Aluminium silicate

Aluminium silicate (or aluminum silicate) is a name commonly applied to chemical compounds which are derived from aluminium oxide, Al₂O₃, and silicon dioxide, SiO₂. These compounds may be anhydrous or hydrated, naturally occurring or synthetic, and range from fully amorphous (such as glass) to fully crystalline (such as quartz) and everything in between.

Chemical Structure

Aluminium silicate has a complex chemical structure. The basic unit of all silicate minerals is the silicon tetrahedron, in which one silicon atom is surrounded by and bonded to (i.e., coordinated with) four oxygen atoms, each at the corner of a regular tetrahedron. These tetrahedra can be linked together in a variety of ways, from single units to complex frameworks (as in feldspar and quartz).

Properties

Aluminium silicate has a high melting point and is resistant to thermal shock, making it useful in a variety of industrial applications. It is also chemically inert, meaning it does not react with most other substances. This makes it useful in applications where it will be exposed to harsh chemicals or extreme conditions.

Uses

Aluminium silicate is used in a wide range of applications. It is used in the manufacture of glass and ceramics, including porcelain. It is also used in the production of insulation materials and in the manufacture of refractories, which are materials that can withstand high temperatures. In addition, it is used as a filler in paint and plastic, and as a component of cement.

Health and Safety

While aluminium silicate is generally considered safe for use in many applications, it can pose health risks if inhaled. Long-term exposure to aluminium silicate dust can lead to the development of silicosis, a serious lung disease. Therefore, appropriate safety measures should be taken when handling this substance.

See Also

• Silicate minerals
• Aluminium oxide
• Silicon dioxide
• Feldspar
• Quartz