Description
Premium Chemical Preservation Technology
Potassium sulfite, featuring ionic structure with molecular formula K₂SO₃ and CAS number 10117-38-1, appearing as white crystalline solid with exceptional water solubility properties, outstanding reducing characteristics, and superior industrial compatibility across diverse applications, is a specialized inorganic salt with excellent preservative properties, enhanced antioxidant performance, and superior functionality in food preservation, wine making, water treatment, and industrial processing applications. Potassium sulfite (K₂SO₃) is a white crystalline compound that is commonly used for a wide range of food preservation, beverage processing, and industrial chemical purposes. Potassium sulfite is an ionic compound that contains potassium cations and sulfite anions in crystal structure. The compound exhibits excellent water solubility and provides superior reducing properties making it ideal for preservation and chemical processing applications. Potassium sulfite is specifically processed to provide enhanced preservation performance, improved antioxidant efficiency, and superior results in applications requiring effective food protection, reliable chemical reduction, stable processing behavior, and technical-grade performance in food manufacturing, beverage production, photography, and specialized industrial applications. The compound functions as one of the most effective preservatives available, being food-safe and providing excellent antioxidant properties, delivering broad-spectrum preservation functionality, effective reducing performance, excellent processing compatibility under manufacturing conditions, and outstanding safety profile during handling and application. Potassium sulfite represents one of the most versatile and essential preservative chemicals in modern food processing, beverage manufacturing, photographic industries, and chemical processing sectors, providing exceptional preservation efficiency, superior antioxidant properties, excellent environmental compatibility, and outstanding regulatory compliance during manufacturing and application, making it essential for food preservation, wine stabilization, photographic processing, water treatment, and specialized applications requiring high-performance preservation technology and regulatory approval with international safety standards.
At Chemicals & Process Equipment Limited, we supply advanced Potassium Sulfite manufactured under stringent quality control standards and international food processing, beverage production, chemical, and safety specifications. Our comprehensive product range includes various purity grades, crystal sizes, and specialized formulations meeting diverse requirements for food preservation applications, beverage processing, photographic systems, water treatment, and specialized applications across global food, beverage, chemical, and industrial markets.
✅ Advanced Preservation Technology – Optimized Food Protection & Multi-Industry Applications
✅ Consistent Quality Standards – Multiple Product Classifications with Comprehensive Documentation
✅ Essential Reducing Agent – Superior Chemical Properties & Safety Compatibility
✅ Multi-Industry Applications – Food, Beverages, Photography, Water Treatment, Chemical Processing
✅ Technical Support Package – Complete Application Guidance & Performance Optimization
The global potassium sulfite market was valued at approximately USD 85 million in 2023 and is projected to reach USD 125 million by 2030, growing at a CAGR of 5.6% during the forecast period. Market expansion is driven by increasing food preservation demand, growing beverage production, expanding photographic applications, and rising water treatment requirements across multiple sectors.
Technical Specifications & Properties
| Property | Food Grade | Beverage Grade | Photo Grade | Water Treatment | Technical Grade | Analytical Grade |
|---|---|---|---|---|---|---|
| K₂SO₃ Content (%) | 98-99.5 | 97-99 | 96-98 | 94-97 | 90-95 | 99.5-99.9 |
| Potassium (K) Content (%) | 49-51 | 48-50 | 47-49 | 46-48 | 44-47 | 50-52 |
| Sulfur (S) Content (%) | 20-22 | 19-21 | 18-20 | 17-19 | 16-19 | 21-23 |
