1313-27-5

Basic information

• Product Name: Molybdenum(VI) oxide
• Synonyms: Bouen SKN301;JCPDS 35-0609;MFR;Molybdena;Molybdenumoxide (Mo4O12);Molybdenum oxide (MoO3), tetramer;Molybdenum trioxide;Molybdenum trioxidetetramer;Molybdenum(VI) oxide;Molybdic anhydride;Molybdic oxide;NSC 215191;Pol-U;Molybdenum(Ⅵ)oxide
• CAS NO: 1313-27-5
• Molecular Formula: MoO₃
• Molecular Weight: 143.9382
• EINECS: 215-204-7
• Mol File: 1313-27-5.mol
• Article Data: 2

Chemical Properties

• Melting Point: 795℃
• Boiling Point: 1155oC
• Flash Point: 1155oC subl.
• Appearance: pale yellowish-green powder
• Density: 4.692 g/cm³
• Water Solubility: 0.5 g/L (20℃)
• CAS DataBase Reference: Molybdenum(VI) oxide(CAS DataBase Reference)
• NIST Chemistry Reference: Molybdenum(VI) oxide(1313-27-5)
• EPA Substance Registry System: Molybdenum(VI) oxide(1313-27-5)

Safety Data

• Hazard Codes: Xn:Harmful
• Statements: R36/37:; R48/20/22:
• Safety Statements: S22:; S25:
• Hazardous Substances Data: 1313-27-5(Hazardous Substances Data)

Usage

General Description

Molybdenum(VI) oxide, also known as molybdenum trioxide, is a chemical compound composed of molybdenum and oxygen. It is a versatile compound with applications in various fields including catalysis, electronics, and as a pigment in ceramics. Molybdenum(VI) oxide is commonly used as a catalyst in the petroleum industry and in the production of fine chemicals. It is also used in the production of molybdenum metal and alloys. Additionally, it is used in electronics as a component in thin-film transistors and as a conductive layer in integrated circuits. Furthermore, molybdenum(VI) oxide is utilized as a pigment in ceramics and as a powerful oxidizing agent in organic synthesis. Overall, Molybdenum(VI) oxide is a crucial compound with a wide range of important applications in various industries.

InChI:InChI=1/Mo.3O/rMoO3/c2-1(3)4

Synthetic route

{MoCl3(C5H4N)2(H2O)} (126031-97-8) → molybdenum trioxide (1313-27-5)

Conditions	Yield
decompn. at 390-400°C;

carbon disulfide (75-15-0) + molybdenum trioxide (1313-27-5) + dibenzylamine (103-49-1) → C30H28Mo2N2O2S6

Conditions	Yield
Stage #1: molybdenum trioxide With sodium hydrogen sulfide In water for 0.5h; Sealed tube; Stage #2: carbon disulfide; dibenzylamine With hydrogenchloride In water; toluene at 20 - 100℃; for 4.5h; Sealed tube;	93%

morpholine (110-91-8) + phosphoric acid (86119-84-8, 7664-38-2) + water (7732-18-5) + molybdenum trioxide (1313-27-5) → HMo5O23P2(6-)*5C4H9NO*5H2O*5H(1+)

Conditions	Yield
at 25℃; for 2191.5h; pH=Ca. 4;	70%

tetra(n-butyl)ammonium hydroxide (2052-49-5) + molybdenum trioxide (1313-27-5) → di(tetra-n-butylammonium) dimolybdate

Conditions	Yield
In water at 20℃; for 24h;	63%

5,15,10,20-tetraphenylporphyrin (917-23-7) + molybdenum trioxide (1313-27-5) → (hydroxy)(oxo)(5,10,15,20-tetraphenylporphyrinato)molybdenum(v) (28780-74-7)

Conditions	Yield
With phenol at 180.84℃; for 4h;	60%

hydrogenchloride (7647-01-0) + thorium(IV) nitrate pentahydrate + molybdenum trioxide (1313-27-5) → Th(4+)*MoO4(2-)*2Cl(1-)*5H2O

