Sodium Metabisulfite (or Sodium pyrosulfite) is an inorganic compound consisted of sodium, sulfur and oxygen, which is a white, or yellowish-white crystalline powder that easily dissolves in water. OLE Chemical produces high-quality Na2S2O5. Sodium metabisulfite food grade is widely used as preservative, bleaching or leavening agent, and antioxidant in food.
Sodium Metabisulfite Properties
CAS Registry Number: 7681-57-4
Chemical formula：Na2S2O5, Na-O-(S=O)-O-(S=O)-O-Na
Molar mass：190.107 g/mol
Appearance：White to Yellow powder
Technical Data Sheet
Sodium Metabisulfite Food Grade
Content (as Na2S2O5), % ≥
Iron (as Fe), % ≤
Arsenic (as As), % ≤
Heavy Metal (Pb), w/% ≤
Sodium Metabisulfite Food Grade Applications
Sodium Pyrosulfite Sterilizer
It is used as both a sterilizer and an antioxidant in the process of brewing beer or fermenting wine.
Sodium Metabisulfite Antioxidant
It is used as a preservative and antioxidant for food, such as seafood, dried food, fruits, juices, etc.
Sodium Metabisulfite in Bread
It is used as leavening agent in biscuit, baked food and bread to ferment.
Prior to working with Sodium Metabisulfite you should be trained on its special handling and storage. Contact with moisture or water will release sulfur dioxide gas. The bulk materials must be stored in a cool and well-ventilated area to avoid heat, moisture or combustible materials and segregate from acids and oxidizers.
Sodium Metabisulfite Food Grade Packaging and Transportation
Our Sodium Metabisulfite can be packed to 25 KG / 50 KG / 1000 KG per bag, and the packaging is polypropylene woven bag lined with polyethylene plastic bag, or paper-plastic composite bag, kraft bag, etc. Any other packaging can be customized according to clients’ requirements.