Dried Aluminium Hydroxide Gel
High-Purity Industrial & Pharmaceutical Grade Dried Aluminium Hydroxide Gel – Reliable Bulk Supplier for Catalyst Systems, Pharmaceutical Processing, Ceramics, and Specialty Chemical Applications
Dried Aluminium Hydroxide Gel is a high-purity, amorphous aluminium hydroxide material produced by controlled dehydration of hydrated aluminium hydroxide gel. It functions as a multi-purpose industrial intermediate and formulation additive with applications requiring controlled reactivity, high surface area, and consistent particle morphology.
Supplied through verified manufacturing partners and quality-validated distribution channels, this material is widely specified in pharmaceutical processing, catalyst systems, ceramics, coatings, specialty chemicals, and polymer compounding where physicochemical uniformity is critical.
Chemical Identity
| Parameter | Value |
|---|---|
| Chemical Name | Aluminium Hydroxide |
| Synonyms | Hydrated Alumina (Dried Gel Form), Alumina Trihydrate (processed gel), Al(OH)₃ |
| Molecular Weight | 78.00 g/mol |
| Chemical Formula | Al(OH)₃ |
| CAS Number | 21645-51-2 |
| Physical Form | White amorphous powder |
| Odor | Odorless |
| Solubility | Insoluble in water; soluble in acids and strong alkalis |
| pH (10% slurry) | 7.5 – 9.5 |
Technical Properties
Precise physical and chemical characteristics engineered for consistent industrial performance.
| Property | Typical Range | Functional Significance |
|---|---|---|
| Al₂O₃ Content | 60–66% | Determines neutralization capacity and catalytic behavior |
| Loss on Drying | ≤5% | Indicates residual moisture stability |
| Bulk Density | 0.3–0.7 g/cm³ | Affects flowability and dosing accuracy |
| Particle Size (D50) | 1–20 µm | Influences dispersion and surface reactivity |
| Specific Surface Area | 50–300 m²/g | Critical for adsorption and reaction kinetics |
| Ignition Loss | 30–35% | Confirms hydroxyl content |
| Residual Chloride | ≤0.05% | Prevents corrosion or catalytic poisoning |
Values vary by grade and particle engineering.
Key Functional Benefits
Six core performance attributes driving industrial adoption
High Adsorption Capacity
Amorphous gel-derived structure provides exceptional surface area for superior adsorption performance across pharmaceutical and catalyst applications.
Controlled Neutralization
Effective pH regulation in acidic formulations and process streams delivering consistent, repeatable results across production batches.
Dispersion Stability
Uniform dispersion in liquid or semi-solid matrices ensures formulation consistency, homogeneity, and long-term product stability.
Thermal Decomposition to Alumina
Controlled endothermic conversion at 200–300 °C enables refractory, flame retardant synergist, and catalyst precursor applications.
Low Impurity Profile
Strict heavy metal and ionic impurity controls make it suitable for regulated pharmaceutical and food-grade manufacturing environments.
Non-Abrasive Morphology
Gentle amorphous particle form protects sensitive mixing equipment while ensuring uniform distribution in high-shear processing operations.
Industrial Applications
Across six high-value sectors demanding precision-grade aluminium hydroxide
Used as an intermediate for antacid actives, vaccine adjuvant precursors, and controlled-release formulations requiring stable aluminium hydroxide matrices. Meets pharmacopeial standards with full traceability and documentation support for regulated manufacturing.
High surface area carrier and metal salt-compatible precursor for supported catalyst systems. Ultra-low chloride content (≤0.05%) prevents catalytic poisoning in sensitive metal-loaded systems requiring maximum interfacial reactivity.
Consistent alumina source and binder precursor that improves fired strength and thermal stability in sintered ceramic components. Optimized particle morphology ensures uniform green-body forming and predictable sintering performance.
Functional filler and flame retardant synergist via endothermic decomposition and water release at 200–300 °C. Non-abrasive amorphous morphology is gentle on high-shear mixing equipment while ensuring uniform distribution throughout the compound.
Fine particle dispersion and chemical inertness deliver specialty coating films with uniform optical properties and stable film formation. Consistent particle size distribution is critical for achieving the required surface smoothness and gloss profile.
