Aure Chemical: Your Reliable Source for High-Purity Sodium Metabisulfite
Aure Chemical is a premier global supplier of high-quality Sodium Metabisulfite (Na₂S₂O₅). With the CAS number 7681-57-4, this versatile inorganic compound typically appears as a white to yellowish crystalline powder with a sulfurous odor. Sodium Metabisulfite is highly soluble in water and is widely recognized for its potent antioxidant and reducing properties, making it an indispensable agent across numerous industries. It plays a critical role as a food preservative, a dechlorinating agent in water treatment, and a key chemical in the pulp and paper, textile, and photographic industries. Aure Chemical's commitment to excellence ensures that our Sodium Metabisulfite meets the stringent purity and performance requirements for your most demanding applications, guaranteeing consistency and reliability.
Basic Information of Sodium Metabisulfite
Sodium Metabisulfite (CAS No. 7681-57-4) is meticulously produced and rigorously tested to meet stringent quality standards. We ensure exceptional purity and consistent performance, essential for your operations:
| CAS No.: | 7681-57-4 |
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| EC No.: | 231-673-0 |
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| Linear Formula: | Na₂S₂O₅ |
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| Molecular Weight: | 192.12 |
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| Appearance: | White to yellowish crystalline powder. |
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| Melting point: | Decomposes around 150 °C (without melting, releasing SO₂) |
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| Density: | 1.48 |
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| Solubility: | Highly soluble in water, forming an acidic solution. Slightly soluble in ethanol. |
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| Nature: | Strong reducing agent. Releases sulfur dioxide gas in contact with acid or water. Hygroscopic. |
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| RIDADR: | UN 3260 8/PG 3 |
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| Chemical Structure: |  |
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Our commitment to delivering high-purity Sodium Metabisulfite ensures a reliable and efficient component for your critical processes.
Primary Applications of Sodium Metabisulfite (Na₂S₂O₅)
Sodium Metabisulfite's strong reducing and antioxidant capabilities, along with its versatility, make it an incredibly valuable and widely used compound with applications across numerous industries:
Food and Beverage Preservative (E223):
It is widely used as a food additive (E223) to prevent spoilage, inhibit enzymatic browning, and control microbial growth in fruits, vegetables, wines, beers, and other food products. It acts as an antioxidant and antimicrobial agent, crucial in the winemaking and brewing industries.
Water Treatment:
Sodium Metabisulfite is an effective dechlorinating agent used to remove residual chlorine and chloramines from drinking water, wastewater, and industrial process water, especially before discharge or further treatment steps (e.g., reverse osmosis and activated carbon filtration).
Pulp and Paper Industry:
In the pulp and paper industry, it is used as a bleaching agent for mechanical pulps, a reducing agent, and a sulfurizing agent in pulping processes to improve paper brightness and strength.
Textile Industry:
It finds application in the textile industry as a bleaching agent for natural fibers (like wool and cotton), as a reducing agent in dyeing and printing processes, and for desizing fabrics.
Photographic Industry:
It is used as a preservative in photographic developers and as a fixing agent, preventing oxidation and maintaining solution stability.
Mining and Metallurgy:
In the mining sector, it is used as a reducing agent in the recovery of gold and other metals from ore. In metallurgy, it can be used for surface treatment.
Chemical Synthesis:
It serves as a reducing agent in various chemical reactions and as an intermediate in the production of other sulfur-containing compounds.
Why Choose Aure Chemical for Your Sodium Metabisulfite Supply?
Aure Chemical is dedicated to providing superior chemical solutions and unparalleled customer support. By partnering with us for your Sodium Metabisulfite requirements, you benefit from:
Exceptional Purity & Consistency: Our Sodium Metabisulfite is manufactured to stringent purity specifications, crucial for maximizing effectiveness in sensitive applications like food preservation and ensuring consistent performance in industrial processes.
Reliable Global Supply Chain: We maintain a robust and efficient supply network, guaranteeing timely and secure delivery of this essential chemical to your facilities worldwide, adhering to all strict safety and regulatory standards.
Expert Technical Support: Our team of experienced chemists and specialists is readily available to offer comprehensive guidance on product application, safe handling procedures, and optimal storage conditions for Sodium Metabisulfite.
Commitment to Quality & Safety: We adhere to the highest industry standards for quality management, safety, and environmental responsibility across all our operations, ensuring peace of mind for our clients.
Choose Aure Chemical for a trustworthy and dependable supply of high-quality Sodium Metabisulfite. We're ready to support your most demanding and innovative industrial processes.
Hazards Classification
GHS Classification: Acute Toxicity (GHS06), Corrosive (GHS05), Exclamation Mark (GHS07)
Hazard Statements: Harmful if swallowed; causes serious eye damage; may cause respiratory irritation; may cause skin irritation.
UN Number: UN 3260
Hazard Class: 8 (Corrosive Substances)
Packing Group: III
GHS06: Acute toxicity
GHS05: Corrosive
GHS07: Exclamation mark