Conditions	Yield
at 230℃; for 24h; Autoclave;	50%

sodium arsenate dodecahydrate + 1,4-bis(imidazol-l-yl-methyl)benzene (56643-83-5) + molybdenum trioxide (1313-27-5) → As2Mo6O27(8-)*2H2O*8H(1+)*2C14H14N4

Conditions	Yield
With copper(II) nitrate trihydrate In water at 160℃; for 144h; pH=Ca. 3.5; Autoclave; High pressure;	38%

potassium 4-(2-decyltetradecyl)-1-piperazinedithiocarbamate + molybdenum trioxide (1313-27-5) → C58H114Mo2N4O2S6

Conditions	Yield
Stage #1: molybdenum trioxide With sodium hydrogensulfide In water at 25℃; for 3h; Inert atmosphere; Stage #2: potassium 4-(2-decyltetradecyl)-1-piperazinedithiocarbamate With hydrogenchloride In tetrahydrofuran; water at 90℃; for 18h;	36.5%

nickel(II) carbonate hydroxide + molybdenum trioxide (1313-27-5) → nickel molybdate

Conditions	Yield
In water at 90℃; for 20h;

molybdenum trioxide (1313-27-5) + cyclopropane (75-19-4) → Mo(x)O(y)(C3H4)(1+)

Conditions	Yield
In neat (no solvent, gas phase) byproducts: Mo(x)O(y)(CH2)(1+), Mo(x)O(y)(C2H4)(1+), Mo(x)O(y)(CH4)(1+); study on formation of molybdenum carbene complexes; monitored by ICR mass spectrometer;

strontium(II) carbonate (1633-05-2) + molybdenum trioxide (1313-27-5) → strontium molybdate

Conditions	Yield
With air In acetone at 600℃; for 12h;

Iron(III) nitrate nonahydrate + molybdenum trioxide (1313-27-5) → ferric molybdate

Conditions	Yield
Stage #1: Iron(III) nitrate nonahydrate; molybdenum trioxide at 299.84 - 449.84℃; Stage #2: at 599.84℃; for 60h;

molybdenum trioxide (1313-27-5) + lithium carbonate (554-13-2) + potassium carbonate (584-08-7) + titanium(IV) oxide → potassium lithium titanate

Conditions	Yield
at 1199.84℃; for 10h;

vanadium(V) oxide (788133-24-4) + phosphoric acid (86119-84-8, 7664-38-2) + water (7732-18-5) + molybdenum trioxide (1313-27-5) → phosphovanadomolybdic acid

Conditions	Yield
at 99.84℃;

rubidium nitrate (13126-12-0) + thorium(IV) nitrate pentahydrate + molybdenum trioxide (1313-27-5) → 8Rb(1+)*Th(4+)*6MoO4(2-)=Rb8Th(MoO4)6

Conditions	Yield
at 900℃; for 14h;

rubidium nitrate (13126-12-0) + thorium(IV) nitrate pentahydrate + molybdenum trioxide (1313-27-5) → 4Rb(1+)*Th(4+)*4MoO4(2-)=Rb4Th(MoO4)4

Conditions	Yield
at 900℃; for 14h;

rubidium nitrate (13126-12-0) + thorium(IV) nitrate pentahydrate + molybdenum trioxide (1313-27-5) → 5Th(4+)*12MoO4(2-)*4Rb(1+)

Conditions	Yield
at 900℃; for 14h;

rubidium nitrate (13126-12-0) + thorium(IV) nitrate pentahydrate + molybdenum trioxide (1313-27-5) → thorium molybdate

Conditions	Yield
at 900℃; for 14h;

Cl2OPu + water (7732-18-5) + hydrogen bromide (10035-10-6, 12258-64-9) + molybdenum trioxide (1313-27-5) → plutonium(III) molybdate bromide hydrate

Conditions	Yield
Stage #1: Cl2OPu; hydrogen bromide at 130℃; Stage #2: water; molybdenum trioxide at 200℃; for 72h; Sealed tube; Glovebox; Inert atmosphere;

