Butyltin tris(2-ethylhexanoate)

Butyltin tris(2-ethylhexanoate) (CAS 23850-94-4), sold commercially as Fascat 4102 and Fascat 9201, is an organotin catalyst used across coatings, adhesives, sealants, and polymer systems. It accelerates curing and cross-linking reactions, enabling manufacturers to achieve controlled network formation at defined processing conditions. In moisture-cure and two-component polyurethane sealants, it promotes tin-catalyzed urethane bond formation.

This directly influences open time and final mechanical properties. Silicone elastomer producers use it to drive condensation cross-linking, where catalyst loading determines cure depth and surface tack-free time. These are critical parameters for quality control. In industrial coatings, it supports isocyanate-based systems where cure speed and film hardness must meet tight application specifications.

Adhesive formulators working with reactive hot melts or structural bonding systems select it when precise pot life management and bond strength development are required. Butyltin tris(2-ethylhexanoate) is supplied as a liquid, typically at high tin-content concentrations suited for direct addition to formulations or dilution into solvent-based systems.

It is available in technical grade, the standard for industrial catalyst applications in coatings and sealants. Packaging ranges from drums to intermediate bulk containers. This reflects typical industrial procurement volumes. The product ensures consistent performance across a wide range of temperature and humidity conditions during the manufacturing process.