High-Quality Aluminum Sulfate
Aluminum Sulfate, with chemical formula Al₂(SO₄)₃·nH₂O and CAS number 10043-01-3, commonly known as Alum, Papermaker’s Alum, or Filter Alum, containing high-purity aluminum oxide typically ranging from 15.8-17.0% Al₂O₃, is a specialized high-performance aluminum-based coagulant appearing as white to off-white crystalline solid or powder with excellent water solubility and outstanding coagulation properties. Aluminum Sulfate is specifically manufactured to provide reliable aluminum ion release characteristics, making it ideal for applications requiring effective suspended solids removal, turbidity reduction, phosphorus removal, and water clarification in municipal water treatment, wastewater processing, paper manufacturing, and industrial applications. The compound works through the release of aluminum ions (Al³⁺) which neutralize negatively charged particles in water, forming flocs that can be easily removed through sedimentation and filtration processes, providing broad-spectrum coagulation activity and superior water treatment performance. Aluminum Sulfate represents one of the most widely used and cost-effective coagulants in water treatment and paper manufacturing industries, providing exceptional clarification efficiency, superior flocculation performance, excellent pH adjustment capability, and outstanding stability during storage, making it essential for municipal water treatment systems, industrial wastewater processing, paper production operations, and specialized applications requiring high-performance coagulation and water treatment characteristics.
At Chemicals & Process Equipment Limited, we supply high-performance Aluminum Sulfate manufactured under stringent quality control standards and international water treatment, paper industry, industrial, and specialty application specifications. Our comprehensive product range includes various purity grades, hydration levels, and specialized formulations meeting diverse requirements for water treatment, paper manufacturing, industrial processing, and specialized chemical applications across global water treatment, paper manufacturing, industrial, and specialty chemical markets.
✅ Advanced Coagulation Technology – Optimized Purity & Multi-Industry Applications
✅ Consistent Quality Standards – Multiple Product Classifications with Comprehensive Documentation
✅ Essential Water Treatment Chemical – Superior Coagulation, Paper Manufacturing & Industrial Performance
✅ Multi-Industry Applications – Water Treatment, Paper Manufacturing, Industrial Processing, Specialty Applications
✅ Technical Support Package – Complete Application Guidance & Performance Optimization
The global aluminum sulfate market was valued at approximately USD 1.8 billion in 2023 and is projected to reach USD 2.4 billion by 2030, growing at a CAGR of 4.2% during the forecast period. Market expansion is driven by increasing water treatment requirements, growing paper manufacturing demand, expanding industrial processing needs, and rising demand for water quality improvement in municipal and industrial applications.
Technical Specifications & Aluminum Sulfate Properties
| Property | Water Treatment Grade | Paper Grade | Industrial Grade | Ferric Grade | Ferrous Grade | Iron-Free Grade |
|---|---|---|---|---|---|---|
| Al₂(SO₄)₃ Content (%) | 99.0-99.5 | 98.5-99.2 | 98.0-99.0 | 97.5-98.5 | 97.0-98.0 | 99.5-99.8 |
| Al₂O₃ Content (%) | 16.5-17.0 | 16.0-16.8 | 15.8-16.5 | 15.5-16.0 | 15.0-15.5 | 16.8-17.2 |
| Iron (Fe) Content (%) | <0.5 | <0.8 | <1.0 | 1.5-2.5 | 2.0-3.5 | <0.05 |
| Water Insoluble (%) | <0.2 | <0.5 | <0.8 | <0.8 | <1.0 | <0.1 |
