TIB KAT 256

Tib Kat 256 is used as a catalyst by TIB Chemicals.
Tib Kat 256 is used in paints and coatings.
Tib Kat 256 is a solid catalyst used in the esterification, transesterification, and polycondensation reactions in the production of polyesters and alkyds.

CAS Number: 2273-43-0
EC / EINECS number: 218-880-1
Chemical Name: Monobutyltin oxide (MBTO) 
Molecular Formula: C4H10O2Sn
Molecular weight: ~208.8 g·mol⁻¹.

SYNONYMS:
butyl-hydroxy-oxotin, Butylhydroxyoxostannan, Butyltin oxide, n-Butyltin hydroxide oxide, N-BUTYLTIN HYDROXIDE OXIDE HYDRATE 97%, n-Butyltinhydroxideoxide, Stannane,butylhydroxyoxo-, MONO-N-BUTYLTINOXIDE, Butylstannonsure, Butylhydroxyoxo-stannane, MBTO, Butyloxohydroxystannane, FASCAT 4100, MBTO,BUTYLSTANNOIC ACID,FASCAT 4100,FASCAT 9100,N-BUTYLSTANNOIC ACID,MONO-N-BUTYLTINOXIDE,N-BUTYLTIN SESQUIOXIDE,Monobutyltin oxide(MBTO),N-BUTYLTIN HYDROXIDE OXIDE,BUTYLTIN(IV) HYDROXIDE OXIDE, Butylhydroxyoxo-stannane, n-Butyltin hydroxide oxide, 1-Butanestannonic acid, Butylhydroxyoxostannane, butyl-hydroxy-oxotin, Butylhydroxytin oxide, Butylstannonic acid, Butyltin hydroxide oxide, Mono-N-butyltin oxide, MBTO, Butyltin oxide, Butylhydroxostannane, Butylhydroxytin oxide, Butyloxostannane, Butylenestannonic acid, Stannane, butylhydroxyoxo-, 1-Butanestannonic acid, Butanestannonic acid, Butylhydroxyoxostannane, Butylstannonic acid, Butylstannoic acid, Butyltin hydroxide, oxide, Butylhydroxytin oxide, n-Butyltin oxide, MBTO, Mono-n-butyltin oxide, Butyltin hydroxide-oxide, Butylhydroxystannane, Butylstannonic acid, n-Butyltin hydroxide oxide, Butyl-hydroxy-oxo-stannane, Mono-butyl tin oxide, Butyl-stannoic acid, MBTO, Mono-n-butyltin oxide, Butyltin oxide, Butylhydroxostannane, Butyloxostannane, Butylhydroxytin oxide, N-butyltin sesquioxide, Stannane, butyloxo-

Tib Kat 256 is a well-established organotin catalyst/stabilizer material, with CAS 2273-43-0 and EC 218-880-1, formulated as a white, water-insoluble powder of high tin content.
Tib Kat 256 is highly valued in industrial polymer/resin/coating synthesis for its capacity to speed up reactions (esterification, polycondensation), to integrate into the product (avoiding downstream catalyst removal) and to deliver improved processing efficiency.

Tib Kat 256's key limitations relate to the standard precautions required for organotin compounds (handling, environmental safety).
Tib Kat 256 is a high-performance organotin catalyst specially suited for resin and coating manufacture (polyesters, alkyds, powder coatings, coil coatings, etc).

Tib Kat 256's key strengths are speed, lower temperature operation, integration into final products, stability, and broad application versatility.
For formulators and process engineers Tib Kat 256's value lies in reducing reaction times and improving final product quality, while simplifying downstream processing.

Tib Kat 256 (monobutyltin oxide) is a white organotin solid, high tin content, practically insoluble, used in small loadings (0.01-0.5 wt%) at elevated temperatures for catalysing the manufacture of polyesters, alkyds and other resin systems.
Tib Kat 256 is a solid catalyst, which is used in esterification-, transesterification- and polycondensation reactions.

