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TIB KAT 425 is a liquid organotin catalyst based on a dioctyltin oxide (DOTO) formulation, engineered for the efficient curing of silicones and silane-terminated systems.
TIB KAT 425 is particularly effective in one-component (1K) moisture-curing systems, including MS polymers and alkoxy-functional RTV silicones.
TIB KAT 425 offers a balance of fast reactivity and good storage stability, making it ideal for adhesives, sealants, and coating applications.
CAS Number: 870-08-6
EC Number: Not assigned
Molecular Formula: C₁₆H₃₄OSn
Molecular Weight: 361.1 g/mol
Synonyms: TIB KAT 425, Dioctyltin oxide (DOTO), DOT-silane blend, TIB KAT 425 catalyst, Organotin catalyst 425, TIB KAT 425 silicone catalyst, TIB KAT 425 silane curing catalyst, TIB KAT 425 MS polymer catalyst, TIB KAT 425 RTV silicone catalyst, TIB KAT 425 moisture-curing catalyst, TIB KAT 425 one-component system catalyst, TIB KAT 425 adhesive catalyst, TIB KAT 425 sealant catalyst, TIB KAT 425 coating catalyst, TIB KAT 425 organometallic catalyst, TIB KAT 425 tin-based catalyst, TIB KAT 425 curing agent, TIB KAT 425 crosslinking catalyst, TIB KAT 425 polymerization catalyst, TIB KAT 425 DOTO catalyst, TIB KAT 425 dioctyltin catalyst
APPLICATIONS
TIB KAT 425 is used in the curing of silicones and silane-terminated polymer systems.
TIB KAT 425 is applied in one-component (1K) moisture-curing MS polymer systems for adhesives and sealants.
TIB KAT 425 is utilized in alkoxy-functional RTV silicone formulations to enable ambient curing.
TIB KAT 425 is suitable for construction and automotive industry adhesives and sealants.
TIB KAT 425 is incorporated into coatings requiring moisture-reactive crosslinking.
TIB KAT 425 is effective in systems demanding controlled reactivity and long shelf-life.
TIB KAT 425 supports compatibility with a wide range of fillers and pigments.
TIB KAT 425 is ideal for formulations requiring low volatility and high thermal stability.
TIB KAT 425 ensures high-performance curing without compromising pot life or handling.
TIB KAT 425 is used as a catalyst in the production of flexible polyurethane foams, accelerating the reaction between isocyanates and polyols.
TIB KAT 425 is employed in slabstock foam production for bedding and furniture cushioning applications.
TIB KAT 425 is applied in high-resilience (HR) foam systems, providing better elasticity and durability.
TIB KAT 425 is used in molded flexible foam systems for automotive seating and interior parts.
TIB KAT 425 is utilized in viscoelastic memory foam formulations to control recovery speed and softness.
TIB KAT 425 is used in the production of open-cell flexible foams with enhanced airflow and breathability.
TIB KAT 425 is employed in the manufacture of flame-retardant flexible foams for safety-critical applications.
TIB KAT 425 is applied in flexible foam systems for ergonomic furniture and office seating solutions.
TIB KAT 425 is used in footwear foam applications for cushioning and long-term resilience.
TIB KAT 425 is utilized in the production of carpet underlay foams for enhanced underfoot comfort.
TIB KAT 425 is used in the fabrication of vibration-damping flexible foams for industrial and electronics applications.
TIB KAT 425 is employed in lightweight flexible packaging foams for protective cushioning.
TIB KAT 425 is applied in automotive headrests, armrests, and door panel foams.
TIB KAT 425 is used in sports and recreation foam products for protective padding and shock absorption.
TIB KAT 425 is utilized in hybrid foam systems for dual hardness applications in seating.
TIB KAT 425 is used in flexible insulation foams for noise and thermal insulation in automotive and construction industries.
TIB KAT 425 is employed in roll-stock foam sheet production for continuous manufacturing processes.
TIB KAT 425 is applied in the development of low-emission flexible foams to meet indoor air quality standards.
TIB KAT 425 is used in medical support foams for cushions, mattresses, and orthopedic products.
TIB KAT 425 is utilized in acoustic foam panels for soundproofing and noise reduction.
TIB KAT 425 is used in memory foam pillows and mattresses to enhance pressure relief and comfort.
