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Explore the comprehensive insights on sodium metabisulfite for sale, including Sodium Metabisulfite E223, food and industrial preservatives, and detailed comparative data. Dive into manufacturing excellence, technical superiority, and market trends of Sodium Metabisulfite 97.

1. Global Industry Trends of Sodium Metabisulfite

The global sodium metabisulfite industry is accelerating, with an estimated value surpassing USD 1.2 billion in 2023 and CAGR projected at 5.2% until 2030 (source: Grand View Research). Main drivers include rising demand in pharmaceuticals, water treatment, food preservation, and mining industries. The increasing application in sodium metabisulfite food preservative and sodium metabisulfite preservative in bakery and dried foods further anchors its market share.

Key Applications:

Food & Beverage: Preservative (E223)
Water Treatment: Dechlorination agent
Mining & Chemical Industry: Cyanide destruction, reducing agent
Pulp & Paper: Bleaching agent
Textiles: Antichlor, dye auxiliary

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Appearance of industrial grade sodium metabisulfite for sale (manufacturer: Tenger Chemical)

2. Technical Parameters & Supplier Comparison

For discerning buyers searching for sodium metabisulfite for sale, below is a comprehensive table outlining frequently encountered specifications in industrial and food applications, compared across global suppliers:

Parameter	Sodium Metabisulfite 97 (Tenger Chemical)	Global Top Supplier A	Global Top Supplier B	Food Grade E223
Assay (Na2S2O5, %)	≥97.0	95.0-97.0	96.5-97.5	≥97.0
Iron (Fe, ppm)	≤10	≤20	≤15	≤5
Water Insoluble (%)	≤0.05	≤0.1	≤0.1	≤0.05
Heavy Metals (as Pb, ppm)	≤1	≤2	≤2	≤0.5
pH (1% solution)	4.0-4.8	4.0-5.0	4.0-5.0	4.0-4.8
Packaging (kg)	25, 50, 1000	25, 50, 1000	25, 1000	25, 50
Certification	ISO 9001, REACH, SGS	ISO 9001, FDA	ISO 14001	ISO, FDA, Kosher

Data Visualization: Sodium Metabisulfite 97 Specification Breakdown

Pie Chart: Share of ≥97% Assay in Market (by volume, 2023)

Demand Trend (2018-2024, Global Market)

Source: Global Market Report, 2024

Product Highlights

Guaranteed high assay: ≥97% (Na2S2O5)
Ultra-low iron & heavy metals content
Fine particle, rapid solubility
Certified: ISO 9001, REACH, SGS, HACCP (on request)
Customizable packaging: bags, drums, IBCs

3. Sodium Metabisulfite for Sale - Manufacturing Process

The sodium metabisulfite for sale production process at Tenger Chemical combines precision in material quality, advanced automation, and rigorous compliance management, ensuring reliable and consistent output.

High purity sodium metabisulfite food preservative during packing

Typical Manufacture Flow (with Key Controls):

Raw Material Inspection & Selection
High-purity sodium carbonate and sulfur dioxide gas (SO₂) sourced to meet ISO 9001 and ANSI/NSF standards. ICP testing and batch traceability applied.
Sulfonation Reaction
SO₂ gas is bubbled through Na₂CO₃ solution in proprietary reactors under strict temperature (50-70°C) and pH control. This yields sodium sulfite, which further reacts to form sodium metabisulfite.
Centrifugation & Filtration
Product slurry is centrifuged. Advanced filtration via 0.1μm mesh ensures minimal insolubles (<0.05%) and heavy metals removal.
Drying & Crystallization
Vacuum dryers or fluid bed units ensure controlled water reduction to meet specification moisture (<0.8%). Uniform, fine, white or slightly yellowish crystalline powder produced.
Automated Packing & Lab Inspection
Material is packed under nitrogen flush, sealed in triple-lined PE & Kraft composite, batch-numbered.
Random sampling by GC and AAS tests for purity, Fe, Pb, and SO₂ release.
Palletizing & Storage
Units are stacked on IPPC-certified pallets in climate-controlled warehouses complying with GHS & ISO14001 environmental protocols.

(Process schematic: Blue arrow shows direction, each node matches process controls above.)

Quality Control Points:

ICP-OES/GC-MS used for heavy metal and SO₂ analysis
Conforms to ISO 10013 and ANSI quality management
Randomized destructive batch test every 20 tons
Lifetime >2 years in original sealed package (indoor, dry,

Note: Refer to PubChem (CID 24498) for structural formula and advanced chemical information.

4. Technical Advantages & Application Scenarios

What sets Sodium Metabisulfite 97 apart from other sodium metabisulfite for sale on the market? Real-world application cases provide the answer.

