During the reaction of magnesium sulfate and sodium bicarbonate, at first, the magnesium hydrate colloidal sediment particles have strong adsorption capacity. It can adsorb the ion in the amboceptor. With the temperature increasing, the magnesium hydrate and magneisum carbonate start to appear in the system of magnesium carbonate and sodium bicarbonate. After increasing to a certain temperature, the reaction system becomes thick, the mobility becomes poor with it.
At the moment, a large number of hydrone hydrate with magnesium carbonate and magnesium hydroxide sediment, it forms ropy reaction system. This reaction takes place on the surface of carbon dioxide gas which decomposed from sodium bicarbonate. And the sediment wraps the carbon dioxide bubbles. Therefore, it forms basic magnesium carbonate solidity with net structure. And the basic magnesium carbonate is light and loose.