Gelest Inc

Gelest Inc

Gelest, Inc., headquartered in Morrisville, PA, USA, was founded in 1991 to serve the advanced technology applications markets and is recognized worldwide as an innovator, manufacturer and supplier of Organo-Silicon and Metal-Organic materials for commercial production and R&D support.

Since its inception, Gelest, Inc. has continuously added experts in the fields of silanes, silicones, and metal-organics.

The technical staff includes individuals with extensive hands-on experience and academic credentials (see Management Team).  Joint developments between customers and staff have led to an increased product offering from several hundred materials to the current listing of several thousand materials.

The company has focused its research and development efforts toward expanding the offering of Group 4A and 4B analogs.  Gelest, Inc. offers the most comprehensive selection of silane, silicone, and metal-organic materials in the world.


Gelest, Inc. is an innovator, manufacturer, and supplier of commercial and research quantities of over 3,000 organosilicon compounds, silicones, and metal-organic compounds and is committed to being a leader in the materials science marketplace, serving advanced technology markets through a customer-driven approach. The company encourages close relationships with its customers to develop application specific materials to meet the end user’s specifications for performance and purity.

Gelest, Inc. provides focused technical development and application support for:

  • Semiconductors
  • Optical Materials
  • Pharmaceutical Synthesis
  • Diagnostics and Separation Science
  • Specialty Polymeric Materials
  • Surface Treated Micro-Particles
  • Cosmetic Materials