Why do chemical products often pass through several factories before reaching consumers?

Chemical products often pass through several factories because the chemical synthesis of complex compounds typically requires a succession of individual steps. Rather than a single-stage process, industrial production often involves transforming readily available, inexpensive substances into a desired end product through a series of intermediate stages.12

Each step in this sequence generates a chemical intermediate—a substance produced during the conversion of a reactant into a final product. Because these intermediates must be isolated, purified, or further reacted, they are often processed in different facilities specialized for specific chemical transformations.123

Furthermore, the chemical industry relies on a supply chain where basic chemicals, such as ammonia or sulfuric acid, serve as the raw materials for other industries. Consequently, a product may move through multiple factories as it is refined, combined with other materials, or integrated into more complex goods like pharmaceuticals, textiles, or electronic microcircuits, which may involve nearly 100 separate chemical steps from start to finish.3