Flame Retardant Materials
Used as a halogen-free flame retardant in cables, plastics, rubber products, and construction materials to improve fire resistance and reduce smoke generation.
Aluminum Hydroxide Manufacturer & Supplier In China
- 30+ Years Manufacturing Experience
- 300,000 MT Annual Capacity
- 50+ Export Countries
- 200+ Global Customers
Why Aluminum Hydroxide Is Widely Used?
As a non-halogenated flame retardant, ATH decomposes endothermically at 200°C, releasing water vapor to cool the polymer matrix and dilute combustible gases without generating toxic emissions.
Flame Retardant
Absorbs heat during decomposition (1050 J/g), significantly reducing fire propagation risks in compounding applications.
Smoke Suppressant
Lowers smoke generation during combustion by promoting char formation, critical for LSZH cable formulations.
Non-Toxic
Environmentally friendly mineral additive. Releases only water vapor, avoiding corrosive halogenated acid gases.
High Whiteness
≥95% whiteness index makes it suitable for premium filler applications in solid surface and artificial stone.
Thermal Stability
Stable under industrial processing conditions up to 200°C, ideal for EVA, PE, and PVC extrusion processes.
Cost Effective
Excellent performance-to-cost ratio compared to specialized synthetic flame retardants, reducing overall masterbatch costs.
Aluminum Hydroxide Product Range
Selecting the correct particle size is critical for balancing flame retardancy and resin viscosity. We manufacture a complete range of ATH powders to meet specific compounding requirements.
Fine Aluminum Hydroxide Powder
D50: 3-5μm. Provides an excellent balance of dispersion and mechanical property retention. The standard choice for general compounding.
Primary Applications:
- Wire & Cable
- Plastic Compounds
- Flame Retardants
Ultra Fine ATH
D50: 1-2μm. Precipitated processing ensures maximum surface area for superior flame retardancy at lower loading levels.
Primary Applications:
- High-End Plastics
- Engineering Materials
- EVA Compounds
Industrial Grade ATH
D50: 10-50μm. Coarser particles designed for high-volume filler applications where flame retardancy and cost reduction are balanced.
Primary Applications:
- Rubber Mats/Belts
- Adhesives & Sealants
- Building Materials
Aluminum Hydroxide Technical Specifications
When compounders formulate flame retardant masterbatches, strict moisture control (≤0.3%) and precise Al₂O₃ content are mandatory to prevent extruder die build-up and ensure consistent mechanical properties. Our factory laboratory tests every batch prior to shipment.
| Item | Specification |
|---|---|
| Chemical Formula | Al(OH)₃ |
| Appearance | White Powder |
| Al₂O₃ Content | ≥64% |
| Whiteness | ≥95% |
| Moisture | ≤0.3% |
| pH Value | 8.0 - 10.0 |
| Particle Size (D50) | 1μm - 50μm (Customized) |
| Bulk Density | Customized based on application |
Aluminum Hydroxide Applications
Aluminum Hydroxide (ATH) is widely used in flame retardants, water treatment, industrial fillers, chemical manufacturing, pharmaceuticals, and advanced ceramics.
Water Treatment Chemicals
An important raw material for manufacturing Aluminum Sulphate and PAC used in municipal and industrial water treatment processes.
Artificial Stone Industry
Widely used as a functional filler in artificial stone, coatings, adhesives, sealants, and composite materials to improve performance and whiteness.
Aluminum Chemicals Production
Aluminum Hydroxide serves as a key intermediate for manufacturing various aluminum compounds.Such as Aluminum Sulphate.
Pharmaceutical Industry
High-purity aluminum hydroxide is used in antacid formulations and vaccine adjuvants in pharmaceutical applications.
Ceramics & Electronics
Used in the production of high-purity alumina for electronic ceramics, LED substrates, lithium battery materials, and refractory products.
Looking for a Reliable Aluminum Hydroxide Supplier?
Contact our technical team for specifications, samples, pricing, and customized solutions tailored to your production needs.
What Is Aluminum Hydroxide?
Aluminum Hydroxide (ATH) is a versatile inorganic compound widely used as a flame retardant, filler, and raw material for water treatment chemicals, aluminum salts, ceramics, and industrial applications.
- Chemical Formula: Al(OH)₃
- Also known as: Aluminium Trihydrate
- Primary Function: Flame Retardant & Smoke Suppressant
Product Specifications
Essential technical data and properties for our premium grade compound. Designed for high-performance industrial applications.
Quick Facts
- Formula
- Al(OH)3
- CAS
- 21645-51-2
- Molecular Weight
- 78
- Appearance
- White Powder
- Application
- Flame Retardant
Aluminum Hydroxide VS Magnesium Hydroxide
When formulating non-halogenated flame retardants, purchasing managers often compare ATH and MDH. The primary constraint is the processing temperature of the base polymer.
