What Is Aluminum Hydroxide Powder?

What Is Aluminum Hydroxide Powder and why is it widely used? Aluminum hydroxide powder is an inorganic compound known for its flame retardant performance and safety.

Aluminum hydroxide powder is a common inorganic material used in many industries. It is also called Al(OH)3 powder. It looks like a white, fine powder. It is valued for flame retardant performance, stability, and low toxicity.

This guide explains what aluminum hydroxide powder is, how it works, where it is used, and how to choose a reliable supplier. It is written for engineers, buyers, and distributors.

BanlanChem is a professional Manufacturer, Supplier, and Factory of aluminum hydroxide powder. We support Wholesale supply for global customers.

For detailed product specifications, grades, and factory supply information, please visit our aluminum hydroxide powder product page .

Table of Contents

• Definition: What Is Aluminum Hydroxide Powder?
• Chemical Formula and Basic Information
• Key Properties of Aluminum Hydroxide Powder
• How Aluminum Hydroxide Powder Works as a Flame Retardant
• Main Applications of Aluminum Hydroxide Powder
• Grades and Specifications
• Production Process Overview
• Handling, Storage, and Packaging
• How to Choose a Reliable Manufacturer and Supplier
• FAQ

Definition: What Is Aluminum Hydroxide Powder?

Aluminum hydroxide powder is a hydroxide of aluminum. Its chemical name is aluminum trihydroxide. Many buyers also call it ATH powder.

Aluminum hydroxide powder is often used as a flame retardant filler. It is also used as a functional filler in plastics, rubber, wire and cable, and building materials.

The key reason is simple. When heated, aluminum hydroxide powder releases water vapor. This helps reduce heat and slow down fire spread.

Chemical Formula and Basic Information

The chemical formula of aluminum hydroxide powder is Al(OH)3. It contains aluminum, oxygen, and hydrogen.

• Appearance: white powder
• Typical function: flame retardant filler
• Other names: aluminum trihydrate, ATH powder

In industrial markets, aluminum hydroxide powder is selected by purity, particle size, and surface treatment.

Key Properties of Aluminum Hydroxide Powder

A good aluminum hydroxide powder should be stable and easy to use in formulations. Here are the key properties buyers care about.

• High purity: helps improve product stability and performance
• Fine particle size: supports better dispersion
• High whiteness: improves final product appearance
• Low moisture: reduces processing problems
• Low toxicity: safer for many applications
• Electrical insulation: useful in cable and electronics

Because of these properties, aluminum hydroxide powder is widely used as a halogen-free flame retardant option.

How Aluminum Hydroxide Powder Works as a Flame Retardant

Aluminum hydroxide powder is a physical flame retardant. It works mainly through heat absorption and water release.

When temperature rises, aluminum hydroxide powder decomposes. It releases water vapor and absorbs heat. This helps cool the surface.

At the same time, the released water vapor dilutes flammable gases. This can reduce smoke and slow down burning.

Key effects include:

• Absorbs heat and reduces surface temperature
• Releases water vapor and dilutes combustible gases
• Helps form a protective residue layer
• Supports low smoke and low toxicity formulations

Because it is halogen-free, aluminum hydroxide powder is often used in applications with strict safety requirements.

The flame retardant behavior of aluminum hydroxide powder is often discussed together with other halogen-free solutions. A detailed explanation can be found in this article: How Aluminum Hydroxide Works as a Flame Retardant

Main Applications of Aluminum Hydroxide Powder

Aluminum hydroxide powder is used in many industries. Below are the most common applications.

1) Plastics and Polymer Compounds

Aluminum hydroxide powder is used in PVC, PE, PP, and other polymer systems. It improves flame resistance and helps reduce smoke.

2) Wire and Cable

Cable insulation and sheathing often require halogen-free flame retardant fillers. Aluminum hydroxide powder helps meet safety standards.

For plastic compounds and cable materials with strict fire standards, a dedicated aluminum hydroxide flame retardant grade is often used to achieve better dispersion and stable fire performance.

3) Rubber

In rubber, aluminum hydroxide powder can improve flame resistance and stability. It is often used in industrial rubber products.

4) Building Materials

It is used in panels, coatings, and construction materials. It supports fire safety and improves thermal performance.

5) Other Industrial Uses

It can also be used as a filler and functional additive in chemical processing.

In high-temperature or ceramic-related applications, aluminum hydroxide powder may be further processed into aluminum oxide materials. For such uses, some customers also choose alumina powder with controlled purity and particle size.

Grades and Specifications

Different applications need different grades of aluminum hydroxide powder. Choosing the correct grade can improve processing and performance.

Common grade types include:

• Standard grade: for general flame retardant use
• Fine particle grade: for better dispersion and smoother surfaces
• Low sodium grade: for higher-end formulations
• Surface-treated grade: for improved polymer compatibility

Key specification items often include:

• Al(OH)3 content (purity)
• Particle size distribution
• Whiteness
• Moisture
• Oil absorption (for some applications)

After controlled calcination, aluminum-based materials show higher hardness and thermal stability. In these cases, calcined alumina is often selected for refractory and polishing applications.

Production Process Overview

Aluminum hydroxide powder is typically produced through a precipitation process. The process uses high-purity sodium aluminate solution.

The main steps include:

• Precipitation and controlled crystal growth
• Filtration and washing
• Drying and milling
• Particle size classification
• Quality inspection and packaging

A stable factory process helps keep each batch consistent. This is important for global customers who need repeatable results.

Handling, Storage, and Packaging

Aluminum hydroxide powder is stable, but good handling is still important. Use clean tools and keep moisture away.

• Store in a dry and ventilated place
• Keep the bag closed after opening
• Avoid contamination from other powders

Common packaging options include:

• 25 kg bags (often kraft paper or woven bags with inner liner)
• Big bags for bulk users
• Pallet loading for export shipments

Wholesale buyers often request custom labels and pallet plans. A professional supplier can support these needs.

How to Choose a Reliable Manufacturer and Supplier

Not all aluminum hydroxide powder suppliers are the same. Stable quality matters more than low price.

When choosing a Manufacturer, Supplier, or Factory, consider:

• Can they provide stable batch quality?
• Do they control particle size and purity?
• Do they offer grades for different applications?
• Can they support wholesale export packaging?
• Do they provide technical support for formulations?

At BanlanChem, we provide aluminum hydroxide powder with consistent quality for long-term cooperation. We support wholesale supply and international delivery plans.

When selecting aluminum hydroxide powder for industrial use, supplier reliability is an important factor. You may also read our guide How to Choose a Reliable Aluminum Hydroxide Powder Supplier for practical evaluation tips.

FAQ

Is aluminum hydroxide powder the same as ATH powder?

Yes. ATH powder is a common market name for aluminum hydroxide powder.

Is aluminum hydroxide powder environmentally friendly?

It is widely used as a halogen-free flame retardant filler. It does not release toxic halogen gases during use.

What industries use aluminum hydroxide powder the most?

Plastics, wire and cable, rubber, and building materials are common industries.

Do you provide wholesale supply?

Yes. We provide wholesale aluminum hydroxide powder as a manufacturer and factory supplier.

In some applications, aluminum hydroxide powder is often compared with alumina materials. For a clear comparison between the two, you can read What Is the Difference Between Alumina Powder and Aluminum Hydroxide .

If you are looking for a reliable aluminum hydroxide powder supplier and factory partner, please visit BanlanChem for product details and support.