Molybdenum trioxide CAS#1313-27-5

High Thermal StabilityExhibits excellent heat resistance with a very high melting/freezing point of 795°C, making it suitable for high-temperature applications.


Low Flammability RiskRated 0 for flammability under the NFPA-704 system, indicating non-flammable properties and safer handling.


Stable Chemical PropertiesWith low reactivity (NFPA rating 0), it remains stable under normal conditions.


Distinct Physical CharacteristicsAppears as an odorless white crystalline powder that turns yellow when heated, enabling easy identification during processing.


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Product Description

Product Description of ‌Molybdenum trioxide CAS#1313-27-5

Molybdenum trioxide is an odorless white crystalline powder, turning yellow when heated. Its melting point is 795°C. Rated by NFPA-704 as Health 2, Flammability 0, Reactivity 0. It is slightly soluble in water.


Product Application of Molybdenum trioxide CAS#1313-27-5

Molybdenum(VI) oxide is applied in catalyst formulations for petroleum feedstock desulfurization and the removal of nitrogen compounds from petroleum fractions. It is also used to produce various molybdate salts and acts as a reagent in chemical analysis.

Product Information

Parameters


Melting point795 °C(lit.)
Boiling point1155 °C
Bulk density1200kg/m3
Density4.692
Vapor pressure0Pa at 20℃
Refractive index2.5166
Fp1155°C subl.
Storage tempStore at +5°C to +30°C.
Solubility0.49g/l
FormSublimed Powder
ColorWhite to gray
Specific Gravity4.69
OdorOdorless
Water Solubility0.5 g/L (20 ºC)
Merck146239
Crystal systemNogata
Space groupPnma
Lattice constanta/nmb/nmc/nmα/oβ/oγ/oV/nm31.3850.36960.39669090900.203
Exposure limitsACGIH: TWA 10 mg/m3; TWA 3 mg/m3
NIOSH: IDLH 5000 mg/m3
InChI1S/Mo.3O
InChIKeyJKQOBWVOAYFWKG-UHFFFAOYSA-N
SMILESO=[Mo](=O)=O
CAS DataBase Reference1313-27-5(CAS DataBase Reference)
IARC2B (Vol. 118) 2018
NIST Chemistry ReferenceMolybdenum(vi) oxide(1313-27-5)
EPA Substance Registry SystemMolybdenum trioxide (1313-27-5)


Safety Information


Hazard CodesXn,Xi
Risk Statements36/37-48/20/22-40
Safety Statements22-23-25-36/37
WGK Germany1
RTECSQA4725000
TSCATSCA listed
HazardClass6.1
HS Code28257000
Storage Class11 - Combustible Solids
Hazard ClassificationsCarc. 2
Eye Irrit. 2
STOT SE 3
Hazardous Substances Data1313-27-5(Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: 2689 mg/kg LD50 dermal Rat > 2000 mg/kg


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