A型硅膠又稱細(xì)孔硅膠，為透明、半透明顆粒。分為球形和塊狀兩類。主要成分為SiO2·nH2O，不溶于水和無機酸，溶于氫氟酸和濃苛性堿溶液。機械強度高，耐磨性好。其內(nèi)部結(jié)構(gòu)為孔容0.35-0.5ml/g，孔徑20-40?，比表面積≥600㎡/g。

Type A silica gel also known as Narrow pore silica gel, is transparent and translucent particles. It is divided into two types: spherical and block. The main component is SiO2·nH2O, insoluble in water and inorganic acid, soluble in hydrofluoric acid and concentrated caustic soda solution. High mechanical strength, good wear resistance. The pore volume is 0.35-0.5ml/g, pore size 20-40?, specific surface area ≥600㎡/g. 

本品是一種重要的吸附劑，適用于干燥各種工業(yè)氣體，如空氣、氧氣、氫氣和有機氣體，以及儀器儀表、電器、紡織品、食品、藥品、服裝、鞋帽、集裝箱及其它各種包裝物品防潮，有機產(chǎn)品脫水精制及空氣濕度調(diào)節(jié)等方面。從壓縮空氣中吸附乙炔等易燃易爆氣體。

The product is an important adsorbent, suitable for drying all kinds of industrial gases, such as air, oxygen, hydrogen and organic gases, as well as instruments, electrical appliances, textiles, food, medicine, clothing, shoes and hats, containers and other kinds of packaging items moisture-proof, organic products dewatering and refining and air humidity regulation. Adsorption of flammable and explosive gases such as acetylene from compressed air.