Essential Solutions with Extraordinary Results
SI Group is a global leader in the innovative technology of performance additives, process solutions, active pharmaceutical ingredients, and chemical intermediates. Our solutions are essential to many diverse industries and applications, creating extraordinary results. We drive value by enhancing the quality, performance, and durability of countless items we use every day.
We are on a journey to captivate our customers at every level. Whether that means expanding our capabilities, global reach, or providing new innovations and technologies that create value. Our approach is customized to exceed customer needs and deliver superior performance.

At SI Group, we create smart chemistry that solves global challenges and makes great things possible.
SI Group is a performance additives and intermediates business. We offer a broad array of products that feed into diverse applications including pharmaceuticals; plastics; oil and gas; and tires, among many others. We create solutions that provide formulators and manufacturers with the ability to increase efficacy, efficiency, productivity, and purity in countless industrial and consumer goods.
Our company unites us. So do our values and the approach that we bring into the workplace each day. There’s more to a job than just the work—and we believe it’s those “other things” that set us apart - learn more about us at www.siigroup.com.