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FASCAT® 4233 is a high-efficiency proprietary catalyst of butyltin mercaptide used in CASE applications.
FASCAT® 4233 is a catalyst with a specialized proprietary blended grade of butyltin mercaptide, frequently used in CASE applications. This catalyst is specifically used for the synthesis and curing of polyurethanes. It has the advantage of providing a delayed action cure, which is different from organotin carboxylates like FASCAT® 4202.
Form: Oily liquid
Color: Light amber
Sn %: 17.9
Specific gravity @ 25°C: 1.12
Refractive index @ 25°C: 1.50
Viscosity @ 25°C, cs: 45
Freezing point, °C: −30
Flash point, °C: >120
Gardner color: 0.7
Primary Chemistry:
Butyltin mercaptide
Lack of heat stability in PVC production
Chemical intermediates
Coatings
Adhesives
Inks
Sealants
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