Sodium Metabisulfite
Product Description
Sodium Metabisulfite is a white or slightly yellow crystalline powder with a strong sulfur odor. It is widely used as a preservative, antioxidant, and reducing agent in industries such as food processing, water treatment, textiles, and mining.
✅ Key Advantages:
✔️ Powerful reducing and bleaching agent
✔️ Cost-effective preservative for food and beverage industries
✔️ Efficient oxygen scavenger in boiler and industrial water treatment
✔️ Stable supply with consistent quality and competitive pricing
Get in Touch With Us
- 📱Tel/WeChat: +86 15315760566
- 💬WhatsApp: +86 15315760566
- ✉️ Email: harris@qibenchemical.com
Grade / Product Types
Available Grades:
🧁 Food Grade (E223): conforms to FCC/GB/INS standards
🏭 Industrial Grade: suitable for water treatment, textiles, leather, and mining
Physical Form:
White or slightly yellow crystalline powder
Sulfur dioxide odor
Standard Packaging:
📦 25kg plastic woven bags with inner PE liner
🧊 1000kg jumbo bags for bulk orders
🏷 OEM private-label printing supported
🖼 Warehouse photos and pallet loading specs available upon request
Typical Specifications
| Item | Typical Value |
|---|---|
| CAS Number | 7681-57-4 |
| Molecular Formula | Na₂S₂O₅ |
| HS Code | 28321000 |
| Purity (as Na₂S₂O₅) | ≥ 96.5%–98.5% |
| SO₂ Content | ≥ 65.0% |
| Iron (Fe) | ≤ 0.003% |
| Arsenic (As) | ≤ 1 ppm (Food Grade) |
| Heavy Metals (Pb) | ≤ 5 ppm (Food Grade) |
| pH (1% Solution) | 4.0–5.0 |
| Insoluble Matter | ≤ 0.05% |
| Appearance | White or yellowish powder |
Main Applications
🏭 Application Fields
🔹 Food & Beverage
– Used as a preservative and antioxidant in dried fruits, wine, beer, canned vegetables, and fruit juices.
– Inhibits enzymatic browning and microbial growth.
🔹 Water Treatment
– Acts as an effective oxygen scavenger to prevent corrosion in boiler systems.
– Neutralizes chlorine in wastewater.
🔹 Textile & Leather
– Used as a bleaching agent for wool and in tanning processes.
– Helps remove excess dyes and improve brightness.
🔹 Mining & Chemical
– Reagent in ore flotation and cyanide detoxification.
– Used for cleaning reverse osmosis membranes and equipment.
🔹 Photography & Pulp Industry
– Serves as a fixing agent and antioxidant.
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Frequently Asked Questions
Here we’ve gathered answers to common questions about our products, packaging, shipping, and support. Feel free to contact us if you need more details.
Yes, free samples are available for quality testing. Shipping costs can be discussed based on your location.
We offer sea, air, and train freight depending on your country and quantity. FOB, CIF, and DDP terms are all available.
Each batch is strictly tested before delivery. COA and third-party inspection (SGS/BV) can be provided if required.
Yes. We support private labeling, palletizing, custom printing, and OEM packaging solutions.
Our products are widely exported to Southeast Asia, the Middle East, Africa, Europe, and South America with stable long-term clients.