| Sulfite (SO₃) Content (%) | 50-52 | 49-51 | 48-50 | 47-49 | 45-48 | 51-53 |
| Water Content (%) | 0.1-0.5 | 0.2-0.8 | 0.5-1.5 | 1.0-3.0 | 2.0-5.0 | 0.05-0.3 |
| pH (5% solution) | 8.5-10.0 | 8.0-9.5 | 7.5-9.0 | 7.0-8.5 | 6.5-8.0 | 9.0-10.5 |
| Particle Size (mesh) | 80-200 | 60-150 | 40-120 | 20-80 | 10-60 | 100-250 |
| Water Solubility (g/100ml, 20°C) | 165-175 | 160-170 | 155-165 | 150-160 | 145-155 | 170-180 |
| Bulk Density (kg/m³) | 1100-1400 | 1000-1300 | 900-1200 | 800-1100 | 700-1000 | 1200-1500 |
| Tapped Density (kg/m³) | 1400-1800 | 1300-1700 | 1200-1600 | 1100-1500 | 1000-1400 | 1500-1900 |
| Dissolution Time (min) | 1-3 | 2-5 | 3-8 | 5-12 | 8-15 | 0.5-2 |
| Reducing Value (ml 0.1N I₂/g) | 12-15 | 11-14 | 10-13 | 9-12 | 8-11 | 13-16 |
| Antioxidant Activity (%) | 85-95 | 80-90 | 75-85 | 70-80 | 65-75 | 90-98 |
| Heavy Metals (ppm) | <5 | <10 | <20 | <30 | <50 | <2 |
| Iron (Fe) Content (%) | <0.001 | <0.003 | <0.005 | <0.01 | <0.02 | <0.0005 |
| Lead (Pb) Content (ppm) | <0.5 | <1 | <3 | <5 | <10 | <0.2 |
| Cadmium (Cd) Content (ppm) | <0.1 | <0.3 | <0.8 | <1.5 | <3 | <0.05 |
| Arsenic (As) Content (ppm) | <0.1 | <0.3 | <0.8 | <1.5 | <3 | <0.05 |
| Mercury (Hg) Content (ppm) | <0.05 | <0.1 | <0.3 | <0.5 | <1 | <0.02 |
| Copper (Cu) Content (ppm) | <2 | <5 | <10 | <15 | <25 | <1 |
| Zinc (Zn) Content (ppm) | <5 | <10 | <20 | <30 | <50 | <2 |
| Nickel (Ni) Content (ppm) | <2 | <5 | <10 | <15 | <25 | <1 |
| Chromium (Cr) Content (ppm) | <2 | <5 | <10 | <15 | <25 | <1 |
| Aluminum (Al) Content (%) | <0.005 | <0.01 | <0.02 | <0.05 | <0.1 | <0.002 |
| Calcium (Ca) Content (%) | <0.01 | <0.02 | <0.05 | <0.1 | <0.2 | <0.005 |
| Magnesium (Mg) Content (%) | <0.01 | <0.02 | <0.05 | <0.1 | <0.2 | <0.005 |
| Sodium (Na) Content (%) | <0.05 | <0.1 | <0.2 | <0.5 | <1.0 | <0.02 |
| Chloride (Cl) Content (%) | <0.002 | <0.005 | <0.01 | <0.02 | <0.05 | <0.001 |
| Sulfate (SO₄) Content (%) | <0.1 | <0.2 | <0.5 | <1.0 | <2.0 | <0.05 |
| Thiosulfate (S₂O₃) Content (%) | <0.05 | <0.1 | <0.2 | <0.5 | <1.0 | <0.02 |
| Carbonate (CO₃) Content (%) | <0.02 | <0.05 | <0.1 | <0.2 | <0.5 | <0.01 |
| Nitrate (NO₃) Content (%) | <0.001 | <0.003 | <0.01 | <0.02 | <0.05 | <0.0005 |
| Phosphate (PO₄) Content (%) | <0.001 | <0.003 | <0.01 | <0.02 | <0.05 | <0.0005 |
| Insoluble Matter (%) | <0.01 | <0.02 | <0.05 | <0.1 | <0.2 | <0.005 |
| Free Acid (as H₂SO₄) (%) | <0.01 | <0.02 | <0.05 | <0.1 | <0.2 | <0.005 |
| Free Alkali (as K₂O) (%) | <0.02 | <0.05 | <0.1 | <0.2 | <0.5 | <0.01 |
| Fineness (% through 100 mesh) | 95-100 | 90-100 | 85-98 | 80-95 | 75-90 | 98-100 |
| Whiteness Index | 90-98 | 85-95 | 80-90 | 75-85 | 70-80 | 95-100 |
| Color | Pure White | White | Off-White | Light Gray | Gray | Crystal White |
| Odor | Slight SO₂ | Mild SO₂ | SO₂ | Strong SO₂ | Variable | Odorless |
| Crystal Form | Monoclinic | Monoclinic | Variable | Variable | Variable | Monoclinic |
| Melting Point (°C) | 1069 | 1069 | 1069 | 1069 | 1069 | 1069 |
| Decomposition Temp (°C) | 900-1000 | 900-1000 | 900-1000 | 900-1000 | 900-1000 | 900-1000 |
| Specific Gravity | 2.66-2.68 | 2.65-2.67 | 2.64-2.66 | 2.63-2.65 | 2.60-2.65 | 2.67-2.69 |
| Refractive Index | 1.565 | 1.565 | 1.565 | 1.565 | 1.565 | 1.565 |
| Hygroscopic Nature | Low | Low | Moderate | Moderate | High | Very Low |
| Thermal Stability | Good | Good | Good | Good | Fair | Excellent |
| Chemical Compatibility | Excellent | Very Good | Good | Good | Fair | Excellent |
| Storage Stability | Excellent | Very Good | Good | Good | Fair | Excellent |
| Oxidation Resistance | Good | Good | Fair | Fair | Poor | Excellent |
| Light Sensitivity | Moderate | Moderate | Low | Low | Variable | Low |
| SO₂ Liberation (ppm/g) | 400-450 | 380-420 | 360-400 | 340-380 | 320-360 | 450-500 |
| Electrical Conductivity (mS/cm) | 45-55 | 40-50 | 35-45 | 30-40 | 25-35 | 50-60 |
| Preservative Efficiency | Excellent | Excellent | Good | Good | Fair | Excellent |
| Antioxidant Performance | Excellent | Very Good | Good | Good | Fair | Excellent |
| Reducing Performance | Excellent | Very Good | Good | Good | Fair | Excellent |
| Food Safety Compliance | FDA/EU | FDA/EU | N/A | EPA | N/A | USP |