TIB KAT 425 is employed in theater and auditorium seating foams for prolonged comfort under use.
TIB KAT 425 is applied in the production of lightweight flexible foams for aerospace interior components.
TIB KAT 425 is used in low-density flexible foam systems for consumer packaging and cushioning products.
TIB KAT 425 is utilized in the fabrication of non-yellowing flexible foams with enhanced UV stability.
TIB KAT 425 is used in flexible foams for toys and consumer goods requiring softness and durability.
TIB KAT 425 is employed in flexible foams designed for healthcare applications, including anti-decubitus products.
TIB KAT 425 is applied in flexible foams for high-comfort, high-durability office chairs.
TIB KAT 425 is used in combination with delayed-action catalysts to tailor foam rise profiles.
TIB KAT 425 is utilized in developing bio-based flexible foam systems to support sustainable manufacturing.
TIB KAT 425 is a polyurethane catalyst based on a balanced amine structure, specifically designed for flexible foam applications.
TIB KAT 425 promotes both blowing and gelling reactions, ensuring a balanced reaction profile for optimal foam properties.
TIB KAT 425 appears as a clear to slightly yellow liquid, allowing for easy handling and mixing into foam formulations.
TIB KAT 425 helps produce fine, uniform cell structures in flexible polyurethane foams.
TIB KAT 425 is compatible with a wide range of polyether and polyester polyols used in flexible foam systems.
TIB KAT 425 provides good reactivity control, allowing formulators to adjust cream time, rise time, and tack-free time.
DESCRIPTION
TIB KAT 425 is a clear to slightly yellowish liquid organotin catalyst with a mild odor.
TIB KAT 425 is based on a dioctyltin oxide (DOTO) structure, offering effective catalysis in moisture-curing systems.
TIB KAT 425 is sensitive to hydrolysis; therefore, contact with moisture should be minimized.
Once opened, containers should be inertized with nitrogen to maintain product integrity.
TIB KAT 425 provides a good balance between reactivity and stability, ensuring efficient curing without compromising shelf-life.
TIB KAT 425 is suitable for formulations requiring controlled curing rates and long-term storage stability.
TIB KAT 425 is formulated to deliver low-VOC emissions, helping meet indoor air quality requirements.
TIB KAT 425 ensures stable foam processing even under variable environmental conditions.
TIB KAT 425 is typically dosed between 0.05 and 0.3 parts per 100 parts of polyol, depending on system requirements.
TIB KAT 425 is widely used in automotive, furniture, bedding, and specialty flexible foam applications where comfort, durability, and performance are critical.
PROPERTIES
Chemical Nature: Dioctyltin oxide (DOTO)
Common Name: TIB KAT 425
Appearance: Clear to slightly yellowish liquid
Odor: Mild
Density: Approx. 1.1 g/cm³
Solubility: Miscible with alcohols; hydrolyzes in water
Flash Point: >100°C
Reactivity: Reacts with moisture; catalyzes curing of silicones and silane systems
Thermal Stability: Stable under recommended storage conditions
Storage Temperature: 10–30°C in dry conditions
Shelf Life: At least 12 months in unopened, sealed containers
Packaging: 25 kg plastic drum, 200 kg plastic drum, 1000 kg IBC; other sizes upon request
FIRST AID
Inhalation:
Move to fresh air.
Seek medical attention if symptoms persist.
Skin Contact:
Wash thoroughly with soap and water.
Remove contaminated clothing.
Seek medical help if irritation occurs.
Eye Contact:
Flush eyes with water for at least 15 minutes.
Remove contact lenses if possible.
Consult medical personnel if irritation continues.
Ingestion:
Do not induce vomiting.
Rinse mouth and seek medical attention immediately.
Note to Physicians:
Treat symptomatically.
No specific antidote known.
HANDLING AND STORAGE
Handling
Use in a well-ventilated area.
Wear appropriate personal protective equipment (PPE) including gloves and goggles.
Avoid exposure to moisture during formulation.
Spill and Leak Procedures
Contain spill with inert material.
Prevent entry into waterways.
Dispose of waste in accordance with local regulations.
Storage
Store in tightly closed containers in a cool, dry, well-ventilated area.
Protect from humidity and frost.
Use nitrogen blanketing for opened containers if possible.
