Aluminium Trihydrate Powder (ATH) | Aluminium Hydroxide | Flame Retardant Grade

Product Description

Aluminium Trihydrate Powder (ATH), also known as Aluminium Hydroxide, Aluminium Trihydroxide or Alumina Trihydrate, is a fine white inorganic mineral widely used as a flame-retardant additive, smoke suppressant and functional filler.

ATH is used in PVC, plastics, rubber, wire and cable compounds, FRP, composite materials, paints, coatings, adhesives and sealants. Its chemical formula is Al(OH)₃ and its CAS Number is 21645-51-2.

When heated, ATH undergoes endothermic thermal decomposition and releases water. This absorbs heat and can contribute to flame-retardant and smoke-suppression performance in suitable formulations.

Lexen Industries & Minerals supplies Aluminium Trihydrate Powder for industrial and commercial applications in different grades and particle sizes according to customer requirements.

Technical Specifications

*Typical values. Final specifications should be confirmed through the applicable grade-specific COA/TDS.

Applications

PVC & Plastics

• PVC compounds

• PVC profiles and sheets

• Flame-retardant plastics

• Polymer compounds

• Plastic filler applications

Wire & Cable

• PVC cable compounds

• Flame-retardant cable compounds

• Electrical insulation materials

• Low-smoke formulations

Rubber

• Flame-retardant rubber

• Industrial rubber products

• Rubber sheets and profiles

• Specialty rubber compounds

FRP & Composites

• Fiberglass reinforced plastics

• Composite materials

• Resin systems

• Solid-surface materials

Paints & Coatings

• Industrial coatings

• Flame-retardant coatings

• Protective coatings

• Specialty coatings

Adhesives & Sealants

Used in suitable formulations requiring flame-retardant and functional mineral filler properties.

Benefits

• Flame Retardant: Releases water during thermal decomposition and absorbs heat.

• Smoke Suppression: Can contribute to reduced smoke generation in suitable formulations.

• Halogen-Free: Inorganic, halogen-free flame-retardant material.

• High Whiteness: Suitable for applications requiring a white mineral filler.

• Functional Filler: Useful in plastics, rubber, composites and coatings.

• Particle Size Options: Available in grades suitable for different processing requirements.

• Wide Industrial Use: Suitable for plastics, PVC, cables, rubber, FRP and coatings.

Frequently Asked Questions

What is Aluminium Trihydrate Powder?

ATH is Aluminium Hydroxide, a fine white inorganic mineral used as a flame-retardant additive and functional filler.

What is ATH used for?

ATH is used in PVC, plastics, rubber, wire and cable, FRP, composites, paints, coatings, adhesives and sealants.

Is ATH a flame retardant?

Yes. ATH is widely used as an inorganic, halogen-free flame-retardant material in suitable formulations.

What happens when ATH is heated?

ATH undergoes endothermic decomposition and releases water, absorbing heat from the surrounding material.

What is the melting point of ATH?

ATH does not have a conventional melting point; it decomposes at approximately 200–300°C.

What is the boiling point of ATH?

A conventional boiling point is not applicable because ATH decomposes before boiling.

Is ATH soluble in water?

ATH is generally insoluble or practically insoluble in water.

What is the density of ATH?

The typical specific gravity is approximately 2.42 g/cm³, depending on grade.

Can ATH be used in PVC?

Yes. ATH can be used in suitable PVC and polymer formulations as a flame-retardant and functional filler.

Can ATH be used in wire and cable?

Yes. ATH is used in selected cable compounds requiring flame-retardant and smoke-suppression performance.

Can ATH replace Antimony Trioxide?

ATH and Antimony Trioxide have different properties and functions. Complete replacement should be evaluated through formulation trials and appropriate flame-performance testing.

Supplier: Lexen Industries & Minerals, India