Molecular formula :
nature : a diameter of 2 ~ 0.001 µ m of soil particles can be commonly known as the mineral, mineral soil colloids (inorganic colloid), mainly secondary clay minerals. It is also an organic, or soil organic colloid, mainly polysaccharides, proteins and humus. Most cases of organo-mineral complexes, the core part of the clay minerals, organic outside laminate was adsorbed on the surface of colloidal mineral. Its features are : (a) its considerable surface area (1g colloidal about 200 to 300m2), with considerable activity and the reaction adsorption; (2) Charge and has a strong ion exchange; (3) It is soil material and the most active part, thus the nature of the soil are also the most affected.
Notice:Each item can have many explanations from different angels. If you want grasp the item comprehensively,please see below "more details data".