Phenol - C6H5OH

Phenol are highly corrosive and poisonous crystals. The lethal dose for a human is about 15 g but as small quantity as 1 g has caused deaths. 

Phenol is used in the production of colourants, explosives and detergents.

Properties

Molecular weight   94.11 g/mol

Solid phase   Melting point: 40.5 °C

Liquid phase   Boiling point: 187.1 °C