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TIB KAT 233

TIB KAT 233 distributed by DKSH is a catalyst for PU and silicone system.
TIB KAT 233 is suitable for use in paints and coatings.
TIB KAT 233 is designed for polycondensation reactions of RTV silicon resins, silanes and 1 component MS Silyl systems.

CAS Number: 1067-33-0
Molecular Formula: C12H24O4Sn
Molecular Weight: 351.03
EINECS Number: 213-928-8

Synonyms: DIBUTYLTIN DIACETATE, 1067-33-0, Diacetoxybutyltin, Diacetoxydibutyltin, Stannane, bis(acetyloxy)dibutyl-, Di-n-butyltin diacetate, Bis(acetyloxy)dibutylstannane, Dibutyl tin diacetate, T 1 (Catalyst), Stannane, diacetoxydibutyl-, Diacetoxydibutylstannane, Dibutylstannium diacetate, Fomrez sul-3, Diacetoxydibutlyltin, Dibutyltin di(acetate), Dibutyltin acetate, Tin, dibutyl-, diacetate, BA 2726, NCI-C02028, Di-n-butyldiacetoxytin, Dibutyldiacetoxystannane, Caswell No. 293A, BC9AZH1UZG, NSC 8786, CCRIS 218, bis(acetyloxy)(dibutyl)stannane, DTXSID3020419, HSDB 4115, Acetic acid, 1,1'-(dibutylstannylene) ester, NSC-8786, EINECS 213-928-8, DTXCID30419, DIBUTYLTIN DIACETATE [HSDB], EC 213-928-8, Ti(catalyst), Dibutly Tin Diacetate, bis(acetyloxy)dibutyl stannane, Fomrez sul3, Dinbutyltin diacetate, DIACETOXYBUTYLIN, Dibutyltin diacetic acid, Diacetoxydibutyl stannane, Tin, dibutyl, diacetate, METACURE T 1, Stannane, diacetoxydibutyl, SYL-OFF 23A, S-CAT 8, FASCAT 4200, TIN,DIBURYL-,DIACETATE, Stannane, bis(acetyloxy)dibutyl, (acetyloxy)dibutylstannyl acetate, U 200 (TIN COMPOUND), U 200, 213-928-8, [acetyloxy(dibutyl)stannyl] Acetate, T 1, Metacure T-1, Bis(acetato)dibutyltin, Tin, diacetate, T 1 (VAN), EINECS 241-521-5, 17523-06-7, UNII-BC9AZH1UZG, NSC8786, WLN: 1VO-SN-4&4&OV1, Tox21_200116, [acetyloxy(dibutyl)stannyl] ethanoate, Dibutyltin diacetate, technical grade, MFCD00008697, AKOS006029123, NCGC00164363-01, NCGC00164363-02, NCGC00257670-01, NCI60_041940, CAS-1067-33-0, NS00077146, acetic acid [acetyloxy(dibutyl)stannyl] ester, F88278, A801493, Q27274595, Ba 2726;ba2726;bis(acetyloxy)dibutyl-stannan;Bis(acetyloxy)dibutylstannane;bis(acetyloxy)dibutyl-Stannane;Diacetoxybutyltin;Diacetoxydibutlyltin;diacetoxydibutyl-stannan

TIB KAT 233 is a high-performance organotin catalyst produced by TIB Chemicals, primarily composed of dibutyltin diacetate (DBTA), with the chemical formula C₁₂H₂₄O₄Sn and CAS number 1067-33-0.
This clear, colorless to pale yellow liquid contains a tin content ranging from 32.5% to 34.0% and is slightly sensitive to moisture, necessitating careful storage and handling .

TIB KAT 233 is extensively utilized across various industries due to its versatility and effectiveness in catalyzing multiple chemical reactions.
In the polyurethane industry, it serves as a catalyst in the synthesis of both flexible and rigid foams, which are commonly used in products like mattresses, upholstery, and insulation materials .
TIB KAT 233s role in transesterification reactions makes it valuable in the production of acrylics, oleochemicals, and other esters, contributing to the manufacturing of synthetic lubricants and antioxidants .

TIB KAT 233 is available in India and Japan and Malaysia and Myanmar, South Korea and Thailand.
TIB KAT 233 is a catalyst for PU coatings and silicone systems.
In the coatings sector, TIB KAT 233 is employed to enhance the performance of paints and varnishes.

It promotes curing and crosslinking reactions, leading to improved film formation, adhesion, and overall durability of the coatings.
This makes it suitable for applications in architectural, industrial, automotive, and marine coatings, where resistance to environmental factors is crucial .
TIB KAT 233 is a catalyst for polyurethane systems, transesterication, polycondensation reactions, and for the production of raw materials for polycarbonates, with a tin content of 32.5-34.0%.