ATH decomposes at approximately 200°C, making it the superior, cost-effective choice for polymers processed below this temperature (like EVA, PE, PVC). If your extrusion temperature exceeds 200°C (e.g., PP, PA), Magnesium Hydroxide (which decomposes at 330°C) may be required despite its higher cost.
| Feature | Aluminum Hydroxide (ATH) | Magnesium Hydroxide (MDH) |
|---|---|---|
| Decomposition Temp. | ~200°C (Lower) | ~330°C (Higher) |
| Flame Retardancy | Excellent | Excellent |
| Raw Material Cost | Lower (Cost Effective) | Higher |
| Polymer Compatibility | EVA, PE, PVC, Rubber | PP, PA, ABS |
| Market Usage | Widely Used (Dominant) | Specialized High-Temp |
How To Choose Aluminum Hydroxide（ATH）?
Avoid compounding failures by selecting the correct grade. Follow this 4-step B2B procurement guide to ensure formulation success.
1
Identify Application
Determine the base polymer (EVA, PVC, Rubber) and processing temperature. Ensure extrusion temps stay strictly below 200°C.
2
Choose Particle Size
Finer D50 (1-3μm) improves flame retardancy but increases viscosity. Coarser D50 (10-50μm) allows higher filler loading for cost reduction.
3
Evaluate Whiteness
For artificial stone or color-sensitive plastics, demand ≥95% whiteness. For black rubber belts, industrial grades are sufficient.
4
Verify Supplier
Request sample testing for moisture content (≤0.3%) and verify mass production stability to avoid batch variations.
Production Process & Quality Assurance
Our advanced milling and classification technology ensures precise particle control. From bauxite processing to final packaging, every step is monitored to prevent agglomeration in your masterbatch.
1
Raw Materials
2
Fine Grinding
3
Classification
4
QC Inspection
5
Packaging
6
Global Shipment
Production Workshop
Warehouse
Packing bag
Container Loading
Trusted By Customers Worldwide
With over 30 years of manufacturing excellence, Weifang Changs Chemical Industry Co., Ltd. has established a robust global logistics network. We guarantee stable supply chains for continuous compound manufacturing operations.
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✓Exported to 50+ Countries
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✓Stable Supply Capacity (300,000 MT/Year)
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✓OEM Services & Custom Formulations
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✓Fast Delivery & Logistics Support
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✓Dedicated Technical Support Team
Why Choose Changs Chemical?
As a direct aluminum hydroxide manufacturer, we provide factory-direct pricing, guaranteed batch-to-batch consistency, and robust supply chain security for high-volume industrial buyers.
30+
Years Experience
300k
MT Annual Capacity
50+
Export Countries
200+
Global Customers
OEM
Packaging Ready
Frequently Asked Questions
Technical and procurement answers for B2B buyers.
What is aluminum hydroxide used for?
It is primarily used as a halogen-free flame retardant and smoke suppressant in wire and cable compounds, rubber belts, plastic masterbatches, and EVA foams. It is also a critical filler in artificial marble and solid surface manufacturing due to its high whiteness.
Why is ATH used as a flame retardant?
ATH works through an endothermic reaction. When the material temperature reaches ~200°C, ATH absorbs heat and releases water vapor (constituting about 34.6% of its weight). This cools the polymer, dilutes oxygen and combustible gases, and forms a protective aluminum oxide char layer, effectively stopping the fire without toxic smoke.
What is the difference between ATH and magnesium hydroxide?
The main difference is the decomposition temperature. ATH decomposes at ~200°C, making it suitable for polymers processed at lower temperatures (EVA, PE). Magnesium Hydroxide (MDH) decomposes at ~330°C, making it necessary for high-temperature processed plastics like PP or PA, though it is generally more expensive.
What particle sizes are available?
We manufacture a wide range of D50 particle sizes, from ultra-fine precipitated grades (1-2μm) for high-end plastics, to fine ground grades (3-5μm) for cables, up to industrial grades (10-50μm) for rubber and construction materials. Custom milling is available.
Can you provide customized packaging?
Yes. Standard packaging includes 25kg paper-plastic composite bags and 1000kg/1200kg jumbo bulk bags for automated feeding systems. We offer OEM printing and specialized moisture-barrier packaging upon request.
What is the HS code for Aluminum Hydroxide (ATH)?
The standard Harmonized System (HS) code for Aluminum Hydroxide is 28183000. Please note that customs classifications may vary slightly depending on your specific region and the product's intended application.
What is the CAS number for Aluminum Hydroxide (ATH)?
The Chemical Abstracts Service (CAS) registry number for Aluminum Hydroxide is 21645-51-2. We can provide full Safety Data Sheets (SDS) and Technical Data Sheets (TDS) featuring this information upon request.
Related Chemical Raw Materials
Often purchased together for flame retardants, water treatment, industrial fillers.
Looking For A Reliable Aluminum Hydroxide Supplier?
Get Samples, COA, TDS, Technical Support And Competitive Factory Pricing Directly From Manufacturer.
Email Us
info@changschem.com
Call / WhatsApp
+86 186 6063 0765
Factory Address
WEIFANG CITY, SHANDONG PROVINCE, CHINA
