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FASCAT® 4208X Catalyst
FASCAT® 4208X, dibutyltin bis(2-ethylhexoate in 50% xylene), is a catalyst used in silanol condensation reactions for silicone-based caulk and sealants.
The FASCAT® 4208X catalyst is utilized in silanol condensation reactions for caulk and sealant applications, as well as in the manufacturing process of silicones. The suggested usage level for FASCAT® 4208X in formulations is 1.3%. It exhibits moderate activity as a curing catalyst for silanol condensation polymerization processes.
FASCAT® 4208X can be utilized in systems containing one or two components compatible with aromatic solvents. The FASCAT® 4208X has a moderate level of activity, providing silicone emulsions and adhesives that cure at room temperature for an extended pot life.
Specifications
Form: Liquid Color: White to straw CAS registry number: 2781-10-4 (1330-20-7 xylene) Formula: Bu2Sn(OOC8H15)2 Molecular Weight: 491.4 Sn %: 11.9 Specific gravity: (@ 25°C) 0.97 Refractive index: 1.483 Viscosity: 3 cs APHA color: 29
Primary Chemistry: Dibutyltin bis(2-ethylhexoate in 50% Xylene)
Features & Benefits
Insoluble in water Liquid form for ease of processing Incorporated into the final product and does not require removal Soluble in many organic solvents
Problems Solved
Lack of catalyst activity in silanol condensation reactions Current catalyst does not extend pot life for silicone emulsions
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ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
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