Active clay is made of clay (mainly bentonite) as raw material, through inorganic acidification treatment, and then through water rinsing and drying to produce organic matter. It is easy to absorb moisture in the air, and the adsorption performance will be reduced if placed for a long time. However, when heated to more than 300 degrees Celsius, the crystal water begins to lose, which changes the structure and affects the fading effect. Active clay is insoluble in water, organic solvents and various oils, almost completely soluble in hot caustic soda and hydrochloric acid, with a relative density of 2.3-2.5, and very little swelling in water and oil. Into the adsorbent, the appearance of milky white powder, odorless, tasteless, non-toxic, adsorption performance is very strong, can absorb colored substances,
