Sodium Metabisulfite Na2S2O5 97% Purity Food Industrial Grade
Sodium Metabisulfite is an efficient reductive bleaching agent and bactericide, renowned for its strong sulfur dioxide release characteristics, reductive bleaching capability, and stability under acidic conditions.
Aliases: Sodium Pyrosulfite
English Name: Sodium Metabisulfite
Chemical Formula: Na₂S₂O₅
Molecular Weight: 190.11
CAS Number: 7681-57-4
Key Properties: Strong reducibility, controlled SO₂ release, acidic in aqueous solution, decomposes in acid
Frontier Application Scenarios
Color Preservation Expert in Food Processing
- Dried Fruit Color Protection: Inhibits enzymatic browning, maintains natural color of fruit and vegetable products, prevents vitamin C oxidation
- Winemaking: Serves as bactericide and antioxidant, controls fermentation microorganisms, protects wine flavor stability
Efficient Reduction Specialist in Chemical Synthesis
- Flavor Synthesis Reduction: Acts as selective reducing agent in vanillin and other flavor production, improves product yield
- Paper Pulping Aid: Used in pulp cooking process, reduces cellulose degradation, enhances pulp whiteness
Deoxygenation and Dechlorination Guardian in Water Treatment and Environmental Protection
- Industrial Wastewater Treatment: Removes residual chlorine and heavy metal ions from wastewater, reduces environmental toxicity
- Oilfield Water Injection: Functions as oxygen scavenger, prevents corrosion in water injection systems, extends equipment life
Professional Assistant in Photography and Electronics
- Film Development Fixing: Component of fixing solutions, promotes dissolution of unexposed silver halide
- Circuit Board Etching: Used in electronics industry for etchants formulation, controls etching rate and precision
Technological Breakthroughs and Sustainable Development
- Food-Grade Process Upgrades: Employs multi-stage absorption and recrystallization technologies, strictly controls arsenic, lead and other heavy metal content, meets FDA and EFSA standards
- Tail Gas Recovery Innovation: Develops absorption tower tail gas recycling systems, achieves near-zero SO₂ emissions
- Synergistic Formulation Optimization: Combines with ascorbic acid, citric acid for synergistic use, reduces dosage while enhancing preservation effects
- Green Application Expansion: Replaces methyl bromide and other fumigants in postharvest fruit and vegetable treatment, reduces ozone-depleting substance usage
Packaging & Storage
25kg/bag (woven PP bags with PE liner). Store in a cool, dry place away from moisture and heat.
Why Choose Hongjian Chem?
- ISO 9001-certified manufacturing
- OEM/ODM support with technical guidance
- Global logistics support with flexible order quantities
Contact us for quotes and samples!