| pH (1% solution) | 3.0-3.5 | 2.8-3.8 | 2.5-4.0 | 2.5-3.5 | 2.3-3.3 | 3.2-3.8 |
| Free Acid (as H₂SO₄) (%) | <0.2 | <0.5 | <0.8 | <0.8 | <1.0 | <0.1 |
| Chloride (Cl⁻) (%) | <0.005 | <0.01 | <0.05 | <0.05 | <0.08 | <0.002 |
| Heavy Metals (as Pb) (ppm) | <20 | <50 | <100 | <100 | <150 | <10 |
| Arsenic (As) (ppm) | <5 | <10 | <20 | <20 | <30 | <3 |
| Cadmium (Cd) (ppm) | <5 | <10 | <20 | <20 | <30 | <3 |
| Mercury (Hg) (ppm) | <1 | <2 | <5 | <5 | <8 | <0.5 |
| Chromium (Cr) (ppm) | <10 | <20 | <50 | <50 | <80 | <5 |
| Manganese (Mn) (ppm) | <50 | <100 | <200 | <200 | <300 | <20 |
| Zinc (Zn) (ppm) | <50 | <100 | <200 | <200 | <300 | <20 |
| Copper (Cu) (ppm) | <20 | <50 | <100 | <100 | <150 | <10 |
| Nickel (Ni) (ppm) | <20 | <50 | <100 | <100 | <150 | <10 |
| Titanium (Ti) (ppm) | <50 | <100 | <200 | <200 | <300 | <30 |
| Potassium (K₂O) (%) | <0.02 | <0.05 | <0.1 | <0.1 | <0.15 | <0.01 |
| Sodium (Na₂O) (%) | <0.02 | <0.05 | <0.1 | <0.1 | <0.15 | <0.01 |
| Calcium (CaO) (%) | <0.05 | <0.1 | <0.2 | <0.2 | <0.3 | <0.03 |
| Magnesium (MgO) (%) | <0.05 | <0.1 | <0.2 | <0.2 | <0.3 | <0.03 |
| Hydration Level | 14-18 H₂O | 14-18 H₂O | 12-18 H₂O | 14-18 H₂O | 14-18 H₂O | 16-18 H₂O |
| Moisture Content (%) | <1.0 | <1.5 | <2.0 | <2.0 | <2.5 | <0.8 |
| Bulk Density (kg/m³) | 800-1000 | 750-950 | 700-900 | 750-950 | 700-900 | 850-1050 |
| Particle Size (mesh) | 20-100 | 10-80 | 8-60 | 10-80 | 8-60 | 40-120 |
| Crystal Size (mm) | 0.5-2.0 | 0.2-3.0 | 0.1-5.0 | 0.2-3.0 | 0.1-4.0 | 0.3-1.5 |
| Color | White | Off-white | Gray-white | Light brown | Brown | Pure white |
| Appearance | Crystalline | Crystalline | Crystalline | Crystalline | Crystalline | Fine crystals |
| Odor | Odorless | Odorless | Slight | Slight | Earthy | Odorless |
| Solubility @ 20°C (g/L) | 364 | 350 | 340 | 350 | 340 | 370 |
| Dissolution Rate (min) | 2-5 | 3-8 | 2-10 | 3-8 | 2-10 | 1-3 |
| Melting Point (°C) | 86.5 | 86.5 | 86.5 | 86.5 | 86.5 | 86.5 |
| Decomposition Temp (°C) | 770 | 770 | 770 | 770 | 770 | 770 |
| Specific Gravity | 1.69 | 1.69 | 1.69 | 1.69 | 1.69 | 1.69 |
| Refractive Index | 1.47 | 1.47 | 1.47 | 1.47 | 1.47 | 1.47 |
| Hygroscopicity | High | High | High | High | High | High |
| Stability Rating | Excellent | Very Good | Good | Good | Fair | Excellent |
| Storage Temperature (°C) | 5-35 | 0-40 | 0-45 | 0-40 | 0-45 | 10-30 |
| Storage Humidity (%) | <70 | <75 | <80 | <75 | <80 | <65 |
| Shelf Life (years) | 5 | 3 | 3 | 2 | 2 | 5 |
| Container Material | PE/PP/Steel | Steel/PE | Steel | Steel | Steel | PE/Glass |
| Packaging | Bags/Drums | Bags | Bulk/Bags | Bags | Bulk/Bags | Bags |
| Transport Class | Class 8 | Class 8 | Class 8 | Class 8 | Class 8 | Class 8 |
| UN Number | UN1760 | UN1760 | UN1760 | UN1760 | UN1760 | UN1760 |
| Packing Group | III | III | III | III | III | III |
| Hazard Label | Corrosive | Corrosive | Corrosive | Corrosive | Corrosive | Corrosive |
| Application pH Range | 5.5-8.0 | 4.0-7.5 | 4.0-8.5 | 5.0-7.5 | 4.5-7.0 | 6.0-8.5 |
| Temperature Range (°C) | 5-35 | 10-40 | 5-45 | 10-40 | 5-45 | 15-30 |
| Optimal Dosage (mg/L) | 10-100 | 15-150 | 20-200 | 25-120 | 30-150 | 8-80 |
| Coagulation Efficiency (%) | 90-98 | 85-95 | 80-92 | 88-95 | 85-93 | 92-99 |
| Turbidity Removal (%) | 95-99 | 90-96 | 88-94 | 92-97 | 90-95 | 96-99 |
| Phosphorus Removal (%) | 85-95 | 75-88 | 70-85 | 80-90 | 75-88 | 88-96 |
| Color Removal (%) | 70-90 | 80-95 | 65-85 | 75-88 | 70-85 | 75-92 |
| Settling Velocity (m/h) | 2.0-4.0 | 1.5-3.0 | 1.0-2.5 | 1.8-3.2 | 1.5-2.8 | 2.5-4.5 |
| Floc Size (mm) | 2-8 | 3-10 | 2-12 | 3-9 | 2-10 | 3-6 |
| Floc Strength | Good | Excellent | Fair | Good | Fair | Excellent |
