Fine-pore silica gel is transparent or semi-transparent granulesType A silica gel, also known as fine-pore silica gel,is transparent or semi-transparent granules. It is divided into two types: spherical and lumpy. Its main component isSiO₂·nH₂O, which is insoluble in water and inorganic acids but soluble in strong acid and strong alkali solutions. It has high mechanical strength and good wear resistance. Its internal structure has a pore volume of0.35-0.45 ml/g, a pore diameter of20-30 ?, and a specific surface area of ≥600 m²/g. It is suitable for drying, moisture-proofing, and rust prevention, and can prevent instruments, meters, military equipment, electrical devices, food, textiles, and other packaged items from getting damp. It can also be used as a catalyst carrier and for the dehydration and purification of organic compounds. Due to its high bulk density and significant moisture absorption effect under low humidity conditions, it can be used as an air purifier to control air humidity. It is also widely used in maritime transport, as goods often become damp and deteriorate due to high humidity during transportation. Fine-pore silica gel can effectively remove moisture and prevent dampness, ensuring the quality of the goods. Fine-pore silica gel is also commonly used for dehumidification between two parallel sealed window panes, maintaining the transparency of the double-glazed glass.