... paper 3,With four contry's words 4, In accordance to SGS ,ROSH,MSDS,and DMF ... Characteristic Silica gel is a high absorbent. Exposing in the air (RH 80%-90%, 25°C) ... relative. The character is a lot of holes in inner, the outside structure is the anomalistic graininess. ... The inner configuration makes many hiatus net, forming the effect of capillary absorbent and coagulating. ...