| Sludge Volume Index | 80-120 | 100-150 | 120-180 | 90-130 | 100-160 | 70-100 |
| Alkalinity Consumption | High | Medium | High | High | High | Medium |
| Corrosion Potential | Medium | High | High | High | Very High | Low |
| Equipment Compatibility | Good | Fair | Fair | Fair | Poor | Excellent |
| Stainless Steel | Good | Fair | Poor | Poor | Very Poor | Excellent |
| Carbon Steel | Poor | Very Poor | Very Poor | Very Poor | Very Poor | Fair |
| Concrete | Fair | Poor | Poor | Poor | Very Poor | Good |
| PVC/CPVC | Excellent | Good | Good | Good | Fair | Excellent |
| HDPE | Excellent | Very Good | Very Good | Very Good | Good | Excellent |
| Polypropylene | Excellent | Excellent | Excellent | Excellent | Very Good | Excellent |
| FRP | Good | Fair | Poor | Poor | Very Poor | Good |
| Environmental Fate | Stable | Stable | Stable | Stable | Stable | Stable |
| Bioaccumulation | None | None | None | None | None | None |
| Biodegradability | N/A | N/A | N/A | N/A | N/A | N/A |
| Aquatic Toxicity | Low | Low | Medium | Medium | High | Very Low |
| Soil Impact | Acidifying | Acidifying | Acidifying | Acidifying | Acidifying | Acidifying |
| Groundwater Risk | Low | Medium | Medium | Medium | High | Very Low |
| Sludge Characteristics | Dense | Voluminous | Dense | Dense | Dense | Very Dense |
| Regulatory Status | Approved | Approved | Approved | Approved | Approved | Approved |
| NSF Approval | Yes | Limited | No | No | No | Yes |
| AWWA Standard | B403 | B403 | B403 | B403 | B403 | B403 |
| EN Standard | EN 878 | EN 878 | EN 878 | EN 878 | EN 878 | EN 878 |
| JIS Standard | Yes | Yes | Yes | Yes | Yes | Yes |
| FDA Approval | Water treatment | No | No | No | No | Water treatment |
| Kosher Status | Available | No | No | No | No | Available |
| Halal Status | Available | No | No | No | No | Available |
| Cost per kg Al₂O₃ | Medium | Low | Very Low | Low | Very Low | High |
| Application Method | Liquid/Dry | Dry | Dry/Slurry | Dry/Slurry | Dry/Slurry | Liquid |
| Equipment Type | Feeder/Tank | Feeder | Feeder | Feeder | Feeder | Precise feeder |
| Safety Level | Medium | High | High | High | Very High | Low |
| PPE Requirements | Standard | Enhanced | Enhanced | Enhanced | Enhanced | Basic |
| Ventilation Needs | Standard | Enhanced | Enhanced | Enhanced | Enhanced | Standard |
| Training Required | Basic | Standard | Standard | Standard | Enhanced | Basic |
| Monitoring Needs | Standard | Enhanced | Enhanced | Enhanced | Enhanced | Standard |
| Quality Control | Enhanced | Standard | Basic | Standard | Basic | Strict |
| Technical Support | Complete | Standard | Basic | Standard | Basic | Premium |
Available Product Types:
- Water Treatment Grade Aluminum Sulfate for municipal and industrial water treatment
- Paper Grade Alum for papermaking and pulp processing applications
- Industrial Grade Aluminum Sulfate for general industrial and manufacturing uses
- Ferric Grade Aluminum Sulfate with controlled iron content for specialized applications
- Ferrous Grade Aluminum Sulfate with higher iron levels for specific processes
- Iron-Free Grade for applications requiring minimal iron contamination
- Liquid Aluminum Sulfate solutions for direct application systems
- Granular Aluminum Sulfate for controlled dissolution and handling
- Powder Form Aluminum Sulfate for rapid dissolution applications
- Anhydrous Aluminum Sulfate for moisture-sensitive applications
- Food Grade Aluminum Sulfate for approved food processing uses
- Pharmaceutical Grade for medical and healthcare applications
- Technical Grade for laboratory and research applications
- Custom Hydration Levels for specific application requirements