| Processing Temperature (°C) | 10-60 | 10-70 | 15-80 | 20-90 | 25-100 | 10-50 |
| Application Concentration (%) | 0.01-0.1 | 0.02-0.2 | 0.1-1.0 | 0.5-5.0 | 1.0-10 | 0.001-0.01 |
| Storage Temperature (°C) | 15-25 | 10-30 | 5-35 | 0-40 | -5-45 | 18-22 |
| Relative Humidity (%) | <60 | <65 | <70 | <75 | <80 | <50 |
| Shelf Life (years) | 3 | 3 | 5 | 5 | 5 | 2 |
| Packaging | 25kg Bags | 25kg Bags | 25kg Drums | 50kg Bags | Bulk | 1kg Bottles |
| Regulatory Status | Food Grade | Beverage | Photo Grade | Water Treat | Technical | Analytical |
Available Product Types:
- Food Grade for food preservation and processing applications
- Beverage Grade for wine making and beverage production systems
- Photo Grade for photographic development and processing operations
- Water Treatment Grade for chlorine removal and water conditioning
- Technical Grade for industrial applications and chemical processing
- Analytical Grade for laboratory analysis and research applications
- High Purity Grade for specialized food and pharmaceutical applications
- Anhydrous Grade for moisture-sensitive applications and reactions
- Granular Grade for specific dissolution and processing requirements
- Solution Grade for liquid processing systems and automated dosing
- Custom Formulations for specific application requirements and performance targets
- Stabilized Grade for extended storage and handling applications
- Pharmaceutical Grade for medical and healthcare applications
- Research Grade for academic and scientific research purposes
- Custom Specifications for unique preservation and processing requirements
Specialized Application Solutions:
- Food preservation system optimization and shelf life enhancement
- Wine making process development and stability improvement
- Photographic processing optimization and image quality enhancement
- Water treatment system design and chlorine removal efficiency
- Chemical reduction process development and performance evaluation
- Quality control method development and analytical validation
- Regulatory compliance assistance and technical documentation
- Custom application development and performance testing
- Technical consultation and preservation system optimization services
- Antioxidant system design and performance evaluation
Food Processing Applications
Food Preservation Systems Food manufacturers utilize Food Grade Potassium Sulfite as high-performance preservative for dried fruits, processed foods, and food manufacturing. Food technologists employ potassium sulfite for preservation enhancement, shelf life extension, and food safety improvement providing superior antioxidant properties, excellent preservation efficiency, and outstanding food protection performance with typical application concentrations of 0.01-0.1% depending on food type and preservation requirements.
Dried Fruit Processing Fruit processing companies use Food Grade Potassium Sulfite for dried fruit preservation, color retention, and quality maintenance. Processing specialists employ potassium sulfite for browning prevention, oxidation control, and product stability providing improved color retention, enhanced shelf life, and superior dried fruit quality performance.
Meat & Seafood Processing Meat processors utilize Food Grade Potassium Sulfite for meat preservation, seafood processing, and protein product manufacturing. Food engineers employ potassium sulfite for oxidation prevention, color maintenance, and microbial control providing effective meat preservation, enhanced product quality, and superior protein processing performance.
Bakery Applications Bakery manufacturers use Food Grade Potassium Sulfite for dough conditioning, bread preservation, and baked goods processing. Baking technologists employ potassium sulfite for dough improvement, freshness retention, and quality enhancement providing superior bakery performance, excellent texture improvement, and outstanding baked goods quality.
For comprehensive information about sulfite preservatives and food safety applications, this detailed FDA guidance on sulfite use in food processing provides extensive coverage of sulfite regulations, safety protocols, and proper usage guidelines for food applications.
