Aluminium Hydroxide (Al(OH)₃) is a versatile inorganic compound widely used in flame-retardant formulations, plastics, rubber, cables, electrical insulation, paints, coatings, ceramics, glass, water treatment, and aluminium chemical manufacturing. It is generally supplied as a fine white powder and is valued for its thermal decomposition, flame-retardant properties, low smoke generation, and chemical stability.
As a reliable Aluminium Hydroxide manufacturer and supplier in India, we supply aluminium hydroxide powder in different grades and particle-size specifications for industrial applications and bulk export.
General Specification
| Parameter | Specification | Result |
|---|---|---|
| Appearance | White fine powder | White fine powder |
| Aluminium Hydroxide [Al(OH)₃] | NLT 99.0% | 99.20% |
| Aluminium Oxide (Al₂O₃) | 64.5 – 65.5% | 65.10% |
| Moisture | NMT 0.5% | 0.25% |
| Iron (Fe) | NMT 0.05% | 0.02% |
| Silicon Dioxide (SiO₂) | NMT 0.05% | 0.02% |
| Sodium Oxide (Na₂O) | NMT 0.40% | 0.18% |
| Loss on Ignition | 34.0 – 36.5% | 34.80% |
| pH (10% slurry) | 7.0 – 9.0 | 8.10 |
| Particle Size | As per grade | As specified |
Specifications can vary according to grade, particle size, surface treatment and application. Batch-specific COA and detailed technical specifications are available on request. For more detailed specification and technical data please Contact Us.
Technical Specification
| Parameter | Details |
|---|---|
| Product Name | Aluminium Hydroxide |
| Other Names | Aluminium Hydroxide Powder, Hydrated Alumina, Alumina Trihydrate, ATH |
| Chemical Formula | Al(OH)₃ |
| Molecular Weight | 78.00 g/mol |
| CAS Number | 21645-51-2 |
| HS Code | 28183000 |
| Appearance | White fine powder |
| Odor | Odorless |
| Solubility | Practically insoluble in water |
| Nature | Inorganic hydroxide |
Available Grades
We manufacture and supply:
- Industrial Grade Aluminium Hydroxide
- Flame Retardant Grade Aluminium Hydroxide
- Aluminium Hydroxide for Plastics & Rubber
- Aluminium Hydroxide for Water Treatment
Applications
Flame Retardant Industry
Aluminium hydroxide is widely used as a halogen-free flame retardant and smoke suppressant in:
- Plastics
- Rubber
- Cable compounds
- Electrical insulation
- Polymer formulations
When heated, aluminium hydroxide releases water and absorbs heat, helping reduce flame propagation and smoke generation.
Cable & Electrical Industry
Used in:
- Low-smoke cable compounds
- Electrical insulation
- Wire & cable sheathing
- Flame-retardant polymer systems
Plastics & Rubber Industry
Used as a functional mineral filler in:
- PVC compounds
- Thermoset plastics
- Rubber products
- Polymer composites
- Injection-moulded products
Paints & Coatings
Used as:
- Functional filler
- Flame-retardant additive
- Smoke-suppressing component
- Mineral extender
Water Treatment
Aluminium hydroxide is used in certain water-treatment and chemical-processing applications as a raw material for aluminium-based compounds.
Aluminium Chemical Manufacturing
Used as a raw material for producing:
- Aluminium oxide
- Aluminium salts
- Aluminium chemicals
- Specialty alumina products
Ceramics & Glass
Used as an alumina-containing raw material in selected:
- Ceramic formulations
- Glass compositions
- Refractory applications
Advantages
- Effective halogen-free flame-retardant material
- Releases water when heated
- Helps reduce smoke generation
- High aluminium content
- Good thermal stability under normal processing conditions
- Low toxicity compared with many halogenated flame retardants
- Suitable for plastics, rubber and cable formulations
Packaging Details
Available in:
- 25 kg HDPE bags with inner liner
- 25 kg paper bags with suitable inner liner
- 500 kg / 1000 kg jumbo bags
- Customized export packaging available
Packaging can be selected according to product grade, quantity and destination requirements.
Storage Conditions
- Store in a cool, dry and well-ventilated area.
- Protect from moisture and contamination.
- Avoid unnecessary exposure to humid conditions.
Handling Precautions
- Avoid inhalation of fine powder.
- Use appropriate respiratory protection where dust may be generated.
- Wear suitable gloves and protective eyewear.
- Avoid prolonged contact with eyes and skin.
- Maintain adequate ventilation during handling.
Why Choose Us
- Reliable Aluminium Hydroxide supplier in India
- Bulk supply capability
- Multiple grades and particle-size options
- Competitive bulk pricing
- COA, MSDS/SDS and TDS available
- Global shipping support
FAQs
What is Aluminium Hydroxide used for?
Aluminium Hydroxide is widely used in flame-retardant plastics, rubber, cables, electrical insulation, paints, coatings, ceramics, water treatment and aluminium chemical manufacturing.
What is the CAS number of Aluminium Hydroxide?
The CAS number of Aluminium Hydroxide is 21645-51-2.
What is the chemical formula of Aluminium Hydroxide?
The chemical formula of Aluminium Hydroxide is Al(OH)₃, with a molecular weight of 78.00 g/mol.
What is Aluminium Hydroxide powder also called?
Aluminium Hydroxide is also commonly known as Alumina Trihydrate (ATH), Hydrated Alumina and Aluminium Hydroxide Powder.
Why is Aluminium Hydroxide used as a flame retardant?
When heated, aluminium hydroxide undergoes an endothermic decomposition and releases water. This absorbs heat and can help reduce flame propagation and smoke generation in suitable polymer formulations.
Is Aluminium Hydroxide suitable for plastics and rubber?
Yes. Aluminium Hydroxide is widely used as a flame-retardant filler in plastics, rubber, PVC, cable compounds and polymer formulations.
What grades of Aluminium Hydroxide are available?
Common options include industrial grade, high-purity grade, flame-retardant grade, fine-particle grade and surface-treated aluminium hydroxide.
What particle sizes of Aluminium Hydroxide are available?
Particle size can vary according to the intended application. Fine and standard particle-size grades can be supplied, with customized specifications available for specific polymer and flame-retardant formulations.
Is Aluminium Hydroxide soluble in water?
Aluminium Hydroxide is practically insoluble in water.
Can Aluminium Hydroxide be supplied in bulk?
Yes. Aluminium Hydroxide can be supplied in 25 kg bags and jumbo bags, with bulk quantities available for industrial and export requirements.
Do you provide COA and MSDS for Aluminium Hydroxide?
Yes, batch-specific COA and MSDS/SDS, along with technical documentation, can be provided for supplied material.
What industries use Aluminium Hydroxide?
Major applications include flame-retardant plastics, rubber, cables, electrical products, paints and coatings, ceramics, glass, water treatment and aluminium chemical manufacturing.
