Butyltin tris(2-ethylhexanoate)
CAS Number
23850-94-4
EC Number
245-912-1
What is Butyltin tris(2-ethylhexanoate)?
Butyltin tris(2-ethylhexanoate) (CAS 23850-94-4) is an organotin catalyst used in coatings, adhesives, sealants, and polymer systems. Also marketed as Fascat 4102 and Fascat 9201.
Where is Butyltin tris(2-ethylhexanoate) used?
- Moisture-cure and two-component polyurethane sealants: promotes tin-catalyzed urethane bond formation, influencing open time and final mechanical properties
- Silicone elastomers: drives condensation cross-linking, with catalyst loading determining cure depth and surface tack-free time
- Industrial coatings: 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.
Commercial specifications
- Liquid, typically at high tin-content concentrations suited for direct addition to formulations or dilution into solvent-based systems
- Packaging ranges from drums to intermediate bulk containers
Other Names (Synonyms)
Stannane, butyltris((2-ethyl-1-oxohexyl)oxy)-|Fascat 4102|Fascat 9201|Butyltin tris(2-ethylhexoate)|Butyltris((2-ethyl-1-oxohexyl)oxy)stannane|Stannane, butyltris((2-ethylhexanoyl)oxy)-|Hexanoic acid, 2-ethyl-, 1,1',1''-(butylstannylidyne) ester|Monobutyltin tris(2-ethylhexanoate)
What are the physical properties of Butyltin tris(2-ethylhexanoate)?
Melting Point -33°C
Boiling Point 544.8±33.0 °C(Predicted)
Density 1.105 g/mL at 25 °C(lit.)
Flash Point >230 °F
Water Solubility 152μg/L at 20℃
Vapor Pressure 0.47Pa at 25℃
Refractive Index n 20/D 1.465(lit.)
Log P 2.55 at 20℃
How is Butyltin tris(2-ethylhexanoate) classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS07· Irritant GHS08· Health Hazard
Hazard Statements
H314 Causes severe skin burns and eye damage
H315 Causes skin irritation
H319 Causes serious eye irritation
H412 Harmful to aquatic life with long lasting effects
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P273 Avoid release to the environment.
Which trade and regulatory codes apply to Butyltin tris(2-ethylhexanoate)?
UN Number 2788
ADR Class 6.1
Packing Group III
WGK (Germany) 3