Tib Kat 256 gives good results in the production of polyesters and alkyds.
Tib Kat 256 is a specific organotin compound (butyl tin oxide) used primarily as a catalyst in chemical processes.

Tib Kat 256’s a white, amorphous solid with very low solubility in water or common organic solvents, making it particularly useful for high-temperature or high-performance industrial resin and coating processes.
Tib Kat 256 is a commercial grade of MBTO produced, specified for use in esterification, transesterification and polycondensation reactions, especially in polyester and alkyd resin manufacture.

Because of its stability and incorporation into final products without needing removal, Tib Kat 256 offers processing advantages in industrial resin/coating production.

USES and APPLICATIONS of TIB KAT 256:
Tib Kat 256 is used powder coatings (saturated polyester based) for metal sheets.
Tib Kat 256 is used coil coatings for steel/aluminium.
Tib Kat 256 is used unsaturated polyester resins for moulding, gel-coat, sheet moulding compounds.

Tib Kat 256 is used plasticizer manufacture, resin intermediates.
Tib Kat 256 sees a variety of industrial uses.

Some key application areas of Tib Kat 256: Polyester resin production: Tib Kat 256 is used in the manufacture of saturated and unsaturated polyester resins (for powder coatings, coil coatings, moulding compounds) via esterification, transesterification and polycondensation reactions.

Alkyd resins and coating systems: Tib Kat 256 serves in alkyd resin synthesis (for paints, varnishes, insulating coatings) where efficient catalysis is beneficial.
Coating and film applications: The polyester and alkyd resins catalysed with Tib Kat 256 are used in coil coatings (steel, aluminium), powder coatings, film moulding, sheet moulding compounds etc.

Plasticizer and resin intermediates: Tib Kat 256 may be used in the production of polymeric plasticizers and as a raw material/intermediate in organotin chemistry.
Adhesives/sealants and specialty coatings: Supplier data indicate that butyl tin catalysts (including Tib Kat 256) are used in adhesives, sealants, polyurethane systems and for cross-linking in silicone or silane-modified polymers.

Tib Kat 256 offers improved process efficiency and resin quality.
Tib Kat 256 is a solid catalyst, which is used in esterification-, transesterification- and polycondensation reactions.
Tib Kat 256 gives good results in the production of polyesters and alkyds.

Tib Kat 256 is used in concentrations between 0.01 - 0.5 wt.-%.
Tib Kat 256 can be used between 90 – 280°C.
Tib Kat 256 gives good results in the production of polyesters and alkyds.

Tib Kat 256 is used in concentrations between 0.01 - 0.5 wt.-%.
Tib Kat 256 can be used between 90 – 280°C.
Tib Kat 256 is used as a catalyst by TIB Chemicals.

Tib Kat 256 is used in paints and coatings.
Tib Kat 256 is a solid catalyst used in the esterification, transesterification, and polycondensation reactions in the production of polyesters and alkyds.

Tib Kat 256 is used in concentrations between 0.01 - 0.5 wt.-%.
Tib Kat 256 can be used between 90 - 280°C.

Tib Kat 256 is used as a catalyst for esterification, transesterification and polycondensation reactions (especially in the production of saturated and unsaturated polyester resins, alkyds) for coatings, powder coatings, coil coatings.

Tib Kat 256 is used as a stabiliser or processing additive in plastics/coatings (one reference notes use in PVC stability, though primary use is catalysis)
Tib Kat 256 allows shorter reaction times, lower reaction temperatures, fewer by-products (per supplier description) in resin synthesis.

USES, BENEFITS & CHARACTERISTICS of TIB KAT 256:
Uses of Tib Kat 256: Catalyst for esterification, transesterification, polycondensation reactions, especially in the manufacture of saturated and unsaturated polyester resins, alkyd resins, powder coatings, coil coatings.
Tib Kat 256 is used component in production of polymeric plasticizers.
Tib Kat 256 is used stabilizer or ingredient in plastics/resins (organotin stabilizer precursor) in some uses.

