The chemical industry transforms raw materials like petroleum, natural gas, and coal into thousands of products used across nearly every sector of the economy. Valued at roughly $6.2 trillion globally in 2024, it is one of the largest manufacturing industries in the world and touches everything from the fertilizer on farms to the paint on your walls to the active ingredients in your medications.
What the Industry Actually Produces
At its core, chemical manufacturing takes organic and inorganic raw materials and converts them through chemical processes into useful products. That single description covers an enormous range of outputs. The U.S. Bureau of Labor Statistics breaks the industry into seven major groups:
- Basic chemicals: the foundational building blocks (acids, gases, petrochemicals) that other manufacturers use as ingredients
- Resins, synthetic rubber, and synthetic fibers: the plastics and materials found in packaging, tires, and clothing
- Agricultural chemicals: fertilizers, pesticides, and herbicides
- Pharmaceuticals and medicines: prescription drugs, over-the-counter medications, and vaccines
- Paints, coatings, and adhesives: protective and decorative finishes for buildings, vehicles, and consumer goods
- Soaps, cleaning compounds, and personal care products: detergents, shampoos, and cosmetics
- Other chemical products: everything from photographic film to explosives to printing ink
More than 80% of basic and specialty chemical demand comes from industrial customers rather than individual consumers. You rarely buy a chemical directly. Instead, you buy a car, a house, food, or clothing that required chemical products somewhere along the supply chain.
Commodity vs. Specialty Chemicals
The industry splits into two broad categories based on how products are made and sold. Commodity chemicals are high-volume, relatively simple substances produced in continuous, round-the-clock manufacturing processes. Think of ethylene (the basis for most plastics), sulfuric acid, or chlorine. These products are interchangeable between suppliers, so competition centers on price and efficiency. Profit margins tend to be thin, sometimes around 1% for companies whose chemical operations sit alongside oil refining.
Specialty chemicals are the opposite in almost every respect. They’re manufactured in smaller batches, often with complex formulations tailored to a specific use. A specialty chemical might be an additive that makes engine oil last longer or a coating that prevents corrosion on offshore platforms. Because their value lies in what they do rather than how much they weigh, specialty chemicals command higher margins. Where a commodity chemical might have dozens of applications, a specialty product typically serves just one or two.
Where the Raw Materials Come From
Crude oil is the primary feedstock for the global chemical industry. Natural gas and coal also play major roles, with the balance depending on regional resources and economics. In China, for example, the industry consumed about 89 million metric tons of crude oil, 13 million metric tons of natural gas, and 180 million metric tons of coal as feedstock in a single year. China’s production of PVC, a common plastic used in pipes and construction, is 76% coal-based, taking advantage of the country’s abundant coal reserves. Most of the rest of the world makes PVC from petroleum.
These fossil-based feedstocks supply the carbon and hydrogen atoms that form the backbone of plastics, synthetic fibers, solvents, and countless other products. Minerals like phosphate rock and potash serve as the starting point for fertilizers, while biological materials such as plant oils and starches are increasingly used as renewable alternatives to petroleum-derived ingredients.
How Chemical Manufacturing Works
Chemical plants rely on a set of core physical and chemical steps that engineers call “unit operations.” These are the building blocks that get combined in different sequences depending on what’s being made. Distillation, for instance, separates crude oil into lighter and heavier fractions by exploiting differences in boiling points. Filtration removes solid particles from liquids. Crystallization purifies a substance by forming solid crystals from a solution.
On the chemical side, the key processes include polymerization (linking small molecules into long chains to create plastics and synthetic rubber), oxidation (adding oxygen to create new compounds), and catalysis (using a substance that speeds up a reaction without being consumed by it). Catalysts are essential to modern chemical manufacturing because they allow reactions to happen faster, at lower temperatures, and with less waste. A single catalyst can drive the same reaction millions of times before it needs to be replaced.
The difference between a commodity plant and a specialty plant is often visible at a glance. A commodity facility runs continuously, with material flowing through massive reactors and towers 24 hours a day. A specialty plant looks more like a kitchen: smaller vessels producing one batch at a time, cleaned between runs, with formulas adjusted for each customer’s needs.
The Largest Companies
The chemical industry is dominated by a mix of European, Chinese, and American corporations. In 2024, the top five by chemical sales were:
- BASF (Germany): $70.6 billion, spanning performance materials, nutrition, personal care, and industrial solutions
- Sinopec (China): $58.1 billion, heavily invested in new ethylene crackers and refinery complexes
- Dow (United States): $43.0 billion, focused on plastics, coatings, and silicones
- PetroChina (China): $42.8 billion, with profit margins around 1% reflecting its commodity-heavy portfolio
- ExxonMobil (United States): $41.1 billion, expanding into plastics recycling through pyrolysis technology
Several of these companies are simultaneously oil producers and chemical manufacturers, since petroleum serves as both a fuel and a feedstock. That dual role gives them control over their own supply chains but also ties their fortunes to volatile oil markets.
Environmental Impact and Green Chemistry
The chemical industry is one of the most energy-intensive sectors in manufacturing and a significant source of greenhouse gas emissions, both from the energy it consumes and from the fossil carbon embedded in its products. Plastics that end up in landfills or the ocean represent stored petroleum carbon that will persist for centuries.
The industry’s primary environmental framework is green chemistry, a set of twelve principles developed to reduce pollution and hazard at the design stage rather than cleaning up after the fact. The core ideas are straightforward: prevent waste rather than treating it, use renewable feedstocks instead of fossil fuels, design products that break down safely after use, run reactions at lower temperatures to save energy, and minimize the chance of accidents by choosing safer chemical forms.
In practice, adoption is uneven. Some principles, like using catalysts to reduce waste, are already standard because they also save money. Others, like switching entirely to renewable feedstocks, remain expensive at industrial scale. Companies like ExxonMobil are investing in chemical recycling, which breaks used plastics back down into raw materials that can be rebuilt into new products. Routes that use biomass or captured carbon dioxide as feedstocks are under development but not yet widely commercialized.
Why It Matters to Everyday Life
The chemical industry is often invisible to consumers, but it sits upstream of nearly everything you buy. The semiconductor chips in your phone require ultra-pure chemicals. The food you eat depends on synthetic fertilizers and crop protection products. The insulation in your home, the tires on your car, the fabric in your clothing, the adhesive holding your shoes together: all chemical products. Even the clean water coming out of your tap relies on chemical treatment.
With the global market projected to reach $6.3 trillion by 2025 at a growth rate of about 2.3%, the industry continues to expand alongside population growth and industrialization. The central tension going forward is producing the materials modern life demands while reducing dependence on fossil feedstocks and cutting the environmental footprint of manufacturing itself.