Cl2OPu + water (7732-18-5) + hydrogen bromide (10035-10-6, 12258-64-9) + molybdenum trioxide (1313-27-5) → plutonium(IV) hexamolybdate dihydrate

Conditions	Yield
Stage #1: Cl2OPu; hydrogen bromide at 130℃; Stage #2: water; molybdenum trioxide at 230℃; for 72h; Sealed tube; Glovebox; Inert atmosphere;

neodymium tribromide hydrate + water (7732-18-5) + molybdenum trioxide (1313-27-5) → neodymium(III) dodecamolybdate pentahydrate

Conditions	Yield
at 200℃; for 72h; Autoclave;

aluminum(III) nitrate nonahydrate + molybdenum trioxide (1313-27-5) → aluminium molybdate

Conditions	Yield
Stage #1: aluminum(III) nitrate nonahydrate; molybdenum trioxide at 299.84 - 449.84℃; Stage #2: at 599.84℃; for 60h;

C24H46BNO5 + molybdenum trioxide (1313-27-5) → C48H90B2MoN2O12

Conditions	Yield
With hydrogenchloride In water for 0.25h; pH=4; Reflux;

C25H48BNO6 + molybdenum trioxide (1313-27-5) → C50H94B2MoN2O14

Conditions	Yield
With hydrogenchloride In water for 0.25h; pH=4; Reflux;

C18H38BNO4 + molybdenum trioxide (1313-27-5) → C36H74B2MoN2O10

Conditions	Yield
With hydrogenchloride In water for 0.25h; pH=4; Reflux;

C10H22BNO4 + molybdenum trioxide (1313-27-5) → C20H42B2MoN2O10

Conditions	Yield
With hydrogenchloride In water for 0.25h; pH=4; Reflux;

C18H36BNO5 + molybdenum trioxide (1313-27-5) → C36H70B2MoN2O12

Conditions	Yield
With hydrogenchloride In water for 0.166667h; pH=5; Reflux;

molybdenum trioxide (1313-27-5) + copper(II) oxide → copper(II) molybdate

Conditions	Yield
at 630℃; for 2h;

ammonium hydroxide (1336-21-6) + molybdenum trioxide (1313-27-5) + copper(II) oxide → [tetraamminecopper(II)] molybdate

Conditions	Yield
Stage #1: molybdenum trioxide; copper(II) oxide at 630℃; for 2h; Stage #2: ammonium hydroxide

molybdenum trioxide (1313-27-5) + 1,2-diaminopropan (78-90-0, 10424-38-1) → MoO3(1,2-diaminopropane)

Conditions	Yield
In water Reflux; Green chemistry;

Upstream product

• 126031-97-8 {MoCl₃(C₅H₄N)2(H₂O)} 

Downstream Products

• 13637-68-8 dioxomolybdenum(VI) dichloride 
• 7787-37-3 barium molybdate 
• 28780-74-7 (hydroxy)(oxo)(5,10,15,20-tetraphenylporphyrinato)molybdenum(v) 

Relevant articles and documents

Selective oxidation of propylene to acrolein by hydrothermally synthesized bismuth molybdates

Hydrothermal synthesis has been used as a soft chemical method to prepare bismuth molybdate catalysts for the selective oxidation of propylene to acrolein. All obtained samples displayed a plate-like morphology, but their individual aspect ratios varied with the hydrothermal synthesis conditions. Application of a high Bi/Mo ratio during hydrothermal synthesis afforded γ-Bi2MoO6 as the main phase, whereas lower initial bismuth contents promoted the formation of α-Bi2Mo 3O12. Synthesis with a Bi/Mo ratio of 1:1 led to a phase mixture of α- and γ-bismuth molybdate showing high catalytic activity. The use of nitric acid during hydrothermal synthesis enhanced both propylene conversion and acrolein yield, possibly due to a change in morphology. Formation of β-Bi2Mo2O9 was not observed under the applied conditions. In general, the catalytic performance of all samples decreased notably after calcination at 550 °C due to sintering.