Aluminium Nitrate Hexahydrate

Aluminium nitrate hexahydrate is a chemical compound with the formula Al(NO3)3·6H2O. It is a white crystalline solid that is highly soluble in water and has a melting point of around 73°C.

The compound is made up of one aluminium ion (Al3+) and three nitrate ions (NO3-) which are held together by ionic bonds. The six water molecules surrounding the compound are called "water of crystallization" or "water of hydration", which are necessary for the crystal formation and stability of the compound.

Aluminium nitrate hexahydrate is commonly used in industries such as cosmetics, pharmaceuticals, and as a catalyst in chemical reactions. In cosmetics, it is used as an astringent and antiperspirant. In pharmaceuticals, it is used to control bleeding and as an antiseptic. As a catalyst in chemical reactions, it accelerates the rate of the reaction without being consumed itself.

However, aluminium nitrate hexahydrate can be hazardous if not handled properly. It is an oxidizing agent and can react violently with combustible materials, so it should be stored away from heat sources and incompatible chemicals. It can also cause skin and eye irritation upon contact, so protective clothing and equipment should be worn when handling it.