Radiation chemistry is a branch of nuclear chemistry that studies the chemical effects of radiation on matter. It differs from radiochemistry in that the substance being chemically modified by the radiation does not need to contain radioactivity
Petroleum Chemistry, which was founded in 1961, publishes original articles as well as reviews of theoretical and experimental studies on topics such as the chemical composition of crude oils and natural gas liquids, petroleum refining (cracking, hydrocracking, and catalytic reforming), and catalysts for petrochemical processes
Clinical chemistry (also referred to as chemical pathology, clinical biochemistry, or medical biochemistry) is a branch of chemistry that deals with the study of bodily fluids for diagnostic and therapeutic purposes.
The application of chemistry and its subfield, forensic toxicology, in a legal setting is known as forensic chemistry. Unknown items discovered at a crime scene can be detected with the aid of a forensic chemist.