TIB KAT 233 is a catalyst that is used for the synthesis of polyurethane systems, transesterication, polycondensation reactions and for the production of raw material for polycarbonates.
TIB KAT 233 has a tin content of 32.5-34.0%.
TIB KAT 233 is a catalyst for PU coatings and silicone systems.

TIB KAT 233 is available in India and Japan and Malaysia and Myanmar, South Korea and Thailand.
TIB KAT 233 is used in silanol condensation reactions for caulk and sealant applications, accelerates blocked isocyanate production for urethane coatings in the automotive OEM market, and cross-links urethane coating systems for the automotive and industrial coatings markets.

Additionally, TIB KAT 233 acts as a stabilizer for chlorinated organics and polyvinyl chloride, a curing agent for silicone elastomers, and a precursor for thin-lm tin(IV) oxide gas sensing materials by laser-assisted chemical vapor deposition.
TIB KAT 233 is a fast-acting liquid catalyst.

TIB KAT 233 is used in synthesis of polyurethane systems, polycondensation reactions of RTV silicone resins and silanes and polycarbonates.
It is suitable for transesterification reactions of acrylics, oleochemicals and other esters.
TIB KAT 233 is also suitable for adhesives and sealants.

Additionally, TIB KAT 233 plays a significant role in the electronics industry, where it is used in the formulation of conformal coatings and potting compounds that protect sensitive electronic components from moisture and environmental stress.
Its application extends to the production of RTV silicone resins and silanes, where it acts as a catalyst in polycondensation reactions, contributing to the development of durable silicone-based materials .

Melting point: 7-10 °C (lit.)
Boiling point: 142-145 °C, 10 mm Hg (lit.)
Density: 1.32 g/mL at 25 °C (lit.)
Vapor density: 12 (vs air)
Vapor pressure: 1.3 mm Hg (25 °C)
Refractive index: n20/D 1.471 (lit.)
Flash point: >230 °F
Storage temp.: Store below +30 °C
Solubility: 0.006 g/L
Form: Liquid
Color: Colorless
Specific Gravity: 1.32
Water Solubility: Insoluble
BRN: 4136035
Exposure limits: ACGIH: TWA 0.1 mg/m³; STEL 0.2 mg/m³ (Skin); NIOSH: IDLH 25 mg/m³; TWA 0.1 mg/m³
LogP: 3.39 at 20 °C

TIB KAT 233 is a specialized organotin compound primarily composed of dibutyltin diacetate (DBTA), designed and marketed by TIB Chemicals AG, a German chemical manufacturer known for producing high-quality metal-based catalysts.
This catalyst is widely recognized in the chemical industry for its high catalytic activity, especially in applications requiring precise reaction control and consistent performance under industrial conditions.

In polyurethane (PU) chemistry, TIB KAT 233 plays a critical role by accelerating the reaction between isocyanates and polyols, which is essential for producing both flexible and rigid PU foams.
These foams are found in everyday items such as cushions, mattresses, car seats, thermal insulation, and even construction panels.
The catalyst ensures a smooth reaction rate, leading to better foam structure, cell uniformity, and enhanced mechanical properties.

Beyond foams, TIB KAT 233 is also a key component in the synthesis of polyurethane coatings and adhesives, where its inclusion improves the curing time, bonding strength, and overall durability of the final product.
This is particularly important in sectors like automotive, electronics, and construction, where the reliability of sealants and coatings is critical for long-term performance.
In transesterification and esterification reactions, such as in the production of synthetic lubricants, plasticizers, and flavor esters, TIB KAT 233 acts as an efficient catalyst, helping manufacturers achieve higher yields and cleaner reaction profiles.

Its ability to promote the exchange of ester groups under controlled temperatures makes it highly suitable for fine chemical synthesis, particularly when dealing with sensitive feedstocks or needing low impurity levels.
TIB KAT 233 improves the performance of alkyd and acrylic resins, enhancing properties like drying time, film hardness, and chemical resistance.
This makes it a go-to additive for marine paints, industrial metal coatings, and protective finishes where extreme durability is required.

TIB KAT 233 is also valuable in RTV (Room-Temperature Vulcanizing) silicone applications, where it catalyzes polycondensation reactions of silanol-functional silicones, leading to materials that remain elastic and stable even under thermal and environmental stress.
Such materials are commonly used in electronics encapsulation, medical devices, and mold-making.

TIB KAT 233 is a clear, colorless to pale yellow liquid catalyst with multiple uses:
TIB KAT 233 is used in silanol condensation reactions for caulk and sealant applications.
TIB KAT 233 accelerates blocked isocyanate production for urethane coatings used in the automotive OEM market.

TIB KAT 233 cross-links urethane coating systems for the automotive and industrial coatings markets.
TIB KAT 233 catalyzes the transesterication of esters for the antioxidant and synthetic lubricant markets.
TIB KAT 233 catalyzes polyurethane systems, transesterication, polycondensation reactions, and producing raw polycarbonate materials.

