Zibo Dingqi Chemicals Co., Ltd. is one of the most experienced manufacturers and suppliers of anhydrous aluminum sulfate in China. Welcome to wholesale high quality anhydrous aluminum sulfate made in China here from our factory. For price consultation, contact us.
Product Overview
Anhydrous Aluminum Sulfate (Al2(SO4)3) is a high-purity, water-free inorganic salt manufactured for industrial chemical processing, synthesis, and specialized water treatment applications. For procurement directors, chemical engineers, and industrial buyers, verifying exact chemical assay, residual moisture ceilings, iron thresholds, and physical packaging integrity is essential for seamless process integration.
Technical Specifications & Parameter Reference
|
Technical Parameter |
Specification Benchmark |
Test / Verification Method |
|
Chemical Name |
Anhydrous Aluminum Sulfate |
Gravimetric Analysis |
|
Chemical Formula |
Al2(SO4)3 |
Stoichiometric Calculation |
|
CAS Number |
10043-01-3 |
Registry Verification |
|
Physical Appearance |
White to grayish-white powder or granules |
Visual Inspection |
|
Assay (Al2(SO4)3) |
>= 98.0% |
EDTA Complexometric Titration |
|
Aluminum Oxide (Al2O3) |
>= 29.5% |
Atomic Absorption Spectroscopy |
|
Iron Content (Fe) |
<= 0.005% - 0.05% (Grade dependent) |
Spectrophotometry |
|
Water Insoluble Matter |
<= 0.1% |
Gravimetric Filtration |
|
Free Moisture (H2O) |
<= 0.5% |
Karl Fischer Titration |
|
PH Value (5% Solution) |
2.5 - 3.5 |
Potentiometric Measurement |
Key Product Advantages
High Active Aluminum Content: The complete absence of crystal water yields a greater mass percentage of active aluminum per unit weight compared to hydrated alternatives, reducing overall material consumption in complex chemical formulations.
Optimized Thermal Stability: Manufactured through precisely controlled high-temperature calcination, ensuring stable physical properties under elevated processing temperatures without premature thermal breakdown.
Low Heavy Metal Impurities: Advanced raw material purification processes effectively restrict iron and trace heavy metal levels, preventing unwanted discoloration or catalytic interference in sensitive industrial applications.
Customizable Particle Gradation: Available in both free-flowing fine powders for rapid dissolution and uniform granular forms designed to minimize dust generation during large-scale mechanical handling.
Core Industrial Applications
Industrial anhydrous aluminum sulfate is utilized across specialized sectors requiring a dry, high-concentration aluminum source:
Chemical Synthesis & Catalysts: Acts as a reactive intermediate in the production of specialty aluminum compounds, zeolites, and non-aqueous precipitation catalysts.
Advanced Water Treatment: Deployed in specialized industrial wastewater systems where high-strength coagulation is required without introducing surplus water volume.
Specialty Paper Sizing: Utilized in specific low-moisture paper and surface coating systems to regulate pH and fix sizing agents effectively.
Handling, Safety & Storage Precautions
Due to its high hygroscopic nature and acidic hydrolysis properties, proper storage and handling protocols must be observed:
Moisture Protection: Highly reactive to ambient humidity; material must remain tightly sealed in original packaging until immediate use to prevent caking.
Material Compatibility: Aqueous solutions are corrosive to mild steel and unalloyed aluminum. Storage and transfer systems must utilize corrosion-resistant materials (e.g., FRP, high-density polyethylene, or lined stainless steel).
Storage Environment: Store in a cool, dry, well-ventilated indoor warehouse away from strong bases, moisture, and incompatible alkaline substances.
Quality Control & Manufacturing Verification
Maintaining consistent batch performance relies on rigorous in-house manufacturing controls:
Raw Material Screening: High-purity aluminum hydroxide and sulfuric acid undergo strict incoming assays for heavy metals and iron.
Thermal Dehydration Control: Continuous temperature-regulated calcination ensures complete removal of crystal water without thermal degradation.
Traceability: Each production lot is assigned a unique batch identifier linked to retained laboratory samples and comprehensive Certificate of Analysis (COA) records.
Packaging, Logistics & Supply Chain Compliance
To ensure safe maritime transport and prevent moisture ingress during long-distance delivery:
Packaging Options:
25 kg heavy-duty woven polypropylene bags with inner polyethylene moisture-barrier liners.
500 kg to 1,000 kg flexible intermediate bulk containers (FIBC / jumbo bags) featuring sealed inner liners.
Documentation Support: Every commercial shipment includes a Technical Data Sheet (TDS), Safety Data Sheet (SDS), and a lot-specific Certificate of Analysis (COA).
FAQ
Q: What is the primary advantage of anhydrous aluminum sulfate over standard hydrated grades?
A: The complete absence of crystal water provides a higher active concentration per unit weight and prevents unwanted water input in moisture-sensitive chemical reactions.
Q: How is product caking prevented during ocean freight?
A: Products are packed using multi-layer heavy-duty bags integrated with heat-sealed polyethylene inner liners to completely isolate the material from ambient maritime humidity.
Q: What is the typical minimum order quantity (MOQ) for bulk shipments?
A: MOQ requirements are optimized for full container loads (FCL) to ensure cost-effective global logistics, though trial sample quantities can be arranged for technical evaluation.
Q: What documentation is required to initiate a technical evaluation?
A: Clients can request a complete Technical Data Sheet (TDS), Safety Data Sheet (SDS), and a representative Certificate of Analysis (COA) prior to placing a trial order.
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