Organometallic Compounds
REACH
Titanium tetrabutoxide
CAS Number
5593-70-4
EC Number
227-006-8
Abbreviation
TNBT
What is Titanium tetrabutoxide?
Titanium tetrabutoxide (CAS 5593-70-4), also known as Butyl titanate and TNBT, is an organotitanium compound used as a catalyst and reactive precursor in polymer, coating, and specialty chemical manufacturing.
Where is Titanium tetrabutoxide used?
- Polymer production: transesterification and polycondensation catalyst, particularly for polyesters and alkyd resins
- Coatings: crosslinking agent for silicone and organic coatings, improving adhesion and cure on metal and glass
- Sol-gel chemistry: titanium dioxide precursor for thin films, ceramics and functional coatings
- Personal care: catalyst in synthesis of ester-based emollients and specialty ingredients
- Its reactivity with moisture and hydroxyl groups makes it a building block for sol-gel processes and surface modification.
Commercial specifications
- Purity commonly 95% to 99%+
- Liquid, neat or diluted in solvent
- Drums and intermediate bulk containers
Other Names (Synonyms)
Titanium butoxide|Butyl titanate|TETRABUTYL TITANATE|Butyl titanate(IV)|Titanium butylate|Tetrabutyl orthotitanate|Tetrabutoxy titanium|1-Butanol, titanium(4+) salt (4:1)|TNBT
What are the physical properties of Titanium tetrabutoxide?
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℃
How is Titanium tetrabutoxide classified and handled safely? Learn More
Danger
GHS02· Flammable GHS05· Corrosive GHS07· Irritant
Hazard Statements
H226 Flammable liquid and vapor
H227 Combustible liquid
H315 Causes skin irritation
H318 Causes serious eye damage
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.
Which trade and regulatory codes apply to Titanium tetrabutoxide?
HS Code 29051900
UN Number 1993
ADR Class 3
Packing Group III
Storage Class 3 - Flammable liquids
WGK (Germany) 1