Talc is an aqueous layered silicate mineral with the chemical formula 3MgO•4SiO2•H2O. The weak alkaline pH is 9.0-9.5, with good chemical stability, low hardness, lipophilic and hydrophobic properties, and is a rare functional filler in Chemicalbook. It can be widely used in papermaking, plastics, paints, ceramics, cosmetics, medicine, rubber, agricultural products, fertilizers and other industries. Especially in the plastic modification industry, it can greatly reduce the cost of products and improve the impact toughness of plastics.