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Vanadium(V) oxytrifluoride, also known as vanadium oxyfluoride or vanadium pentoxide fluoride, is a chemical compound with the formula VOF3. It is a dark brown or black solid that is insoluble in water and has a melting point of approximately 1000°C. vanadium(V) oxytrifluoride is formed by the reaction of vanadium pentoxide (V2O5) with hydrofluoric acid (HF) or by the direct fluorination of vanadium pentoxide. Vanadium(V) oxytrifluoride is an important intermediate in the production of various vanadium compounds, such as vanadium trifluoride (VF3) and vanadium tetrafluoride (VF4), and is used in the electronics industry for the production of thin films and coatings. Due to its reactivity and potential health hazards, it is essential to handle vanadium(V) oxytrifluoride with proper safety precautions.

20888-71-5

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20888-71-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20888-71-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,8,8 and 8 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20888-71:
(7*2)+(6*0)+(5*8)+(4*8)+(3*8)+(2*7)+(1*1)=125
125 % 10 = 5
So 20888-71-5 is a valid CAS Registry Number.

20888-71-5Relevant academic research and scientific papers

Gas-phase on-line production of vanadium oxytrihalides, VOX3 and their identification by infrared spectroscopy

Zidan, Mohammed D.,Allaf, Abdul W.

, p. 2693 - 2698 (2000)

A new route has been devised, leading to the production of VOX3 molecules where X = F, Br and I by an on-line process using vanadium oxytrichloride, VOCl3 as a starting compound passed over the following heated salts NaF, KBr and KI at 375, 700 and 550 °C, respectively. The products have been characterized by the IR spectra of their vapors. The low resolution gas phase on-line Fourier transform infrared spectra reported for the first time show strong bands with PQR type structure, centered at 1058, 1035, 1030 and 1025 cm-1 assigned to the ν1(a1), the O = V stretching fundamental mode of VOF3, VOCl3, VOBr3 and VOI3, respectively.

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