NIOBIUM(V) PENTAETHOXIDE
niobium(5+) ethanolate
CAS: 3236-82-6
Molecular Formula: C10H25NbO5
NIOBIUM(V) PENTAETHOXIDE - Names and Identifiers
| Name | niobium(5+) ethanolate |
| Synonyms | NIOBIUM ETHYLATE NIOBIUM ETHOXIDE Niobium v ethoxide NIOBIUM(V) ETHOXIDE NIOBIUM PENTAETHOXIDE niobium(5+) ethanolate Niobium(5+) ethanolate COLUMBIUM PENTAETHOXIDE NIOBIUM(V) PENTAETHOXIDE Ethanol, niobium(5+) salt niobium(5+) pentaethanolate |
| CAS | 3236-82-6 |
| EINECS | 221-795-2 |
| InChI | InChI=1/C2H6O.Nb/c1-2-3;/h3H,2H2,1H3;/q;+5 |
NIOBIUM(V) PENTAETHOXIDE - Physico-chemical Properties
| Molecular Formula | C10H25NbO5 |
| Molar Mass | 318.21 |
| Density | 1.268g/mLat 25°C(lit.) |
| Melting Point | 6°C(lit.) |
| Boling Point | 140-142°C0.1mm Hg(lit.) |
| Flash Point | 97°F |
| Water Solubility | Soluble in organic solvents. Decomposes in water.Miscible with organic solvents. |
| Appearance | Liquid |
| Specific Gravity | 1.32 |
| Color | Yellow to orange-brown |
| BRN | 3678883 |
| Storage Condition | Flammables area |
| Sensitive | Moisture Sensitive |
| Refractive Index | n20/D 1.516(lit.) |
NIOBIUM(V) PENTAETHOXIDE - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | R10 - Flammable R34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 2920 8/PG 2 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 10-21 |
| TSCA | No |
| HS Code | 29319090 |
| Hazard Class | 3 |
| Packing Group | III |
NIOBIUM(V) PENTAETHOXIDE - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Overview | Niobium ethoxy is a cathode coloring film with great development prospects. Niobium ethoxy has excellent piezoelectric, thermoelectric, photoelectric, photoelastic, Electro-optical and nonlinear optical characteristics, widely used in integrated optics, optical communication, optical waveguide and other fields, such as integrated optical path (IntegratedOptics), surface acoustic wave (SurfaceAcousticWave,SAW) device of ferroelectric ceramic material. Niobium ethoxyalcohol is also used to prepare ultra-fine spherical Nb2O5 with good activity, high dispersion and purity by Sol-Gel method. |
| Application | Niobium ethoxide is mainly used as metal organic compound vapor deposition technology (MOCVD) to prepare large-area Nb2O5 electrochromic films and niobate (LiNbO3, KNbO3, etc.) film materials. |
| preparation | electrochemical synthesis is carried out in a sealed diaphragm-free electrolytic cell equipped with a condensing reflux tube. the electrolytic cell is made of hard PVC plate with a tank size of 95mm × 115mm × 125mm and a volume of about 1.3l. The effective area of niobium anode plate is 10.0cm × 6.0cm; The effective area of stainless steel plate is 10.0cm × 8.0cm. Anhydrous ethanol is fixed 1.3L each time, the concentration of conductive agent is 0.04mol/L, the current is 1.8~2.0A (current density is 300 ~ 330A/m2), and the pole distance is 2.5cm. During the synthesis process, the temperature of the electrolyte rapidly rises to the boiling point of 80 ℃, and it is difficult to control the synthesis at a temperature lower than the boiling point of the electrolyte. Considering that the increase in temperature is very effective in improving the conductivity of the electrolyte, for example: the concentration of the conductive agent is 0.04mol/L, and the conductivity of the electrolyte at 25°C is 0.08 × 104 µS · cm-1; at 80°C, The conductivity rises to 0.2 × 104 µS · cm-1. In addition, the stirring effect formed by boiling is beneficial to reduce the concentration polarization of the anode. Therefore, no cooling measures are adopted, the electrolyte is in a boiling state during the whole synthesis process, and the generated alcohol gas flows back into the electrolytic cell through the condenser tube, and the synthesis time is 76~80h. Synthesize to obtain a mixed solution of niobium ethoxyalcohol and ethanol, distill the excess ethanol at 80°C, raise the temperature to 190°C, and then perform vacuum distillation to obtain a light yellow viscous liquid product niobium ethoxyalcohol. |
Last Update：2024-04-09 20:52:54
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