Today we mark a significant milestone at Evonik: 80 years of AEROSIL® production at our Rheinfelden site. Since the first batch on August 3, 1944, AEROSIL® has become one of Evonik Industries' most successful products. The brainchild of chemist Harry Kloepfer, this pyrogenic silica not only revolutionized the industry back in 1942 but continues to shape it today. Our commitment to innovation and excellence has seen AEROSIL® become indispensable across various sectors, from automotive to pharmaceuticals. Discover more at link

AEROSIL® from Evonik has been proving useful in practically every area of day-to-day life since 1942. Our branded fumed silica can now be found in more than 100 different products – in a wide variety of everyday items as well as in high-tech applications: from toothpaste to car batteries. And they all have one thing in common: even small amounts of the fluffy white powder make a big difference.

Now, at age 80, AEROSIL® continues to offer new solutions for applications that its inventor, Dr. Harry Kloepfer, did not even dream of, such as microchips.

The beginning of a success story

When Kloepfer invented a process for producing an extremely fine silica in 1942, he had no idea that this would mark the first chapter of an extraordinary success story that is continuing to this day. The chemist had originally developed the substance as an alternative to carbon blacks as a reinforcing filler for car tires , but it turned out to be a trailblazer for many more applications. Kloepfer’s fumed silica was registered under the trade name AEROSIL®. Since then, the product has been continuously developed and many new variants have been added to the product range.

AEROSIL® makes a difference in many applications

Today our AEROSIL® portfolio covers a wide range of surface areas as well as very different surface chemistries. Fumed silica is now used to optimize products in many different sectors of industry from tires to pharmaceuticals: AEROSIL® ensures that toner doesn’t clump, teeth get whiter, silicones don’t tear, coatings stick, walls are insulated, adhesives hold longer, concrete hardens better, and much more.

AEROSIL® fumed silica is characterized by one thing in particular: Evonik’s value-added-product philosophy. This philosophy is driven by a set of service components which complement each other and work together perfectly to contribute to achieving enormous effects with aggregated particles.

From stomping on bags to high-tech compaction

Our expertise is not only focused on applications, but also on packaging and handling according to contemporary requirements. Currently, Evonik offers AEROSIL® in standard paper bags, flexible intermediate bulk containers (FIBC), silo transport, thermal packaging, and compaction technology. Can you imagine that people once used to jump on bags to compress the fluffy AEROSIL®?

AEROSIL® production sites – then and now 

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AEROSIL® fumed silica worldwide

The future of AEROSIL®

AEROSIL® has contributed tremendously to making life easier for all of us – it creates significant effects with just a small dosage. And Evonik’s silica experts are committed to continually creating new AEROSIL® products that boost innovation and support the growth of our customers’ business around the world. 

AEROSIL® is produced worldwide with a consistent high level of product quality at eight Evonik Industries sites in Germany, Japan, China, France, Belgium, and the United States. It is supplied to almost 100 countries worldwide, using customized logistics concepts to ensure reliable delivery. An essential part of our philosophy is worldwide technical support and advice for tailor-made solutions with AEROSIL®. We appreciate close customer contact because it helps us to continuously optimize our well-established fumed silica for new applications and develop innovative AEROSIL® products.

AEROSIL® was invented to improve – now with 80 years of expertise!