TIB KAT 233 has a tin content of 32.5-34.0%.
TIB KAT 233 is used in paints and coatings.
TIB KAT has now become a real high-quality special catalyst trademark on a global scale.

TIB Chemicals always rises to this challenge – again and again.
TIB KAT 233 comes to the development of catalysts for very special applications and to adapt them to the ever changing market conditions.
Heterogeneous catalysis is a form of catalysis in which the catalyst and the reacting substances of a chemical reaction are present in different phases, for example as gas and solid or as immiscible liquids.

Almost all chemical products have come into contact with a heterogeneous catalyst at some point.
TIB Chemicals has developed a range of heterogeneous catalysts based on the precious metals palladium (CAS 7440-05-3) and platinum (CAS 7440-06-4).
Activated carbon serves as the catalyst carrier.

These powder catalysts show high catalytic activity in the hydrogenation of alkenes, aldehydes, ketones, nitriles or nitro compounds.
They are also used to remove protecting groups such as the Cbz protecting group through hydrogenolysis.
TIB KAT 218 by TIB Chemicals is organotin carboxylate.

TIB KAT 218 is a multi-purpose catalyst in silane terminated polyolefins.
TIB KAT 218 exhibits good lightstability in PVC.
TIB KAT 218 can be used in esterification and trans-esterification reactions.

TIB KAT 218 is a catalyst that can be used in esterification and transesterification reactions.
TIB KAT 218 is also used in the reaction between isocyanates and alcohols.
TIB KAT 218 is suitable for can and coil coatings, elastomers, car refinishing, architectural, and other industrial coatings; and for 1p/2p adhesives and sealants.

TIB KAT 233 is supplied as a liquid with a relatively high tin content (typically around 33%), and it must be stored in tightly closed containers away from moisture and acids, as exposure can lead to hydrolysis or degradation.
Due to its tin content, it should be handled with care, using appropriate protective equipment and observing regulatory safety guidelines, particularly with regard to occupational exposure limits and environmental disposal.

Uses:
TIB KAT 233 is an effective catalyst in the curing of RTV (Room Temperature Vulcanizing) silicone rubbers, particularly those based on condensation reactions.
TIB KAT 233 promotes the crosslinking of silanol-terminated polysiloxanes with silane crosslinkers, allowing the material to cure at room temperature into a rubbery, elastic solid.
These silicone materials are used in electronics encapsulation, where they protect circuits from moisture and heat.

In mold-making and prototyping, they allow the creation of flexible, durable molds.
In medical and cosmetic products, silicone materials formed with this catalyst offer biocompatibility and chemical resistance.
In the coatings industry, TIB KAT 233 enhances the performance of alkyd and acrylic resin systems, contributing to improved film formation, curing behavior, and chemical resistance.

TIB KAT 233 is used in industrial metal coatings to provide protection against corrosion and wear.
In marine paints, it offers durability under harsh saltwater conditions.
In architectural coatings, it helps improve UV resistance, surface hardness, and scratch resistance.

TIB KAT 233, primarily composed of dibutyltin diacetate, is used as a high-performance organotin catalyst in a wide variety of industrial and chemical processes.
Its primary function is to accelerate chemical reactions—particularly those involving esterification, transesterification, and polyurethane formation—without being consumed in the process
TIB KAT 233 is extensively used as a catalyst in the production of polyurethanes, where it facilitates the reaction between isocyanates and hydroxyl-containing compounds (polyols).

This reaction is fundamental to creating flexible foams (used in furniture, mattresses, and automotive seating), rigid foams (used in thermal insulation), as well as adhesives, sealants, and elastomers.
In flexible foams, the catalyst controls the rate of gelling and blowing reactions, ensuring the foam has a uniform cell structure and desirable softness.
In rigid foams, it helps achieve quick curing and dimensional stability, which are crucial in insulation boards and construction panels.

In adhesives and sealants, it improves bond strength and curing efficiency, ensuring strong adhesion even under varying temperatures and stresses.
TIB KAT 233 is widely applied in organic synthesis processes involving ester formation.
In transesterification, it enables the efficient exchange of ester groups between alcohols and esters, which is critical in:

Production of plasticizers such as phthalates and adipates, which are used to make plastics more flexible.
Synthesis of synthetic lubricants, where ester-based oils are formulated for high-performance machinery and automotive applications.
Flavor and fragrance chemistry, where specific esters contribute to aroma and taste profiles in food and personal care products.

Oleochemical processing, particularly in the transformation of fatty acids into esters for bio-based solvents and surfactants.
TIB KAT 233 is also employed in electronic-grade materials, including potting compounds and conformal coatings, where it ensures effective encapsulation and insulation of delicate electronic components.

