Molecular Sieve Activated Powder 4A
General-purpose zeolite powder for adhesives and desiccant panels
Fine 4A powder providing moisture control in plastics, adhesives and desiccant sheeting.
Product Overview
Molecular sieve activated powder 4A is the most widely used zeolite powder for moisture control in non-food packaging, adhesives, plastics and building materials. Its 4Å pores adsorb water and small gases, protecting hygroscopic formulations from degradation during storage, cure and service.
Supplied as a dry, free-flowing powder with a tight particle-size distribution, it disperses evenly through extrusion and coating processes and delivers rapid, high-capacity moisture pickup.
Key Features
- High water capacity in fine-powder form
- Disperses evenly in extrusion and coating
- Protects hygroscopic formulations in storage
- Stable across wide processing temperatures
- Free-flowing, low-dust handling
Technical Specifications
| Pore diameter | 4Å |
|---|---|
| Particle size | D50 ≤ 4 μm |
| Water adsorption | ≥ 21% (RH 60%) |
| Bulk density | 0.5-0.7 g/cm³ |
| Residual moisture | ≤ 1.0% |
Applications
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