Titanium tetrabutoxide
Description
Titanium tetrabutoxide (CAS 5593-70-4), commonly sourced under the names Butyl titanate and TNBT, is an organotitanium compound used as a catalyst and reactive precursor across polymer, coating, and specialty chemical manufacturing.
Its reactivity with moisture and hydroxyl groups makes it a practical building block for sol-gel processes and surface modification systems. In polymer production, TNBT functions as a transesterification and polycondensation catalyst.
It is used particularly in the manufacture of polyesters and alkyd resins. Coating formulators use it as a crosslinking agent for silicone and organic coatings, improving adhesion and cure performance on metal and glass substrates.
In sol-gel chemistry, it serves as a titanium dioxide precursor for producing thin films, ceramics, and functional coatings with controlled optical or barrier properties. This makes it essential for high-performance materials.
Personal care applications include its use as a catalyst in the synthesis of ester-based emollients and specialty ingredients. The compound is highly versatile across multiple industrial sectors requiring precise chemical reactions.
Titanium tetrabutoxide is supplied as a liquid, typically in neat form or diluted in solvent for handling convenience. It is available in technical and reagent grades, with purity levels commonly ranging from 95% to 99%+.
Packaging options generally include drums and intermediate bulk containers suited to industrial procurement volumes. Proper storage is required to maintain the stability and performance of the chemical during transport and use.
Physical Properties
| Melting Point | -55 °C |
| Boiling Point | 312 °C |
| Density | 0.998 g/cm³ @ Temp: 20 °C |
| Flash Point | 55 °F |
| Appearance | colourless to light yellow viscous liquid |
| Color | Pale yellow |
| Form | Liquid |
| Water Solubility | RAPIDLY HYDROLIZED |
| Vapor Pressure | 5.6 hPa (20 °C) |
| Refractive Index | n 20/D 1.491(lit.) |
| Log P | 0.84 at 25℃ |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 29051900 |
| UN Number | 1993 |
| ADR Class | 3 |
| Packing Group | III |
| Storage Class | 3 - Flammable liquids |
| WGK (Germany) | 1 |
Documentation
Other Names
Titanium butoxide|Butyl titanate|TETRABUTYL TITANATE|Butyl titanate(IV)|Titanium butylate|Tetrabutyl orthotitanate|Tetrabutoxy titanium|1-Butanol, titanium(4+) salt (4:1)|TNBT
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