NIOBIUM ETHOXIDE Chemical Properties

Melting point:

6 °C(lit.)

Boiling point:

140-142 °C0.1 mm Hg(lit.)

Density 

1.268 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.516(lit.)

Flash point:

97 °F

storage temp. 

Flammables area

solubility 

reacts with H2O; soluble in petroleum ether

form 

Liquid

Specific Gravity

1.32

color 

Yellow to orange-brown

Water Solubility 

Soluble in organic solvents. Decomposes in water.Miscible with organic solvents.

Hydrolytic Sensitivity

8: reacts rapidly with moisture, water, protic solvents

Sensitive 

Moisture Sensitive

BRN 

3678883

InChI

1S/5C2H5O.Nb/c5*1-2-3;/h5*2H2,1H3;/q5*-1;+5

InChIKey

ZTILUDNICMILKJ-UHFFFAOYSA-N

SMILES

CCO[Nb](OCC)(OCC)(OCC)OCC

CAS DataBase Reference

3236-82-6(CAS DataBase Reference)

EPA Substance Registry System

Ethanol, niobium(5+) salt (3236-82-6)

Safety Information

Hazard Codes 

C

Risk Statements 

10-34

Safety Statements 

26-36/37/39-45

RIDADR 

UN 2920 8/PG 2

WGK Germany 

3

F 

10-21

TSCA 

TSCA listed

HazardClass 

3

PackingGroup 

III

HS Code 

29319090

Storage Class

3 - Flammable liquids

Hazard Classifications

Flam. Liq. 3

MSDS

• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

NIOBIUM ETHOXIDE Usage And Synthesis

Chemical Properties

yellow to orange-brown liquid

Uses

Niobium ethoxide is an important precursor for depositing thin films of niobium oxide and other thin films doped with niobium. These thin films are thermally stable and show valuable magnetic, ferroelectric and good conducting properties, hence finding applications as random access memory (RAM) and photovoltaics

reaction suitability

core: niobium

Synthesis

The electrochemical synthesis was carried out in a sealed diaphragm-free electrolyzer equipped with a condensation reflux tube.The electrolyzer was made of rigid PVC plate, with tank dimensions of 95 mm??115 mm??125 mm and a volume of about 1.3 L. The effective area of the niobium anode plate was 10.0 cm??6.0 cm; and that of the stainless steel plate was 10.0 cm??8.0 cm.1.3 L of anhydrous ethanol was fixed at a time, and the concentration of the conducting agent 0.04 mol/L, current 1.8~2.0A (current density 300~330A/m2), and pole spacing 2.5 cm. During the synthesis process, the temperature of the electrolyte rises rapidly to the boiling point of 80??C, and it is difficult to control the synthesis to be carried out at a temperature lower than the boiling point of the electrolyte. Considering that the temperature increase is very effective in increasing the conductivity of the electrolyte, e.g., the conductivity of the electrolyte is 0.08??104??S-cm-1 at 25??C for a conductive agent concentration of 0.04 mol/L; at 80??C, the conductivity increases to 0.2??104??S-cm-1. In addition, the stirring effect formed by the boiling is advantageous in reducing the concentration polarization of the anode. Therefore, no cooling measures were used, and the electrolyte was in a boiling state throughout the synthesis process, and the produced has alcohol gas flowed back into the electrolytic tank through the condensation tube, with a synthesis time of 76~80 h. The synthesis yielded a mixed solution of niobium ethoxide and ethanol, and the excess ethanol was distilled out at 80 ??, and the temperature was raised to 190 ??, and then the decompression distillation was carried out to obtain the light-yellow, viscous liquid product niobium ethoxide.

NIOBIUM ETHOXIDE(3236-82-6)Related Product Information

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