para-nitrotoluene (PNT), p-nitrotoluene, or 4-nitrotoluene. It is a pale yellow material forming rhombic crystals and has a somewhat pleasant, characteristic smell of bitter almonds. It is almost insoluble in water.
Typical use of nitrotoluene is in production of pigments, antioxidants, agricultural chemicals, and photographic chemicals.
Ortho-mononitrotoluene and para-mononitrotoluene can be also used as detection taggants for explosive detection.