High surface area enables effective adsorption and coagulation support in specialty industrial process water purification systems. Suitable for applications requiring removal of trace contaminants, suspended solids, and ionic species from process streams.
Grades / Specifications Available
Five precision-engineered grades supplied to match your process conditions and regulatory requirements
Pharma Intermediate Grade
Controlled heavy metals, tight particle size distribution meeting pharmacopeial standards — for antacid actives, vaccine adjuvant precursors, and controlled-release formulations with full batch documentation and traceability.
Catalyst Support Grade
High specific surface area with ultra-low chloride specification optimized for supported catalyst manufacturing requiring maximum interfacial reactivity and minimal ionic contamination of metal-loaded systems.
Ceramic Grade
Optimized particle morphology for ceramic and refractory applications — provides consistent alumina source and binder precursor properties for improved green-body forming, sintering performance, and fired strength.
Industrial Grade
Cost-efficient specification for bulk industrial applications across polymer compounding, coatings, water treatment, and process chemical manufacturing where broad specification ranges are acceptable.
Custom Specification Lots
Tailored particle size distributions, moisture content, and purity levels for OEM requirements and specialized formulation needs. Technical team consultation included for specification development and validation.
💡 Need Help Selecting the Right Grade?
Our technical team provides expert consultation on grade selection based on your specific application requirements, processing conditions, and regulatory compliance needs. Contact us to discuss your formulation challenges and receive customized solutions.
Quality Control Parameters
Every lot validated through a structured 8-parameter acceptance protocol before release
Aluminium Assay Verification
Rigorous confirmation of Al₂O₃ content (60–66%) meets specified purity standards for each batch released from supplier facilities.
Particle Size Distribution (Laser Diffraction)
Precise D50 measurement (1–20 µm) and full PSD profile to confirm particle characteristics and production batch uniformity.
Moisture Determination (LOD)
Controlled moisture levels (≤5%) verified to ensure optimal storage stability, flowability, and dosing accuracy across all grades.
Surface Area Testing (BET Method)
Verified specific surface area (50–300 m²/g) for adsorption and catalytic performance assurance aligned to grade specification.
pH Evaluation in Slurry Form
Confirmed pH range (7.5–9.5 in 10% slurry) for formulation compatibility and process suitability assessment per application.
Heavy Metal Trace Analysis
Comprehensive screening for regulated heavy metals to meet pharmaceutical, food-grade, and catalyst regulatory compliance requirements.
Residual Ion Content
Chloride (≤0.05%) and other ionic impurity verification critical for catalyst support and pharma-grade material qualification and release.
Bulk Density Verification
Tapped and loose bulk density (0.3–0.7 g/cm³) confirmed to ensure correct volumetric dosing, packaging fill performance, and handling behaviour across all supplied grades.
Certificates of Analysis are batch-specific and fully traceable.
Packaging & Supply
Four packaging formats engineered for safe handling at every scale of operation
Multi-layer HDPE Bags with Liner
Moisture barrier and contamination protection. Inner liner seals product integrity for standard handling quantities.
Fiber Drums for High-Purity Grades
Optimal protection for pharmaceutical and catalyst-grade materials demanding strict cleanliness and purity control.
Jumbo Bags for Bulk Industrial Users
Large-scale FIBC packaging (500–1000 kg) for high-volume industrial requirements with efficient forklift handling.
Palletized Export Shipments
Export-ready packaging with full shipping documentation for international logistics and customs clearance support.
Supply programs include contract sourcing, scheduled dispatch, and multi-origin sourcing continuity.
Storage & Handling
Four key guidelines to maintain product integrity throughout its 24-month shelf life
Store in Dry, Well-Ventilated Environment
Maintain proper environmental controls to preserve product quality and prevent moisture absorption that degrades flowability and formulation accuracy.
Protect from Humidity & Contamination
Keep packaging sealed at all times and avoid exposure to humid environments to maintain specification integrity and prevent particle agglomeration.
Avoid Compression During Stacking
Excessive stacking pressure compresses the powder structure and causes agglomeration that reduces flowability and impairs dosing accuracy in processing.
Use Dust Control During Handling
Required for fine grades to ensure workplace safety, minimize airborne particle exposure, and comply with local occupational dust control regulations.
Shelf life is typically 24 months under recommended storage conditions.
