Overview
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.
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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
Danger GHS02 GHS05 GHS07 Hazard Statements H226 Flammable liquid and vapor H227 Combustible liquid H315 Causes skin irritation H318 Causes serious eye damage H319 Causes serious eye irritation H335 May cause respiratory irritation H336 May cause drowsiness or dizziness Precautionary Statements P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P233 Keep container tightly closed. P240 Ground and bond container and receiving equipment. P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment. P242 Use non-sparking tools. P243 Take action to prevent static discharges. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P317 Get emergency medical help. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P403 Store in a well-ventilated place. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P370+P378 Use … for extinction. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P403+P235 Store in a well-ventilated place. Keep cool. P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29051900 |
| UN Number | 1993 |
| ADR Class | 3 |
| Packing Group | III |
| Storage Class | 3 - Flammable liquids |
| WGK (Germany) | 1 |
Other Names
Related Products
Chemical Properties
- CAS Number
- 5593-70-4
- EC Number
- 227-006-8
- Mol. Weight
- 340.32
- HS Code
- 29051900
- Category
- Flavors & Fragrances