- Blend Formulations with other coagulants and treatment chemicals
Specialized Application Solutions:
- Water treatment system design and coagulation optimization
- Paper manufacturing process optimization and quality enhancement
- Industrial wastewater treatment design and performance improvement
- Coagulation and flocculation system optimization
- Dosing system design and chemical feed optimization
- Sludge management and dewatering improvement programs
- pH adjustment and alkalinity control strategies
- Corrosion control and equipment protection programs
- Environmental compliance and regulatory support
- Process troubleshooting and performance enhancement
- Custom formulation and blending services
- Quality assurance and analytical testing support
Water Treatment Applications
Municipal Water Treatment Municipal water treatment facilities utilize Aluminum Sulfate for raw water coagulation, turbidity removal, and drinking water clarification requiring water treatment grade specifications. Water treatment operators employ aluminum sulfate for suspended solids removal, color reduction, and water quality improvement applications requiring safe drinking water production, regulatory compliance, and consistent water quality with typical dosage rates of 10-100 mg/L depending on raw water characteristics.
Wastewater Treatment Wastewater treatment plants use Aluminum Sulfate for primary clarification, phosphorus removal, and effluent quality improvement requiring wastewater treatment specifications. Wastewater operators employ aluminum sulfate for BOD reduction, suspended solids removal, and nutrient control applications requiring discharge compliance, environmental protection, and treatment efficiency optimization.
Industrial Water Treatment Industrial water treatment systems utilize Aluminum Sulfate for process water clarification, cooling water treatment, and industrial water conditioning requiring industrial grade specifications. Industrial water specialists employ aluminum sulfate for turbidity control, suspended solids removal applications requiring process efficiency, equipment protection, and water quality consistency.
Swimming Pool Treatment Pool maintenance facilities use Aluminum Sulfate for pool water clarification, algae control, and water quality improvement requiring pool treatment specifications. Pool operators employ aluminum sulfate for turbidity removal, suspended particle elimination applications requiring clear water, swimmer safety, and recreational water quality maintenance.
Paper Manufacturing Applications
Pulp and Paper Production Paper manufacturing facilities utilize Aluminum Sulfate for pulp treatment, paper sizing, and quality enhancement requiring paper grade specifications. Paper manufacturers employ aluminum sulfate for rosin sizing, pitch control, and paper strength improvement applications requiring paper quality optimization, production efficiency, and consistent paper characteristics.
Paperboard Manufacturing Paperboard production facilities use Aluminum Sulfate for board treatment, strength enhancement, and quality control requiring paperboard specifications. Paperboard manufacturers employ aluminum sulfate for improved formation, enhanced strength applications requiring board quality, dimensional stability, and performance characteristics.
Recycled Paper Processing Recycled paper facilities utilize Aluminum Sulfate for de-inking processes, contaminant removal, and quality improvement requiring recycled paper specifications. Recycling operations employ aluminum sulfate for ink particle coagulation, stickies control applications requiring fiber recovery, contaminant removal, and recycled paper quality.
