What is an additive?

An additive is anythingthat is added to a processthat is not a basicrawmaterial.It isusuallypresent in such small quantitiesthat it does not interfere with finalproductquality.It is usuallyadded to act as an enhancer or to prevent some unwantedreaction.For instance,anti-foam additives areadded to columns, evaporators,reactors,etc. topreventfoaming.Inhibitorsareadded to Styrenesystems to preventpolymerization. Awell-knownadditive is adetergent added to motoroils and gasoline to keepyourengineclean.

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