Specialty vs. Commodity

How Specialty Chemicals Differ from Commodity Chemicals

Specialty chemicals differ from commodity chemicals in that each one may have only one or two uses, while commodities may have dozens of different applications for each chemical. While commodity chemicals make up most of the production volume (by weight) in the global marketplace, specialty chemicals make up most of the diversity (number of different chemicals) in commerce at any given time.

Commodity chemicals are typically produced in continuous processes, 24 hours a day, 7 days a week. Specialty chemicals, because of their complex chemistries and narrowly focused applications, are frequently produced batch-by-batch in a reaction vessel. Since continuous processes employ continuous feeds and yields, the production volume is usually far greater, per chemical, than for batch processes. The main difference, however, is that a batch process is not necessarily automated, and the chemical reaction (which yields the desired product) has a distinct beginning and ending for each batch. 

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