ISO-LITH Powder 3AN and Paste 3AN are highly effective drying agents (moisture adsorbents) for plastics, coatings and paint systems. Three types with different active ingredient contents are available. ISO-LITH Powder 3AN or ISO-LITH Paste 3AN contain a zeolite mineral with a defined cavity structure (pore size 3 Å). Water molecules from the organic binders to be dried, selectively diffuse into the cavities of the syn-thetically produced material and are bound by adsorption. A typical application is the preparation of polyurethane formulations with ISO-LITH Paste or Powder. This reliably prevents the formation of carbon dioxide bubbles when the isocyanate hardener component is added. The product is RoHS compliant according to EU Directives 2011/65/EU (“RoHS”) and 2015/863/EU (“RoHS III”).