BENEFITS / CHARACTERISTICS of TIB KAT 256:
Because Tib Kat 256 becomes incorporated into the final resin/film/coat (rather than needing removal), it simplifies processing (no neutralisation/filtration required).
Shorter reaction times and lower processing temperatures possible compared to non-tin catalysts: e.g., 20-25% shorter esterification time in supplier data.

Tib Kat 256 is improved process efficiency, potentially improved final product properties (less side-reaction such as dehydration or oxidative decomposition) in polymer/resin manufacture.
Versatile: Tib Kat 256 is used in coatings, resins, plastics, adhesives/sealants.

PHYSICAL & CHEMICAL-PROPERTIES of TIB KAT 256:
Here are key properties:
Tin content: ≥ 55.0 % (according to TIB KAT 256 specification)
Chloride content: ≤ 1 % (approx)
Loss on drying / volatiles: ≤ 1.5 %Tib Kat 256 (for TIB KAT 256)
Decomposition / melting point: > 210 °C (TIB product spec)
Boiling point: >350 °C (some supplier data)
Density / specific gravity: around ~1.46 g/cm³ (supplier data)
Solubility: Practically insoluble in water and many organic solvents
Also “insoluble (<0.1 mg/L)” water solubility reported in other data.
Stability: Hydrolytically stable (per supplier description) and can be used in high-temperature catalysis (90-280 °C range for TIB KAT 256)
Use concentration & temperature: The TIB datasheet indicates use in concentrations 0.01-0.5 wt% and temperature range ~90-280 °C for catalysis.

KEY APPLICATION DETAILS & BEST PRACTICES of TIB KAT 256:
Here are more specific details and practice-tips for use:

*Loading / concentration: 
For Tib Kat 256 typical usage is in the range 0.01 to 0.5 wt% (with respect to the resin or formulation) according to product data.

*Temperature range: 
Tib Kat 256 is effective from ≈ 90 °C up to ≈ 280 °C in processing.
This flexibility allows Tib Kat 256 to be used in various reactions including high-temperature polycondensation.

*Processing tip: 
Because Tib Kat 256 is insoluble and stable, the reaction design does not usually need special neutralisation or filtration steps to remove catalyst residues.
This simplifies downstream processing.

*Storage / handling: 
Store in cool, dry, well-ventilated conditions, keep packaging sealed, avoid moisture and oxidising agents — as moisture/oxidising contaminants could degrade catalyst performance.

*Compatibility: 
Because Tib Kat 256 remains in the final resin/coating, one must ensure that the presence of the catalyst does not adversely affect properties like colour, transparency or stability in the final product; supplier claims MBTO improves transparency vs some alternatives.

BENEFITS & CHARACTERISTICS of TIB KAT 256:
High tin content and designed for efficient catalysis in polyester/alkyd systems.
Good thermal stability to the stated range (up to ~250-280°C) for use in high-temperature resin synthesis.
Because Tib Kat 256 is practically insoluble in water/most organic solvents, it remains in the polymer/resin matrix, potentially simplifying process (supplier claims no neutralisation/filtration required).
Tib Kat 256 enables energy savings (via lower reaction temperature) and improved product quality (fewer side reactions) in resin manufacture.

KEY ADVANTAGES & CHARACTERISTICS of TIB KAT 256:
Here are the key advantages and characteristics that make MBTO / Tib Kat 256 attractive in industrial use:

*High catalytic efficiency: 
Tib Kat 256 can significantly shorten esterification/transesterification/polycondensation reaction times, enabling lower temperature or faster processing.

*Incorporation into the final product: 
Unlike some catalysts that must be filtered or neutralised out, Tib Kat 256 integrates into the resin/coating matrix without degrading product quality or requiring catalyst removal.

*Low solubility / high stability: 
Tib Kat 256 is virtually insoluble in water and many organic solvents, making it stable in harsh processing environments; hydrolytically stable per data.

*Improved product quality: 
Use of Tib Kat 256 may reduce undesirable side-reactions (such as dehydration or oxidation of polyols), improve clarity/transparency of coatings, reduce haze and improve colour stability.