It enables low-temperature curing, which is critical for heat-sensitive substrates.
The cured materials are resistant to moisture, chemicals, and thermal cycling, thus extending the life of electronic devices.
Aside from its catalytic functions, TIB KAT 233 can also be involved as a chemical intermediate or additive in the formulation of plastics, rubbers, sealants, and surface modifiers.

Its presence helps fine-tune mechanical and thermal properties, making end products more robust and application-specific.
In the production of thermoplastic polyurethanes (TPUs) and reactive polymer systems, TIB KAT 233 plays a role in catalyzing reactions during reactive extrusion and in-mold polymerization.
TPUs made with this catalyst exhibit a balance of flexibility and toughness, making them suitable for automotive interior components, cables, hoses, and footwear.

The controlled reactivity ensures uniform polymer chain growth, reducing waste and improving material strength.
In powder coating technology, particularly in thermosetting powder coatings, TIB KAT 233 can act as a latent catalyst—one that becomes active upon heating.
TIB KAT 233 contributes to film formation, crosslinking, and hardening of the resin matrix.

This results in coatings with superior chemical resistance, adhesion to metal substrates, and gloss retention, which are critical for appliance coatings, automotive bodies, and metal furniture.
TIB KAT 233 is used in polymer modification reactions, including end-capping, chain-extension, and grafting techniques.

For example, modifying polyester resins to improve hydrolytic stability or increasing the functional group density of polymers for better adhesion or compatibility.
In PVC stabilizers, organotin catalysts are used to extend life span and improve clarity and resistance to thermal degradation.
In fine chemical laboratories and custom synthesis, TIB KAT 233 is frequently employed as a selective catalyst for:

Developing intermediates for pharmaceutical and agrochemical compounds.
Carrying out model transesterification reactions in research and process development.
Due to its predictable reactivity and well-documented behavior, chemists often choose it for scale-up from lab to pilot plant stages.

TIB KAT 233 is used indirectly in the manufacture of additives for high-performance synthetic lubricants, such as polyol esters (POEs) and trimellitate esters.
Aerospace turbine oils and military-grade lubricants, where performance at high temperature and oxidative stability is non-negotiable.
Refrigeration compressor oils, offering compatibility with modern refrigerants like HFCs and HFOs.

TIB KAT 233 finds some niche application in textile finishing, especially in the curing of silicone-based hydrophobic treatments applied to fabrics for water-repellency, stain resistance, and soft feel.
This is common in outdoor apparel, automotive textiles, and technical fabrics, where resistance to moisture, oil, and UV is critical.
The construction industry makes use of TIB KAT 233 indirectly in sealants, caulks, coatings, and adhesives that are exposed to extreme environmental conditions.

For example, in structural glazing sealants, it helps in forming elastic, UV-resistant silicone materials that bond glass to metal.
In joint sealants, its use ensures long-term flexibility, water resistance, and adhesion on diverse substrates like concrete, metal, and glass.

Safety Profile:
TIB KAT 233, being primarily composed of dibutyltin diacetate, is classified as a hazardous organotin compound.
While it is widely used in industrial catalysis, it must be handled with care due to its toxicological and environmental risks.
Below is a comprehensive overview of its hazards, with expanded explanations to provide a deeper understanding of its effects on health, safety, and the environment.

TIB KAT 233 is moderately to highly toxic if ingested, inhaled, or absorbed through the skin.
Oral exposure can cause gastrointestinal distress, such as nausea, vomiting, abdominal pain, and in severe cases, damage to internal organs like the liver and kidneys.
Inhalation of vapors or aerosols can irritate the respiratory tract, leading to coughing, shortness of breath, and throat discomfort.

In poorly ventilated areas, exposure may result in systemic toxicity.
Dermal exposure may result in skin irritation or chemical burns. Repeated contact can lead to dermatitis or even sensitization.
TIB KAT 233 is classified as an irritant to skin and eyes. Direct contact can cause redness, swelling, and pain.

Eye exposure may result in conjunctivitis, tearing, blurred vision, or even corneal injury in severe cases.
Some individuals may develop allergic reactions upon repeated or prolonged contact, particularly if the material is absorbed through damaged skin.
Respiratory sensitization has not been conclusively documented but cannot be ruled out with prolonged exposure to vapors or mists.

TIB KAT 233s, including dibutyltin diacetate, have shown toxic effects on the liver, kidneys, thymus, and immune system in animal studies.
Repeated exposure has been associated with liver enzyme elevation, thymic atrophy, and kidney damage.
Chronic exposure could suppress immune function, increasing susceptibility to infections or inflammation.

Organotins have been linked to reproductive toxicity, especially in animal models.
TIB KAT 233s may impair fertility, affect sperm quality, or disrupt embryonic development.