Application Matrix:

Industry	Function	Benefits
Water Treatment	Dechlorination, Sulfite Addition	Fast SO₂ release, Scalable dosing
Food Processing	Preservative (E223)	Shelf-life extension, Bleaching
Mining	Cyanide Detoxification	Effective reduction, Safe byproducts
Pulp & Paper	Bleaching, Anti-chlor	Less yellowing, High purity
Oil & Gas	Corrosion Inhibition	Anti-rust, Longer asset life
Textiles & Leather	Dye Bleaching, Auxiliaries	Brilliant finish, Color fixing
Pharmaceutical	Antioxidant, Stabilizer	Non-toxic, US/EU compliant

Typical End User Cases

Petrochemical: Major refineries deploy Sodium Metabisulfite 97 in amine sweetening units for efficient dechlorination and corrosion protection, saving up to 12% on annual maintenance (company whitepaper, 2023).
Food Industry: EU bakery chains employ E223 for white flour treatment and shelf-life extension, complying with FDA and EC No.1333/2008 restrictions.
Mining: Leading gold operations employ metabisulfite-based cyanide destruction, reducing discharge cyanide concentration by an average of 93% per batch.
Municipal Utilities: Over 200 cities globally specify sodium metabisulfite for municipal water dechlorination, per AWWA B603 standard.

Why Choose Our Sodium Metabisulfite 97?

Stringent process control (ISO 9001 certified endpoints)
Heavy metal content far below global maxima
Adapted packaging (dust-resistant, anti-caking, food contact safe)
Proven shelf-life – up to 24 months sealed
Customized solutions for food, water, and industry-specific needs
Track record of supply to Fortune 500 industry leaders

5. Custom Solution & Value-Added Service

Custom Purity & Grade: Industrial, food, and pharma grades available; customized to client-required assay and heavy metal thresholds.
Packaging Options: PE-lined kraft bags (25/50kg), PP woven sacks, 1000kg IBCs, branded or white-label available.
Delivery Flexibility: Sea (FCL/LCL), air, or rail; average global shipment in 7-18 days, express within 5 days for sample runs.
On-site Support: Technical engineers available for process audits, safe handling training, and application optimization/installation.
Regulatory Compliance: Adheres to ISO, FDA (for food), and regional REACH/SGS directives.
Documentation: Full COA, MSDS, batch traceability, third-party QC upon request.

Example Customization: For North American food customers, Sodium Metabisulfite 97 is supplied as E223, compliance-checked for ≤5ppm lead and ≤10ppm iron as per FDA 21CFR 172.175.

6. Client Feedback & Application Cases

“Switching to Sodium Metabisulfite 97 lowered our water treatment costs by 17% and reduced filter changeouts. Product consistency and post-sale technical backup outperformed previous vendors.”
— Chief Engineer, Leading Beverage Plant, EMEA (Case2013109, 2023)

“We required very low heavy metals for infant foods. Your sodium metabisulfite E223 consistently surpasses our QC release for lead and arsenic. Documentation spot on.”
— QA Manager, International Food Group, EU

Global end users in food, chemical, paper, and wastewater consistently rate Sodium Metabisulfite 97 as offering superior cost-in-use, technical reliability and best-in-class service compared to generic sodium metabisulfite preservative brands.

7. Professional FAQ: Everything Technical About Sodium Metabisulfite 97

Q1: What is the chemical formula and CAS number of sodium metabisulfite?: The chemical formula is Na₂S₂O₅; CAS No. is 7681-57-4. It is a white crystalline or powder solid, slightly sulfurous odor.
Q2: What international standards and certifications does Sodium Metabisulfite 97 meet?: Typically: ISO 9001:2015 (QM), SGS, REACH (EU), FDA GRAS (food grade), and ANSI/AWWA B603 for water applications.
Q3: What is the difference between “industrial” and “food grade” sodium metabisulfite?: Food grade (E223) has tighter heavy metal and purity requirements: typically ≥97% assay, ≤0.5ppm lead, and microbial/impurity controls.
Industrial grade may allow slightly higher metals but prioritizes SO₂ yield and anti-cake properties.
Q4: What testing methods are used to guarantee technical purity?: ICP-OES or AAS for metals (Fe, Pb, As), GC-FID for SO₂ release, Karl Fischer for moisture, and titration for Na₂S₂O₅ assay. Batches randomly cross-checked by third parties (SGS/BV).
Q5: What are the recommended safe handling and storage procedures?: Store in original packaging, cool dry environment (<25°C, RH<50%), away from acids/oxidants. Use PPE (gloves, mask), ensure ventilation. Avoid moisture and physical impact to prevent caking.
Q6: What is the standard specification for packaging and marking?: Typically 25/50 kg PE+kraft bags or 1000kg FIBC; carrier/UN No. 3077, batch-to-batch traceability, COA/MSDS and hazard labels in compliance with DOT, IMO, and GHS.
Q7: What is the average delivery/lead time for sodium metabisulfite for sale in bulk?: Typically 7-18 days from confirmed order to port dispatch worldwide. Express and LCL/samples within 5 working days under priority service.

Still have questions? Contact our technical team for tailored support.

8. Delivery, Warranty, and Customer Commitment

Delivery

Global shipping: Major ports covered (FOB/CIF/DDU)
Flexible for bulk, LTL (
Real-time tracking and pre-shipment inspection (SGS/BV)

Warranty & Support

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