N-Chlorosuccinimide is a convenient reagent for the electrophilic substitution and addition of chlorine to organic compounds.

Nitrobenzene is an organic compound with an odor of bitter almonds, prepared by nitration of benzene. In chemical industry nitrobenzene is mainly used to produce aniline. It is also used in the synthesis of other organic compounds, including acetaminophen. Nitrobenzene is very toxic and can cause acute poisoning because it is readily absorbed via the skin or respiratory tract. The primary effects are lowering of the hemoglobin level, methemoglobinemia, cyanosis, and breathlessness. Chronic exposure can lead to spleen and liver damage, jaundice, and anemia. Ingestion of alcohol may speed up and exaggerate the effects.

Carbon tetrachloride, also called tetrachloromethane, a colourless, dense, highly toxic, volatile, nonflammable liquid possessing a characteristic odour and belonging to the family of organic halogen compounds, used principally in the manufacture of dichlorodifluoromethane. Carbon tetrachloride is commonly used as a chemical intermediate, solvent, and dry-cleaning fluid. It was widely used as a cleaning fluid. Carbon tetrachloride was also used in fire extinguishers and as a fumigant to kill insects in grain. Human exposure to carbon tetrachloride from occupational or environmental sources is low and unlikely to produce acute kidney toxicity. Carbon tetrachloride is a manufactured chemical and does not occur naturally in the environment.