class 8, indicating corrosive propertieshandle with care and appropriate personal protective equipment. Store Sodium Metabisulfite in a cool, dry, and well-ventilated place, away from direct sunlight and moisture, to preserve its chemical stability and shelf life, which is up to 2 years.
Applications in the Food IndustryUsed widely as a preservative, antioxidant, and bleaching agent, Sodium Metabisulfite is integral in preventing spoilage, retaining color, and enhancing shelf life for food products. Its efficacious sulfur dioxide content ensures reliable performance in food preservation and processing, meeting the demands of manufacturers and distributors globally.
FAQs of Sodium Metabisulfite Food Grade:
Q: How is Sodium Metabisulfite Food Grade used in food processing?
A: Sodium Metabisulfite Food Grade functions as a preservative, antioxidant, and bleaching agent in food industries. It helps prevent spoilage, maintains the color of foods, and extends shelf life when added to products during manufacturing.
Q: What benefits does Sodium Metabisulfite bring to food manufacturers?
A: The compounds high purity minimizes risk of contamination, while its strong SO2 content ensures effective preservation. This leads to reduced product waste, longer shelf stability for foods, and improved color retention throughout processing and storage.
Q: Where should Sodium Metabisulfite Food Grade be stored to preserve its shelf life?
A: It should be kept in a cool, dry, and well-ventilated area, away from moisture and direct sunlight. Proper storage conditions maintain its chemical stability and extend usability for up to two years.
Q: When is Sodium Metabisulfite typically added during food production?
A: Manufacturers usually incorporate Sodium Metabisulfite at various stages during food processing, depending on the specific applicationeither early for preservation or later to maintain color or reduce oxidation.
Q: What safety measures should be followed when handling Sodium Metabisulfite?
A: As a Hazard Class 8 corrosive material, it requires suitable personal protective equipment. Avoid direct contact, inhalation, and exposure to moisture. Always follow local chemical handling and disposal guidelines.
Q: How does Sodium Metabisulfites molecular composition enhance its preservation properties?
A: Its molecular formula Na2S2O5, with a sulfur dioxide content of 56%-58%, releases SO2 in solution, which inhibits microbial growth and slows oxidation, contributing significantly to food preservation processes.
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