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Sodium Metabisulfite: Properties, Applications, Safety, and Sourcing
Sodium Metabisulfite (CAS No: 7681-57-4). Whether you are in the food processing industry, wastewater treatment, or textile manufacturing, understanding the chemistry and application of this inorganic compound is essential for operational excellence.
At ChemicalsSuppliers.com, we pride ourselves on being the global hub for high-purity chemical solutions. This comprehensive guide will navigate the intricacies of Sodium Metabisulfite, from its molecular structure to its procurement strategies.
Sodium Metabisulfite, also known by synonyms such as Sodium Pyrosulfite or Disodium Pyrosulfite, is an inorganic compound with the chemical formula Na₂S₂O₅. It appears as a white, crystalline, or powdery substance with a slight sulfurous odor.
When dissolved in water, it releases sulfur dioxide (SO₂), which acts as a powerful antioxidant, antimicrobial agent, and reducing agent. This property makes it a staple in various commercial sectors.
The food sector is perhaps the largest consumer of Sodium Metabisulfite. It is used as a preservative (E223) to prevent the browning of dried fruits, inhibit bacterial growth in wines, and maintain the shelf life of various food products.
Sodium Metabisulfite is highly effective in dechlorinating water. It reacts with residual chlorine or chloramines, making it vital for municipal water treatment plants and industrial boiler systems to prevent corrosion.
In gold mining, it is used to detoxify cyanide-containing waste streams. By reducing the hazardous cyanide to less harmful cyanates, it ensures compliance with environmental safety regulations.
It serves as a bleaching agent and an anti-chlor treatment in the textile industry to remove excess bleach from fabrics after the whitening process.
Given its chemical nature, handling Sodium Metabisulfite requires strict adherence to safety protocols.
Check our Safety Data Sheet (SDS) Library for specific handling instructions.
At ChemicalsSuppliers.com, we offer a vast inventory of industrial reagents. Below is a curated list of related chemicals, their common uses, and how to source them.
| No | Chemical Name | Industry Use | Price Range (USD) |
|---|---|---|---|
| 1 | Sodium Sulfite | Water Treatment | $0.80 – $1.50/kg |
| 2 | Sodium Bisulfite | Bleaching | $0.70 – $1.30/kg |
| 3 | Potassium Metabisulfite | Winemaking | $2.00 – $3.50/kg |
| 4 | Citric Acid | Food Industry | $1.20 – $2.10/kg |
| 5 | Hydrogen Peroxide | Sanitization | $0.50 – $1.20/kg |
| 6 | Sodium Thiosulfate | Photography | $1.50 – $2.50/kg |
| … | See full list of 50+ items on our website | … | … |
(Note: Prices fluctuate based on market demand and quantity. Request a custom quote here.)
Purchasing chemicals can be a complex logistical challenge. We streamline the process by offering:
To serve our international clientele, here are the terms for Sodium Metabisulfite in various languages:
When ordering for large-scale operations, consider these expert tips:
Sodium Metabisulfite remains an indispensable tool for modern industry. Whether you are preserving food, mining precious metals, or treating industrial wastewater, the quality of your reagents dictates the success of your final product.
Visit ChemicalsSuppliers.com today to browse our full catalog, view current pricing, and speak with a specialist who understands your unique chemical requirements.
Q: Is Sodium Metabisulfite safe for human consumption? A: When used within the legally permitted limits in food manufacturing, it is considered safe. However, individuals with sulfite sensitivity or asthma should avoid products containing it.
Q: Does it have a shelf life? A: Typically, it remains stable for 12–24 months if stored in a tightly sealed container away from moisture and heat.
Q: How do I order in bulk? A: Simply visit our Bulk Order Portal to receive competitive wholesale pricing.
