Aluminum hydroxide, 99.5%, analytical grade

Product Introduction

Aluminum Hydroxide is a white inorganic hydroxide material with an amphoteric chemical nature. It can react with both acids and strong bases, forming aluminum salts or aluminate species under different conditions.

The material is commonly investigated as:

• Aluminum oxide precursor
• Flame-retardant filler
• Catalyst support material
• Adsorbent
• Inorganic functional additive
• Ceramic material component
• Polymer composite filler

Aluminum Hydroxide has a molecular formula of Al(OH)₃, molecular weight of 78.00 g/mol, and is generally supplied as a white powder or gel-like material.

Mechanism / Principle

The functional properties of Aluminum Hydroxide mainly originate from its amphoteric hydroxide structure and thermal conversion behavior.

• Amphoteric reaction capability

  Aluminum Hydroxide can react with acids and bases, allowing its use in neutralization systems and aluminum compound synthesis.

• Thermal decomposition

  Upon heating, Aluminum Hydroxide releases water and transforms into aluminum oxide (Al₂O₃), making it useful as an alumina precursor.

• Flame-retardant mechanism

  During thermal decomposition, released water absorbs heat and dilutes combustible gases, contributing to flame-retardant performance in polymer systems.

• Surface adsorption

  The hydroxyl-rich surface provides adsorption sites for ions, molecules, and catalysts.

• Material reinforcement

  Aluminum Hydroxide particles can improve thermal stability and functional properties of polymer composites.

Key Research Applications

1. Dental Materials

Aluminum Hydroxide can be investigated in dental-material systems due to its inorganic filler properties, adsorption capability, and compatibility with mineral-based formulations.

Potential applications include:

• Dental composite filler research
• Dental cement formulation studies
• Calcium-aluminum based dental materials
• Mineral-based dental formulations
• Inorganic additives for dental materials

2. Polymer Materials & Flame-Retardant Applications

Aluminum Hydroxide is one of the most widely studied inorganic flame-retardant fillers.

Applications include:

• Polymer flame retardant systems
• Plastic composite materials
• Rubber modification
• Cable insulation materials
• Thermal-resistant polymer formulations

Its endothermic dehydration process contributes to improved fire resistance in polymer materials.

3. Catalyst Supports & Chemical Processing

Aluminum Hydroxide is an important precursor for preparing alumina-based catalyst materials.

Applications include:

• Catalyst carrier preparation
• Petroleum catalyst supports
• Heterogeneous catalyst development
• Adsorption materials
• Surface-active inorganic materials

4. Pharmaceutical & Biomedical Research

Aluminum Hydroxide is widely studied in pharmaceutical and biomedical-related applications.

Applications include:

• Pharmaceutical excipient research
• Antacid formulation studies
• Adsorbent materials
• Vaccine adjuvant research
• Biomedical inorganic materials

5. Ceramic & Functional Materials

Aluminum Hydroxide serves as a precursor for aluminum oxide and ceramic materials.

Applications include:

• Alumina preparation
• Ceramic materials
• Glass additives
• Advanced inorganic composites
• Functional coatings

Advantages

• Excellent thermal decomposition characteristics for flame-retardant research.
• High aluminum content suitable for alumina precursor applications.
• Amphoteric chemical behavior enabling versatile reactions.
• Good adsorption capability due to hydroxyl-rich surfaces.
• Wide compatibility with polymer, ceramic, catalyst, and inorganic systems.
• Important precursor material for aluminum oxide and advanced materials.

Storage & Handling

• Store in a tightly closed container.
• Keep in a cool, dry, and well-ventilated environment.
• Protect from moisture.
• Avoid contact with strong acids and strong bases.
• Minimize dust generation during handling.
• Use appropriate laboratory protective equipment.

Recommended storage condition: dry place at controlled temperature, typically 5–30 °C.

Research Areas

• Dental Materials – Mineral-based dental formulations, dental composite fillers, and inorganic dental additives.
• Polymer Materials – Flame-retardant polymers, composite fillers, and thermal-resistant materials.
• Catalysis – Alumina catalyst supports and inorganic catalyst preparation.
• Pharmaceutical Research – Pharmaceutical excipient studies and adsorption-based materials.
• Biomedical Materials – Aluminum-containing biomaterial research and formulation systems.
• Ceramic Materials – Alumina ceramics and advanced inorganic materials.
• Coatings & Surface Engineering – Functional coatings and surface modification.
• Nanomaterials – Aluminum oxide nanoparticles and inorganic nanocomposites.

Q1. What is Aluminum Hydroxide?
Aluminum Hydroxide is an inorganic aluminum compound with the formula Al(OH)₃ and is widely used as a functional inorganic material.

Q2. What are the main applications of Aluminum Hydroxide?
Applications include flame-retardant materials, catalyst supports, ceramics, pharmaceutical research, dental materials, and functional inorganic materials.

Q3. Can Aluminum Hydroxide be used in dental materials?
Yes. Aluminum Hydroxide can be investigated as an inorganic filler or additive in mineral-based dental material systems.

Q4. Is Aluminum Hydroxide soluble in water?
Aluminum Hydroxide is practically insoluble in water but can dissolve in strong acids and strong alkaline solutions.

Q5. What happens when Aluminum Hydroxide is heated?
It decomposes into aluminum oxide and releases water, making it useful in thermal and flame-retardant applications.

Q6. Is Aluminum Hydroxide used as a catalyst support?
Yes. It is commonly used as a precursor for alumina-based catalyst supports.

Q7. How should Aluminum Hydroxide be stored?
Store sealed in a dry environment and protect from moisture.