Regulatory / Safety Information
Classified as non-hazardous under most transport regulations — complete documentation with every shipment
Safety Data Sheet (SDS)
Complete hazard classification, first-aid measures, PPE requirements, and handling guidelines. Avoid inhalation of dust; appropriate respiratory protection required in powder handling environments.
Technical Data Sheet (TDS)
Grade-specific specifications, physical properties, typical analytical results, and application performance data for technical evaluation and formulation planning purposes.
Certificate of Analysis (COA)
Batch-specific quality verification with actual test results for each parameter. Fully traceable to manufacturing batch, lab testing records, and the supplier documentation chain.
Regulatory Compliance Declarations
Supporting documentation for REACH, RoHS, and local regulatory requirements. Compliance declarations for pharmaceutical, food, and industrial applications provided on request.
Follow local occupational exposure limits and dust control regulations during all handling operations.
Why Industries Source from Natraj Chem
- Established chemical supply expertise since 1984
- Deep technical background in aluminium derivative materials
- Qualified manufacturer network with documented verification protocols
- Strict incoming material inspection and QC validation on every lot
- Consistent batch-to-batch reproducibility across all supplied grades
- Reliable logistics and supply continuity programs
- Specification-driven technical sourcing for exact tolerance matching
The company operates as a technical sourcing partner, ensuring industrial buyers receive material that meets exact specification tolerances without production variability risks.
Technical Support & Documentation
Expert technical assistance from personnel familiar with industrial chemical specifications and performance criteria
Grade Selection Guidance
Expert consultation on choosing the optimal product grade based on your specific application performance requirements, regulatory compliance tier, and processing conditions.
Formulation Compatibility Evaluation
Assessment of product suitability with your existing formulations, process chemistry, and equipment — including matrix interaction and dispersion compatibility review by grade.
Specification Matching & Development
Customized specification sheets to meet your precise technical and regulatory requirements, including particle size, surface area, moisture, and impurity profile tolerances.
Regulatory Documentation Package
COA, TDS, SDS, and regulatory compliance declarations provided for all supplied material grades — comprehensive documentation package ready on dispatch for every shipment.
Application Suitability Consultation
Detailed technical consultation on optimal usage parameters, loading levels, and integration methodology within your specific manufacturing or formulation environment.
Bulk Procurement & Supply Planning
Strategic sourcing coordination, volume pricing structures, scheduled dispatch programs, and multi-origin contingency planning for large-volume and contract supply requirements.
Frequently Asked Questions
It is used as a high-surface-area aluminium hydroxide material for catalysts, pharmaceuticals, ceramics, polymers, and specialty formulations requiring controlled reactivity and consistent particle morphology.
It is chemically similar but differs structurally; gel-derived material is typically amorphous with higher surface area, distinguishing it from crystalline alumina trihydrate forms.
It decomposes endothermically around 200–300 °C, releasing water and forming aluminium oxide. This thermal decomposition makes it valuable as a flame retardant synergist and refractory precursor.
No. It is insoluble in water but dissolves in mineral acids and strong alkali solutions, making it stable in aqueous formulations at neutral pH.
Higher surface area increases adsorption capacity, catalytic efficiency, and reactivity. For catalyst support and pharmaceutical applications, specific surface area is a critical functional parameter.
Pharmaceutical, catalyst, polymer, ceramic, and specialty chemical manufacturers are the primary buyers, along with water treatment and coatings producers.
Yes. Industrial buyers can request controlled particle size distributions for specific processing needs, from fine pharmaceutical grades to coarser industrial specifications.
Grades range from industrial to high-purity controlled-impurity specifications, including pharma intermediate and catalyst support grades with documented impurity profiles.
Yes. Excess moisture reduces flowability and can alter formulation consistency and dosing accuracy. Loss on drying is therefore a controlled specification parameter.
In sealed packaging, away from humidity and contaminants, at ambient temperature. Shelf life is typically 24 months under recommended storage conditions.
Get Technical Data & Custom Quote Today
Dried Aluminium Hydroxide Gel engineered for consistent reactivity, controlled morphology, and reliable purity. Our team provides fast responses with full documentation — no obligation.
- Technical datasheets (TDS) & Safety Data Sheets (SDS)
- Certificate of Analysis (COA) samples
- Competitive bulk pricing & volume quotes
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- OEM / custom manufacturing inquiries