Deutsch: Chemischer Stoff / Español: Sustancia quemica
In chemistry, a chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e. without breaking chemical bonds. It can be solid, liquid,, gas, or plasma.
In the context of quality management, the term "chemical" refers to the various chemical substances used in industrial and manufacturing processes. Quality management practices in the chemical industry aim to ensure that these substances are produced, handled, and used in a safe and controlled manner, with minimal impact on the environment and human health.
Examples of chemical substances used in industries include:
Fuels such as gasoline, diesel, and natural gas.
Solvents used in the production of paints, adhesives, and cleaning agents.
Chemicals used in the production of plastics, rubber, and synthetic fibers.
Agricultural chemicals such as fertilizers, herbicides, and pesticides.
Pharmaceuticals such as drugs, vaccines, and medical devices.
Industrial gases such as nitrogen, oxygen, and carbon dioxide.
Quality management practices in the chemical industry include implementing processes for controlling the purity, composition, and consistency of chemical substances, monitoring and controlling emissions from production and usage, and ensuring the safe handling, storage, and disposal of chemicals.