Beverage Production Applications
Wine Making Operations Winemakers utilize Beverage Grade Potassium Sulfite for wine preservation, fermentation control, and quality enhancement. Wine specialists employ potassium sulfite for oxidation prevention, microbial control, and wine stabilization providing superior wine preservation, excellent flavor protection, and outstanding wine quality performance.
Beer Brewing Systems Breweries use Beverage Grade Potassium Sulfite for beer preservation, brewing water treatment, and fermentation enhancement. Brewing engineers employ potassium sulfite for chloramine neutralization, oxidation control, and beer stability providing effective brewing water treatment, enhanced beer quality, and superior brewing performance.
Juice Processing Juice manufacturers utilize Food Grade Potassium Sulfite for fruit juice preservation, color retention, and quality maintenance. Juice technologists employ potassium sulfite for oxidation prevention, microbial control, and shelf life enhancement providing superior juice preservation, excellent color stability, and outstanding juice quality performance.
Soft Drink Production Beverage companies use Beverage Grade Potassium Sulfite for soft drink preservation, flavor protection, and product stability. Beverage engineers employ potassium sulfite for antioxidant enhancement, quality improvement, and manufacturing efficiency providing effective beverage preservation, enhanced flavor retention, and superior soft drink performance.
Industrial Applications
Photography Processing Photographic labs utilize Photo Grade Potassium Sulfite for film development, photographic processing, and image enhancement. Photography specialists employ potassium sulfite for developer solutions, fixing processes, and image quality improvement providing superior photographic processing, excellent image clarity, and outstanding photography performance.
Water Treatment Systems Water treatment facilities use Water Treatment Grade Potassium Sulfite for chlorine removal, water conditioning, and treatment enhancement. Water engineers employ potassium sulfite for dechlorination processes, water quality improvement, and system optimization providing effective chlorine neutralization, enhanced water quality, and superior water treatment performance.
Chemical Manufacturing Chemical manufacturers utilize Technical Grade Potassium Sulfite for chemical synthesis, reducing reactions, and process chemistry. Chemical engineers employ potassium sulfite for reduction processes, intermediate production, and chemical transformation providing controlled reaction conditions, improved synthesis efficiency, and superior chemical processing performance.
Textile Processing Textile companies use Technical Grade Potassium Sulfite for textile bleaching, fiber processing, and fabric treatment. Textile specialists employ potassium sulfite for bleaching enhancement, color stripping, and textile processing providing effective textile treatment, improved processing efficiency, and superior textile manufacturing performance.
Laboratory Applications
Analytical Chemistry Analytical laboratories utilize Analytical Grade Potassium Sulfite for analytical procedures, standard preparation, and quality control testing. Analytical chemists employ potassium sulfite for redox titrations, analytical methods, and measurement procedures providing accurate analytical results, reliable measurements, and superior analytical performance.
Research Applications Research facilities use Research Grade Potassium Sulfite for research studies, experimental procedures, and scientific investigations. Research scientists employ potassium sulfite for reduction studies, chemical research, and fundamental investigations providing reliable research data, consistent results, and superior research outcomes.
Quality Control Testing Quality control laboratories utilize Analytical Grade Potassium Sulfite for testing procedures, method validation, and analytical standards. QC specialists employ potassium sulfite for analytical validation, measurement accuracy, and testing reliability providing precise analytical results, enhanced testing accuracy, and superior quality control performance.
Educational Applications Educational institutions use Technical Grade Potassium Sulfite for teaching laboratories, student experiments, and academic research. Educators employ potassium sulfite for chemistry demonstrations, laboratory exercises, and educational applications providing effective learning experiences, enhanced understanding, and superior educational outcomes.
Specialty Applications
Agriculture Applications Agricultural companies utilize Technical Grade Potassium Sulfite for soil treatment, plant nutrition, and agricultural processing. Agricultural specialists employ potassium sulfite for soil conditioning, nutrient enhancement, and crop improvement providing effective agricultural treatment, enhanced soil quality, and superior agricultural performance.
Pharmaceutical Processing Pharmaceutical manufacturers use Pharmaceutical Grade Potassium Sulfite for drug formulation, pharmaceutical processing, and medical applications. Pharmaceutical engineers employ potassium sulfite for antioxidant enhancement, stability improvement, and formulation development providing effective pharmaceutical processing, enhanced drug stability, and superior medical performance.
Mining Applications Mining companies utilize Technical Grade Potassium Sulfite for ore processing, metal extraction, and mineral processing. Mining engineers employ potassium sulfite for flotation processes, metal recovery, and processing enhancement providing effective mineral processing, improved extraction efficiency, and superior mining performance.
