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7783-77-9

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7783-77-9 Usage

Chemical Properties

liquid

Physical properties

White cubic crystals or colorless volatile liquid; hygroscopic; density 2.54 g/cm3; melts at 17.5°C; boils at 34°C; critical temperature 200°C; critical pressure 46.88 atm; critical volume 226 cm3/mol; reacts with water (hydrolyzed).

Uses

Different sources of media describe the Uses of 7783-77-9 differently. You can refer to the following data:
1. Molybdenum(VI) fluoride plays an important role in the semiconductor industry and the nuclear industry.
2. Separation of molybdenum isotopes.

Preparation

Molybdenum hexafluoride is prepared by passing fluorine over molybdenum powder:Mo + 3F2 → MoF6.

Purification Methods

Purify the hexafluoride by low-temperature trap-to-trap distillation over pre-dried NaF. It is hygroscopic, fumes in moist air and is hydrolysed readily by H2O. [Oppengard et al. J Am Chem Soc 82 3825 1960, Anderson & Winfield J Chem Soc, Dalton Trans 337 1986, Kwasnik in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 259 1963.] Poisonous vapours.

Check Digit Verification of cas no

The CAS Registry Mumber 7783-77-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,8 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7783-77:
(6*7)+(5*7)+(4*8)+(3*3)+(2*7)+(1*7)=139
139 % 10 = 9
So 7783-77-9 is a valid CAS Registry Number.
InChI:InChI=1/6FH.Mo/h6*1H;/q;;;;;;+6/p-6

7783-77-9 Well-known Company Product Price

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  • Alfa Aesar

  • (22713)  Molybdenum(VI) fluoride   

  • 7783-77-9

  • 50g

  • 19718.0CNY

  • Detail

7783-77-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name molybdenum hexafluoride

1.2 Other means of identification

Product number -
Other names Mo hexafluoride

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7783-77-9 SDS

7783-77-9Relevant articles and documents

Kinetics of fluorination of metallic molybdenum with elementary fluorine

Rybakov,Seredenko,Orekhov,Mironov

, p. 1929 - 1934 (2004)

The kinetics of the heterogeneous reaction of metallic molybdenum with elementary fluorine under conditions close to those used in actual technological practice at a concentration of fluorine in the gas mixture equal to 20-50 vol % was studied. The kinetic parameters were evaluated using the Arrhenius equation. A regression equation was obtained using the statistical method of experimental design for practical calculations of the rate of fluorination of metallic molybdenum with elementary fluorine. This equation makes it possible to calculate the fluorination rate at any point of the factor space, at fluorine concentrations of 30-50 vol % and initial temperatures of 250-350°C.

Separation of metallic residues from the dissolution of a high-burnup BWR fuel using nitrogen trifluoride

McNamara, Bruce K.,Buck, Edgar C.,Soderquist, Chuck Z.,Smith, Frances N.,Mausolf, Edward J.,Scheele, Randall D.

supporting information, p. 1 - 8 (2014/05/06)

Nitrogen trifluoride (NF3) was used to fluorinate the metallic residue from the dissolution of a high burnup, boiling water reactor fuel (~70 MWd/kgU). The washed residue included the noble-metal phase (containing ruthenium, rhodium, palladium, technetium, and molybdenum), smaller amounts of zirconium, selenium, tellurium, and silver, along with trace quantities of plutonium, uranium, cesium, cobalt, europium, and americium, likely as their oxides. Exposing the noble metal phase to 10% NF3 in argon, between 400 and 550 °C, removed molybdenum and technetium near 400 °C as their volatile fluorides, and ruthenium near 500 °C as its volatile fluoride. The events were thermally and temporally distinct and the conditions specified provide a recipe to separate these transition metals from each other and from the nonvolatile residue. Depletion of the volatile fluorides resulted in substantial exothermicity. Thermal excursion behavior was recorded with the thermal gravimetric instrument operated in a non-adiabatic, isothermal mode; conditions that typically minimize heat release. Physical characterization of the noble-metal phase and its thermal behavior are consistent with high kinetic velocity reactions encouraged by the nanoparticulate phase or perhaps catalytic influences of the mixed platinum metals with nearly pure phase structure. Post-fluorination, only two products were present in the residual nonvolatile fraction. These were identified as a nano-crystalline, metallic palladium cubic phase and a hexagonal rhodium trifluoride (RhF3) phase. The two phases were distinct as the sub-μm crystallites of metallic palladium were in contrast to the RhF3 phase, which grew from the parent, nano-crystalline noble-metal phase during fluorination, to acicular crystals exceeding 20-μm in length.

Chemical interaction of fluoropolymers with transition metals

Tarasov,Alikhanian,Arkhangel'Skii

, p. 809 - 813 (2009/12/01)

Chemical interaction of transition metals (Mo, W, Ta, Nb, and Ti) with a tetrafluoroethylene-vinylidene fluoride (TFE-VDF) copolymer (21 mol % TFE + 79 mol % VDF) has been studied by differential scanning calorimetry (DSC) and mass spectrometry. The DSC c

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