DampRid High-Capacity Moisture Absorber, 4 lb Net Content, Tub Container, Solid Form, Off-White/White, Compositions: Calcium Chloride, Sodium Chloride, Potassium Chloride, 2.15 Specific Gravity, 1000 sq-ft Coverage Area, 369 to 1420 deg F Melting Point, 350 to 3500 deg F Boiling Point, 15.4 lb/gal Density