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Description
Aluminum Hydroxide (Al(OH)3) Micron Powder Purity: 99.5+% | Particle Size: 2–4 micron
Aluminum Hydroxide Micron Powder (Al(OH)₃), with a high purity level of 99.5+% and a controlled particle size of 2–4 microns, is a versatile inorganic material widely used in industrial applications. With a gibbsite crystal structure, this product functions both as an inert filler and as a non-toxic, endothermic flame retardant and smoke suppressant.
When exposed to heat, aluminum hydroxide releases water vapor, reducing surface temperature and suppressing smoke formation during combustion. These properties make it particularly suitable for polymer and composite systems where fire safety and environmental compatibility are critical. Its high whiteness, low impurity content, and good dispersibility contribute to consistent performance and enhanced aesthetic quality in finished products.
Technical Properties
Chemical Composition (Typical Values)
| Component | Content (% by weight) | CAS No. |
|---|---|---|
| Al(OH)₃ | > 99.5 | 21645-51-2 |
| SiO₂ | < 0.01 | 7631-86-9 |
| Fe₂O₃ | < 0.01 | 1309-37-1 |
| Na₂O | < 0.20 | 1313-59-3 |
| Moisture (20–105 °C) | < 0.5 | — |
Physical Properties
Chemical Structure: Gibbsite
Loss on Ignition (250–1000 °C): 35%
Specific Gravity: 2.4 g/cm³
Refractive Index: 1.59
Whiteness: > 92%
Particle Size & Surface Characteristics
D50 (µm): 2.0 – 4.0
Bulk Density: 410 kg/m³
Oil Absorption: 28 cm³ / 100 g
Specific Surface Area (BET): 13 m²/g
Applications
Plastics & Polymer Industry
Thermoplastics and thermoset composites
PVC, polyolefins, and engineering plastics
Flame-retardant and smoke-suppressant additive systems
Rubber & Elastomer Systems
Elastomer compounds requiring enhanced fire resistance
Wire and cable insulation materials
Electrical & Cable Industry
Cross-linked wire and cable compounds
Insulation and protective sheath formulations
Coatings, Adhesives & Sealants
Surface coatings
Adhesives and sealants
Potting compounds and cast polymer systems
Paper & Filler Applications
Paper coatings and fillers
Whiteness and opacity enhancement
Chemical, Catalyst & Specialty Applications
Catalyst supports
Dental and specialty technical formulations
R&D and advanced material development
Performance Benefits
Non-toxic and environmentally friendly flame-retardant solution
Endothermic action providing effective heat absorption and smoke suppression
High whiteness with very low impurity levels
Controlled particle size for good dispersion and processability
Broad compatibility across polymer, coating, and composite systems
Additional information
| Gram | 100 g, 500 g, 1000 g, 5000 g |
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