What are the differences between micro powders, silica gel and silica?
Micro silica gel in English, Colloidal, Silicon, Dioxide silica, English Silicon Dioxide. In reading foreign drug instructions, most of the time using Silicon Dioxide, but does not represent the use of precipitation is really prepared by silica, it may also be micro silica gel.
In the pharmaceutical industry, most of the time, micro powder, silica gel and silica refer to the same thing, which can be interchanged most of the time in practical applications. According to the different preparation process can be divided into gas phase silica (colloidal silica) and silica, silica powder is fumed silica (colloidal silica) refers to the use of gas phase method prepared silica powder; silica is prepared by precipitation of silica gel (actually very fine).
In industry, silica can be found in many forms, such as silica gel column filling materials, relatively large size of the preparation industry.