Cosmetic Applications Cosmetic manufacturers use Food Grade Potassium Sulfite for cosmetic preservation, product stability, and formulation enhancement. Cosmetic specialists employ potassium sulfite for oxidation prevention, shelf life extension, and quality improvement providing effective cosmetic preservation, enhanced product stability, and superior cosmetic performance.
Quality Control & Testing
Comprehensive Quality Assurance Every production batch undergoes extensive testing to ensure compliance with potassium sulfite standards, food safety requirements, chemical specifications, and international quality standards. Our quality control laboratory employs advanced analytical techniques including ion chromatography, atomic absorption spectroscopy, and comprehensive performance evaluation.
Quality assurance procedures include:
- K₂SO₃ content determination using gravimetric analysis
- Potassium content testing using flame photometry
- Sulfur analysis using elemental analysis methods
- Sulfite determination using iodometric titration
- Water content measurement using Karl Fischer titration
- pH measurement using calibrated electrode systems
- Particle size analysis using sieve analysis techniques
- Water solubility testing using dissolution procedures
- Bulk density determination using standardized methods
- Reducing value measurement using iodometric methods
- Antioxidant activity evaluation using DPPH assay
- Heavy metals analysis using ICP-MS techniques
- Iron content testing using atomic absorption spectroscopy
- Lead determination using graphite furnace methods
- Cadmium analysis using electrothermal atomization
- Mercury testing using cold vapor techniques
- Fineness evaluation using sieve analysis procedures
- Color assessment using visual comparison standards
- SO₂ liberation testing using titration methods
- Preservative efficiency evaluation using antimicrobial testing
Storage & Handling Procedures Implement proper storage conditions including controlled humidity and temperature, protection from oxidation and contamination, appropriate food-grade packaging materials, segregation from incompatible substances, and comprehensive safety procedures for maintaining Potassium Sulfite quality and ensuring safe handling throughout storage and application periods.
Environmental & Regulatory Compliance
Food Safety Standards Food Grade Potassium Sulfite complies with FDA regulations, EU food additive directives, and international food safety standards ensuring safe use in food applications with established safety protocols and comprehensive toxicological assessments for food operations.
Beverage Standards Beverage Grade products adhere to TTB regulations, wine making standards, and international beverage requirements ensuring appropriate use in beverage applications with established processing protocols and regulatory compliance for beverage manufacturing.
Industrial Safety Standards All industrial grades meet chemical handling regulations, workplace safety standards, and environmental requirements ensuring safe use in industrial applications with established safety protocols and regulatory compliance for manufacturing operations.
Environmental Compatibility Potassium Sulfite demonstrates excellent environmental compatibility with biodegradable characteristics, minimal environmental impact, and sustainable processing ensuring responsible use in all applications with established environmental safety protocols.
Performance Advantages & Benefits
✔ Superior Preservation – Excellent antioxidant properties and food protection
✔ Outstanding Safety Profile – Food-safe and environmentally compatible
✔ Industrial Versatility – Technical compliance across multiple applications
✔ Chemical Stability – Stable performance under various processing conditions
✔ Multiple Applications – Suitable for food, beverages, photography, and industry
✔ Reducing Excellence – Superior chemical reduction and processing properties
✔ Processing Efficiency – Easy handling and excellent manufacturing compatibility
✔ Quality Enhancement – Improved results in preservation applications
✔ Consistency Performance – Uniform quality across production batches
✔ Regulatory Compliance – Approved for food, beverage, and industrial use
✔ Cost Effectiveness – Economic solution with superior performance characteristics
✔ Storage Stability – Extended shelf life under proper storage conditions
✔ Global Availability – Reliable supply chains and worldwide distribution networks
✔ Technical Versatility – Multiple grade options and processing compatibility
✔ Technical Support – Complete application guidance and optimization services
Our Potassium Sulfite products represent industry-leading standards in preservation technology and chemical processing solutions, specifically manufactured for demanding food applications, beverage production, photographic processing, and advanced industrial operations requiring exceptional preservation characteristics, reliable antioxidant performance, and comprehensive regulatory compliance. We provide complete technical support, application guidance, and performance consultation to ensure optimal results across your specialized food, beverage, photographic, or industrial processing applications.
For detailed specifications, technical data sheets, or application-specific recommendations, contact our specialized potassium sulfite division. We offer complete support including product selection, application optimization, compatibility testing, regulatory guidance, performance monitoring, and technical assistance to maximize effectiveness in your food, beverage, photographic, or industrial processing applications.
For more information about our products, feel free to Contact Us today.
Reviews
There are no reviews yet.