Specialty Paper Production Specialty paper manufacturers use Aluminum Sulfate for unique paper products, technical papers, and specialized applications requiring specialty paper specifications. Specialty manufacturers employ aluminum sulfate for specific paper properties, performance enhancement applications requiring specialized characteristics, quality control, and product differentiation.
Industrial Processing Applications
Textile Industry Textile manufacturing facilities utilize Aluminum Sulfate for fabric treatment, dyeing processes, and textile finishing requiring textile specifications. Textile processors employ aluminum sulfate for mordanting, color fixation, and fabric treatment applications requiring color fastness, fabric quality, and consistent textile processing results.
Leather Processing Leather manufacturing facilities use Aluminum Sulfate for hide treatment, tanning processes, and leather production requiring leather industry specifications. Leather processors employ aluminum sulfate for hide preparation, tanning assistance applications requiring leather quality, processing efficiency, and consistent leather characteristics.
Chemical Manufacturing Chemical processing facilities utilize Aluminum Sulfate for chemical synthesis, intermediate production, and manufacturing processes requiring chemical grade specifications. Chemical manufacturers employ aluminum sulfate for catalyst preparation, pH adjustment applications requiring chemical purity, reaction efficiency, and product quality optimization.
Food Processing Food processing facilities use Aluminum Sulfate for water treatment, processing aid applications, and food industry uses requiring food grade specifications where approved. Food processors employ aluminum sulfate for process water treatment, clarification applications requiring food safety, quality assurance, and regulatory compliance.
Specialty Applications
Oil and Gas Industry Oil and gas operations utilize Aluminum Sulfate for produced water treatment, drilling fluid applications, and oilfield water management requiring oilfield specifications. Oil companies employ aluminum sulfate for water clarification, solids removal applications requiring environmental compliance, water reuse, and operational efficiency.
Mining Applications Mining operations use Aluminum Sulfate for mine water treatment, tailings management, and environmental remediation requiring mining specifications. Mining companies employ aluminum sulfate for acid mine drainage treatment, suspended solids removal applications requiring environmental protection, water quality improvement, and regulatory compliance.
Construction Industry Construction companies utilize Aluminum Sulfate for concrete applications, construction water treatment, and building material enhancement requiring construction specifications. Construction professionals employ aluminum sulfate for concrete admixtures, water treatment applications requiring construction quality, durability enhancement, and performance optimization.
Environmental Remediation Environmental companies use Aluminum Sulfate for site remediation, contaminated water treatment, and environmental restoration requiring environmental specifications. Environmental specialists employ aluminum sulfate for heavy metals removal, phosphorus control applications requiring site cleanup, water quality restoration, and environmental compliance.
Quality Control & Testing Procedures
Comprehensive Quality Assurance Every production batch undergoes extensive testing to ensure compliance with aluminum sulfate standards, water treatment requirements, paper industry specifications, and international application standards. Our quality control laboratory employs advanced analytical techniques including atomic absorption spectroscopy, ICP-OES analysis, and comprehensive performance evaluation. For comprehensive information about water treatment chemicals and coagulation standards, visit the American Water Works Association (AWWA) Standards Database which provides detailed specifications for aluminum sulfate and other water treatment chemicals used in municipal and industrial applications.
Quality assurance procedures include:
- Aluminum content determination using ICP-OES and atomic absorption spectroscopy
- Iron content analysis using colorimetric and spectroscopic methods
- Sulfate analysis using gravimetric and ion chromatography methods
- Moisture content determination using loss-on-drying procedures
- pH measurement using calibrated electrodes and standard solutions
- Heavy metals analysis using ICP-MS methods
- Insoluble matter determination using filtration methods
- Particle size distribution analysis using sieve analysis
- Solubility testing using standardized dissolution methods
- Hydration level determination using thermogravimetric analysis
- Free acid content analysis using titrimetric methods
- Chloride content determination using silver nitrate titration
- Coagulation jar testing using standard protocols
- Turbidity removal efficiency evaluation using nephelometry
- Flocculation performance assessment using settling tests
- Phosphorus removal testing using analytical methods
- Color removal evaluation using spectrophotometric methods
- Sludge characteristics analysis using settling tests
- Container compatibility testing using corrosion studies
- Regulatory compliance verification using official methods
- Quality system compliance using ISO standards
- Customer application support using pilot testing
- Performance monitoring using field applications
- Technical consultation using expert evaluation
- Continuous improvement using statistical analysis
Storage & Handling Procedures Implement proper storage conditions including moisture protection, temperature control, protection from contamination, proper ventilation, and comprehensive safety procedures for maintaining Aluminum Sulfate quality and ensuring safe handling throughout storage and application periods.
