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Activated zeolite powder 3A is calcined synthetic zeolitepower, after calcination, they lose most of moisture that theycontain, so they can be used as adsorbent or desiccant directly invarious application. It is mainly used to remove moisture from polyurethane polymersystems; it deals with moisture problems without causing undueproblems with shelf-life viscosity etc. Other types are used asadditives for selective adsorption in defined polymer system orcoating systems | Property | Unit | 3A-38 | 3A-45 | Note |
| Static H2O Adsorption | %wt | ≥25.5 | ≥25.5 | RH50%, 25 |
| Packing Moisture | %wt | ≤2.0 | ≤2.0 | 550, 2hr |
| Screen Residual | %wt | ≤1.0 | ≤1.0 | 325 Mesh |
| PH Value | ≤11 | ≤11 | 1% Solution | |
| Exchange Rate | %mol | ≥38 | ≥45 | Flame Photometer |
| CI- | ≤0.5 | ≤0.5 | Colorimetry |
