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Honeywell UOP Molecular Sieve Type 4A Powder 58 Gallon Drum With 90 kg Total Weight Capacity (Non-Returnable)
Airgas Part #: ADQ4APOW-90
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Honeywell UOP Molecular Sieve Type 4A Powder 58 Gallon Drum With 90 kg Total Weight Capacity (Non-Returnable)
By
ADVANCED SPECIALTY GAS EQUIPMENT
Airgas Part #:ADQ4APOW-90
Manufacturer Part #:4APOW-90
$NA.NA/NA
Item Details
Honeywell UOP Molecular Sieves* are synthetically produced, crystalline metal aluminosilicates that have been activated for adsorption by removing their water of hydration. Unlike other adsorbents, Molecular Sieves have a precise uniform size and molecular dimension. 4A-AP Molecular Sieve activated powder adsorbent is the sodium form of the Type A crystal structure. An alkali metal aluminosilicate, 4A-AP adsorbs molecules with critical diameters up to 4 Angstrom. *Airgas repackages and markets Molecular Sieves manufactured by Honeywell UOP. This product is a 90 kg drum of 4A Powder that is non returnable
Features
Nominal Pore Diameter (angstroms) - 4
Particle Size (microns) - <10
Bulk Density (lb/ft³) - 32
Equilibrium H2O Capacity* - 27
Moisture Content (wt.-%) - 1.5
* Measured at 17.5 mm Hg and 25°C
Applications
4A molecular sieve powder is used in many urethane formulations and metal-rich paints/coatings are extremely susceptible to moisture contamination during production and storage.
For urethane-based coating, adhesive, sealant, and elastomer formulations, water will react with isocyanate, which may cause product curing problems, carbon dioxide off-gassing, blistering, and degradation of other physical properties.
For zinc or aluminum paints/coatings, water in the presence of reactive metal dust can react to generate hydrogen, greatly reducing product shelf life.
4A-AP molecular sieve powder is a superior water scavenger in these and many other moisture-sensitive applications.
