Our company supplies high-quality Sodium Metabisulfite (Chemical Formula: Na₂S₂O₅, CAS: 7681-57-4). It is a white or slightly yellow crystalline powder with a pungent odor. The main content (Na₂S₂O₅) reaches ≥96.0% / ≥97.0%. We have abundant in-stock goods and provide sodium metabisulfite in multiple grades.
Advantage
Sufficient Content
High specifications of 96% and 97% are available, featuring high purity and low impurities.
Strong Reducibility
Excellent performance in reduction, bleaching, preservation and deoxygenation.
Multiple Grades Available
Full specifications of industrial grade and food grade are provided.
Customized Service
Support bulk orders and one-stop supporting services.
Product Parameters
|
Indicator Name |
Indicator Requirement |
|
Appearance |
White crystalline powder |
|
Sodium metabisulfite W/% |
≥ 96.5 |
|
Insoluble substances in water, W/% |
≤ 0.05 |
|
Iron (Fe), W/% |
≤ 0.003 |
|
Arsenic (As), mg/kg |
≤ 1.0 |
|
Heavy metals (calculated as Pb), mg/kg |
≤ 5.0 |
Applications
Our Water Sodium metabisulfite is widely used in industrial and Food Industry
- In food industry, our food-grade sodium metabisulfite acts as bleaching agent for candy, pastries, yuba and vermicelli. It also serves as preservative and antioxidant for preserved fruits, dried fruits, wine, juice, canned mushrooms and seafood. Besides, it works as leavening agent for baked goods and color fixative to prevent produce browning and retain fresh color.
- Industrial-grade sodium metabisulfite is widely used. It is applied in textile printing and dyeing for bleaching, dechlorination and auxiliary treatment. It also serves for water treatment to remove chlorine and oxygen and treat wastewater. Besides, it can be used as a reducing agent in chemical synthesis, leather processing agent and rubber coagulant.

-
shanghaiShenzhen Mandarin Oriental Hotel
Packaging & Logistics
Packaging
- 25kg bags (PE/PP woven bags)
- 1000kg / 1250kg jumbo bags
- OEM packaging supported (logo, design, private label)
Shipping
- Sea freight (FCL / LCL bulk orders)
- Air freight (small urgent orders)
- Land transport (regional delivery)
Delivery Time
- Sea freight: 20–35 days depending on destination
- Air freight: 5–10 days for urgent orders
![]() |
![]() |
Why Choose Us
Strong Capacity
Annual output: 80,000 tons of magnesium sulphate; 100,000 tons for sodium bicarbonate, calcium chloride, magnesium chloride and related products. Customized products are continuously updated.
Product Advantages
Large-scale production controls cost. Prices are 1% lower than the market. All goods meet ISO & SGS standards. Fast shipment within 15 days.
Professional Service
Experienced sales team with 30-minute quick response. Stable and trustworthy cooperation for long-term business.
Cooperation Concept
Provide high-quality, cost-effective chemicals to support customers' market development and growth.

FAQ
Q: Do you have stock?
A: Adequate stock and stable supply all year round.
Q: Can you provide certificates?
A: COA, SGS and related documents are available.
Q: How to store it?
A: Keep dry, cool and sealed, away from strong acid.
Q: Do you offer OEM packaging?
A: Yes, we provide full OEM services, including logo printing, customized packaging design, and weight adjustment.
Q: What is your minimum order quantity (MOQ)?
A: MOQ depends on the packaging type and destination. We support flexible bulk orders for distributors and project buyers.
Hot Tags: na2s2o5 sodium metabisulfite, China na2s2o5 sodium metabisulfite manufacturers, suppliers, factory, Reducing Agent sodium metabisulfite, good quality sodium metabisulfite chemical, 25kg Sodium Metabisulfite, sodium metabisulfite, Bleaching agent sodium metabisulfite, industrial grade sodium metabisulfite

