Technical Specifications
| Parameter | Specification | Test Method |
|---|---|---|
| CAS Number | 3087-36-3 | — |
| Molecular Formula | Ti(OC₂H₅)₄ | — |
| Molecular Weight | 228.11 g/mol | — |
| Titanium Content (Ti%) | 21.0 ± 0.5% | ICP-OES |
| Purity (GC) | ≥99.5% | GC |
| Appearance | Colorless to pale-yellow liquid | Visual |
| Boiling Point | 150–152 °C @ 14 mmHg | ASTM D1078 |
| Density @ 20 °C | 1.088–1.095 g/mL | ASTM D891 |
| Moisture (Karl Fischer) | ≤30 ppm | ASTM E203 |
| Chloride (as Cl⁻) | ≤5 ppm | IC |
| Flash Point | 46 °C (closed cup) | ASTM D93 |
| Hydrolysis Rate vs. TPT | ~3× faster | Comparative gel-time |
| Packaging | 1 kg ampoule / 5 kg / 20 kg drum (N₂) | — |
Industrial Application Scenarios
Tetraethyl titanate's short ethyl chain produces ~3x faster hydrolysis than TPT or TBT, making it the preferred precursor for dense, low-temperature TiO₂ films. Three segments drive demand: photocatalytic coatings (~12% CAGR), high-κ DRAM dielectrics below 20 nm, and anti-reflective PV module coatings.
Price Dynamics & Cross-Border Trade Flows
Chinese toll producers quote electronic-grade TET at USD 45–70/kg CFR. European and Japanese producers command a 30–50% premium. Lead times: 3–6 weeks from Chinese traders, 8–16 weeks from Western sources.
Sourcing Strategy & Supply Chain Risk Mitigation
Qualify at least two TET suppliers across geographies to hedge against export controls and TiCl₄ squeezes. SEMITECH TET ships in nitrogen-blanketed drums with full CoA traceability. Buyers targeting EU production must verify REACH registration.
Frequently Asked Questions
+Q: What is the difference between tetraethyl titanate (TET) and tetraisopropyl titanate (TPT)?
A: TET hydrolyzes ~3x faster due to shorter ethyl groups, producing denser TiO₂ at lower temperatures (150–300 °C vs. 300–450 °C for TPT). Preferred for photocatalytic and dielectric applications.
+Q: What purity grade is required for semiconductor dielectric applications?
A: Semiconductor-grade requires ≥99.9% GC, chloride ≤2 ppm, total metallic impurities ≤1 ppm each. Standard electronic-grade (≥99.5%) suffices for photocatalytic and optical films.
+Q: How should tetraethyl titanate be stored?
A: Store under dry inert gas (N₂ or Ar) at 5–25 °C. Shelf life 12 months sealed; re-verify Ti% if opened >6 months.
+Q: Is Chinese-origin TET legally compliant for EU manufacturing?
A: Chinese TET must carry a valid REACH registration or be imported via an Only Representative for volumes >1 tonne/year.
+Q: What solvents are compatible with TET in sol-gel formulations?
A: Anhydrous ethanol, isopropanol, toluene, and xylene. Water content must remain below 50 ppm to prevent uncontrolled hydrolysis.
+Q: How does TiCl₄ feedstock volatility affect TET pricing?
A: TiCl₄ represents 60–70% of raw material cost. Environmental shutdowns at Chinese plants pushed TiCl₄ prices up 15–25% in 2023–2024, with TET following at 4–8 week lag.
+Ready to optimise your formulation?
Contact the Semitech technical team for product recommendations, samples and TDS.