"163.00LB DRUM;DESI PAK CLAY DESICCANT IS A CHEMICALLY INERT,NON-CORROSIVE, CALSIUM ALUMINOSILICATE CLAY;ABSORBS UP TO 28PERCENT OF ITS WEIGHT IN WATER VAPOR AT 77.0 DEG F AND 80PERCENT HUMIDITY;EXCEED REQUIREMENTS OF MIL-D-3464E IN ACTUAL PERFORMANCE AND WILL EXCEED THE MOISTURE VAPOR ADSORPTION OF SILICA GEL AT GOVERNMENT SPECIFICATION LEVELS."