Zibo Dingqi Chemicals Co., Ltd. is one of the most experienced manufacturers and suppliers of high purity aluminum sulfate in China. Welcome to wholesale high quality high purity aluminum sulfate made in China here from our factory. For price consultation, contact us.
Product Overview
High Purity Aluminum Sulfate is manufactured for industrial and specialized applications requiring defined chemical composition, controlled impurity levels, and batch-to-batch consistency.
Our production lines supply chemical processing and industrial manufacturing sectors with strict analytical testing. Technical specifications, physical forms, packaging standards, and compliance documentation are aligned with specific industrial purchasing requirements.
Technical Specifications & Grading Matrix
|
Parameter |
Specification Range or Standard |
Analytical Method |
|
Chemical Name |
Aluminum Sulfate |
Titrimetric / Gravimetric |
|
Chemical Formula |
Al2(SO4)3 |
Not Applicable |
|
CAS Number |
10043-01-3 (Anhydrous) / 17927-65-0 (Hydrated) |
Not Applicable |
|
Assay (Al2(SO4)3) |
17.0% to 18.0% minimum (Customizable upon request) |
EDTA Complexometric Titration |
|
Iron Content (Fe) |
0.003% to 0.005% maximum |
Atomic Absorption Spectroscopy (AAS) |
|
Insoluble Matter |
0.05% maximum |
Gravimetric Analysis |
|
PH (5% Solution) |
3.0 to 4.0 |
Glass Electrode pH Meter |
|
Physical Form |
Crystalline Powder, Granular, or Flake |
Visual and Sieve Analysis |
Product Advantages & Manufacturing Differentiation
Low Iron Thresholds: Advanced multi-stage filtration and precipitation techniques maintain iron levels at or below 0.003%, preventing undesirable coloration in downstream applications.
Controlled Insoluble Matter: Optimized reactor parameters and pressure filtration ensure insoluble residues remain strictly under 0.05%, protecting feeding pumps and reaction vessels from scaling or clogging.
Batch Consistency: Continuous analytical tracking using atomic absorption spectroscopy ensures minimal variance in chemical assay across different production lots, supporting stable industrial manufacturing.
Flexible Supply Configurations: Available in multiple physical forms (powder, granular, flake) with moisture-resistant packaging engineered to preserve product integrity during international shipping and extended storage.
Manufacturing Process and Quality Control
Manufacturing high-purity aluminum salts requires strict control across raw material selection, chemical reaction, filtration, crystallization, and drying stages to prevent trace contamination.
Reaction Phase: High-reactivity aluminum hydroxide reacts with high-purity sulfuric acid under monitored temperature and stoichiometric balance to ensure complete conversion.
Purification and Filtration: Multi-stage pressure filtration removes suspended solids, silica, and insoluble precipitates, keeping insoluble matter below strict thresholds (0.05% maximum).
Iron Reduction: Specialized iron-removal agents are introduced during synthesis when specifications demand ultra-low iron levels (Iron content 0.003% maximum) to prevent downstream discoloration.
Analytical Verification: Every production batch undergoes testing using Atomic Absorption Spectrometers for trace metals and automatic titrators for exact assay determination prior to release.
Industrial Applications and Process Compatibility
Chemical Processing and Synthesis
Utilized as a primary raw material for synthesizing downstream aluminum compounds, catalysts, and specialty inorganic chemicals. Controlled iron and alkali metal levels prevent secondary side reactions in complex chemical synthesis.
Specialized Water Treatment Formulation
Applied in high-purity water treatment chemical manufacturing where trace contaminants must be tightly restricted to avoid accumulation in treated effluent or municipal distribution systems.
Specialty Paper Manufacturing
Acts as a sizing and retention agent in advanced papermaking processes. Low iron content prevents discoloration in high-brightness paper grades and protects sizing efficiency.
Storage, Handling, and Shelf Life Guidelines
Proper storage and handling procedures are essential to maintain product integrity, prevent moisture absorption, and avoid caking or equipment corrosion during storage and processing.
Moisture Sensitivity & Caking Prevention
Hygroscopic Nature: Aluminum sulfate is hygroscopic and readily absorbs atmospheric moisture. Store bags or bulk containers tightly sealed in a cool, dry, and well-ventilated indoor environment.
Pallet Storage: Keep pallets elevated off concrete floors using wooden or plastic pallets. Avoid direct contact with walls to promote air circulation and prevent condensation build-up.
Humidity Control: Maintain relative humidity below 65% in storage areas to minimize surface crusting and caking during extended storage periods.
Temperature Ranges
Optimal Storage Temperature: Store between 10 degrees Celsius and 30 degrees Celsius.
Thermal Stability: Avoid exposure to direct sunlight, extreme heat sources, or rapid temperature fluctuations, which can induce moisture migration and accelerated bag degradation.
Compatible Containment and Equipment Materials
Storage Vessels: Use high-density polyethylene (HDPE), fiberglass-reinforced plastic (FRP), or rubber-lined steel tanks for solution storage.
Process Equipment: For solid handling, conveyors, hoppers, and mixing tanks constructed from 316 stainless steel or coated carbon steel are recommended to resist acidic corrosion caused by trace hydrolysis. Avoid unlined carbon steel, aluminum, or copper alloys.
Shelf Life & Inventory Management
Shelf Life: When stored in original, unopened, moisture-resistant packaging under recommended conditions, the product maintains its chemical stability for up to 12 months.
First-In, First-Out (FIFO): Implement a FIFO inventory rotation system to ensure optimal product performance during industrial processing.
FAQ
Q: What is the difference between standard industrial grade and high-purity aluminum sulfate?
A: High-purity grades require strict control over iron content, insoluble matter, and trace heavy metals. Standard industrial grades may contain higher iron levels which can cause discoloration or side reactions in sensitive chemical synthesis and specialty papermaking.
Q: Can physical forms and assay percentages be customized for specific manufacturing processes?
A: Yes. Depending on production schedules and volume requirements, assay percentages, particle size distribution, and packaging formats can be adjusted to match specific industrial processing equipment.
Q: What technical documentation is provided with each shipment?
A: Every commercial batch includes a detailed Certificate of Analysis (COA) verifying actual assay, iron content, and insoluble matter. Safety Data Sheets (SDS) and technical data sheets are provided upon request.
Q: What is the standard minimum order quantity (MOQ) and lead time?
A: MOQ requirements depend on the chosen physical form and packaging type (such as 25 kg bags or 1,000 kg jumbo bags). Standard production and dispatch lead times are confirmed during technical specification review.
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