Market Applications & Industry Trends
Water Treatment Market Growth Growing global water scarcity, increasing water quality regulations, expanding municipal water treatment infrastructure, and rising industrial water treatment needs drive continued demand for coagulants in water treatment applications requiring effective clarification, regulatory compliance, and consistent water quality.
Paper Industry Development Evolving paper manufacturing, increasing recycled content requirements, expanding specialty paper production, and growing packaging demands drive adoption of aluminum sulfate for paper manufacturing applications requiring improved paper quality, production efficiency, and sustainable manufacturing.
Industrial Processing Expansion Advancing industrial processes, increasing environmental regulations, expanding wastewater treatment requirements, and growing industrial water reuse drive development of coagulant applications requiring enhanced performance, environmental compliance, and operational efficiency.
Environmental Compliance Strengthening environmental regulations, increasing discharge standards, expanding water reuse requirements, and rising environmental awareness drive adoption of water treatment chemicals for environmental protection and regulatory compliance applications.
Environmental & Regulatory Compliance
Water Treatment Standards Aluminum Sulfate complies with drinking water regulations, NSF standards, AWWA specifications, and international water quality guidelines ensuring safe and effective use in municipal water treatment applications with established safety criteria and comprehensive quality assessments.
Environmental Protection Standards Adherence to environmental regulations, discharge permits, water quality standards, and international environmental guidelines ensures appropriate use in wastewater treatment applications with established environmental criteria and impact assessments.
Industrial Safety Standards Compliance with industrial safety regulations, occupational health requirements, and international safety guidelines ensures safe handling in industrial applications with established safety protocols and worker protection measures including proper PPE and engineering controls.
Food Safety Standards Where applicable, compliance with food safety regulations, FDA approvals, and international food contact standards ensures appropriate use in food processing applications with established safety criteria and quality assessments.
Performance Advantages & Technical Benefits
✔ Superior Coagulation Efficiency – Exceptional flocculation performance with proven results
✔ Wide pH Range Operation – Effective coagulation across various pH conditions
✔ Rapid Settling Characteristics – Fast floc formation and settling for efficient clarification
✔ High Turbidity Removal – Outstanding suspended solids and turbidity elimination
✔ Phosphorus Removal Capability – Effective nutrient control for environmental compliance
✔ Color Reduction Performance – Superior organic color removal in water treatment
✔ Cost-Effective Treatment – Economical coagulation with reliable performance
✔ Multiple Grade Options – Various formulations for specific application requirements
✔ Excellent Solubility – Rapid dissolution for immediate coagulation activity
✔ Stable Chemical Properties – Consistent performance during storage and application
✔ Regulatory Compliance – NSF approved and AWWA standard formulations
✔ Environmental Compatibility – Established environmental fate and safety profile
✔ Quality Assurance – Consistent purity and performance across production batches
✔ Technical Support – Complete application guidance and optimization services
✔ Multi-Industry Applications – Versatile use across water treatment, paper, and industrial sectors
✔ Global Availability – Reliable supply chains and worldwide distribution
Our Aluminum Sulfate products represent industry-leading standards in coagulation technology and water treatment solutions, specifically manufactured for demanding municipal water treatment applications, paper manufacturing operations, industrial processing systems, and specialty applications requiring exceptional coagulation performance, reliable water clarification, and comprehensive treatment optimization. We provide complete technical support, application guidance, and performance consultation to ensure optimal results across your specialized water treatment, paper manufacturing, or industrial processing applications.
For detailed specifications, technical data sheets, or application-specific recommendations, contact our specialized coagulants division. We offer complete support including product selection, dosage calculations, jar testing, regulatory guidance, process optimization, and technical assistance to maximize effectiveness in your water treatment, paper manufacturing, or industrial processing applications.
For more information about our products, feel free to Contact Us today.














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