*Energy & cost savings: 
Because Tib Kat 256 allows lower reaction temperatures or faster conversion, energy consumption and equipment idle time may be reduced.

*Versatility: 
Applicable in many resin/coat/adhesive systems (polyesters, alkyds, coatings, plastics, sealants) and Tib Kat 256 can be used in a wide temperature range (90-280 °C for TIB version).

PHYSICAL and CHEMICAL PROPERTIES of TIB KAT 256:
Product name: Monobutyltin Oxide (FASCAT 4100; TIB KAT 256)
INCI or IUPAC Name: Monobutyltin Oxide
CAS Number: 2273-43-0
Molecular Formula: C4H10O2Sn
Formula Weight: 208.83
Appearance: white powder
Assay: Sn content 56%
CBNumber:CB8428802
Molecular Formula:C4H10O2Sn
Molecular Weight:208.83

MDL Number:MFCD00013927
MOL File:2273-43-0.mol
Boiling point: 350 °C
Density: 1,46 g/cm3
vapor pressure: 24.4Pa at 25℃
storage temp.: Store below +30°C.
solubility: 9.5mg/L in organic solvents at 20 ℃
form: powder to crystal
color: White to Almost white
Specific Gravity: 1.46

Water Solubility: 317-3200μg/L at 20℃
Hydrolytic Sensitivity    4: no reaction with water under neutral conditions
Sensitive: Hygroscopic
LogP: 0.2-1.477 at 20-25℃
Indirect Additives used in Food Contact Substances: HYDROXYBUTYLTIN OXIDE
FDA 21 CFR: 175.300; 177.2420
CAS DataBase Reference: 2273-43-0(CAS DataBase Reference)
EWG's Food Scores: 1
FDA UNII: G34WDA7Z2E
EPA Substance Registry System: Stannane, butylhydroxyoxo- (2273-43-0)

Chemical name: Monobutyltin oxide (MBTO) 
Trade name: TIB KAT® 256 (by TIB Chemicals AG) 
CAS number: 2273-43-0. 
EC / EINECS number: 218-880-1. 
Molecular formula: C₄H₁₀O₂Sn (approx). 
Molecular weight: ~208.8 g·mol⁻¹. 
Appearance: white powder / slightly off-white solid. 
Typical description: A solid catalyst used for esterification, transesterification, polycondensation reactions (particularly for production of polyesters and alkyds) in coatings and resins

FIRST AID MEASURES of TIB KAT 256:
-Description of first-aid measures:
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation: 
Fresh air. 
Call in physician.
*In case of skin contact: 
Take off immediately all contaminated clothing. 
Rinse skin with water/ shower. 
Consult a physician.
*In case of eye contact:
After eye contact: 
Rinse out with plenty of water. 
Immediately call in ophthalmologist.
Remove contact lenses.
*If swallowed:
After swallowing: 
Immediately make victim drink water (two glasses at most). 
Consult a physician.
-Indication of any immediate medical attention and special treatment needed:
No data available

ACCIDENTAL RELEASE MEASURES of TIB KAT 256:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains. 
Collect, bind, and pump off spills. 
Observe possible material restrictions.
Take up dry. 
Dispose of properly. 
Clean up affected area.

FIRE FIGHTING MEASURES of TIB KAT 256:
-Extinguishing media:
*Suitable extinguishing media:
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of TIB KAT 256:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
Tightly fitting safety goggles
*Skin protection:
Full contact:
Material: Nitrile rubber
Minimum layer thickness: 0,11 mm
Break through time: 480 min
Splash contact:
Material: Nitrile rubber
Minimum layer thickness: 0,11 mm
Break through time: 480 min
*Body Protection:
protective clothing
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of TIB KAT 256:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed. 
Dry.
Store at Room Temperature. 
Light sensitive

STABILITY and REACTIVITY of TIB KAT 256:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature) .
-Incompatible materials:
No data available