Molybdenum(IV) oxide , 99% , 18868-43-4

Synonym(s):
Molybdenum dioxide

CAS NO.：18868-43-4

Empirical Formula: MoO2

Molecular Weight: 127.94

MDL number: MFCD00014223

EINECS: 242-637-9

PRODUCT Properties

• Melting point: decomposes [JAN85]
• Density: 6.47 g/mL at 25 °C (lit.)
• solubility: insoluble in H2O, acid solutions, alkaline solutions
• form: Powder
• Specific Gravity: 6.47
• color: Red-brown
• Water Solubility: slightly soluble H2SO4; insoluble HCl, HF, and alkalies [HAW93]
• Crystal Structure: MoO2 type
• crystal system: Monoclinic
• Space group: P21/c
• Lattice constant:
  • a/nm: 0.55388
  • b/nm: 0.48562
  • c/nm: 0.56285
  • α/o: 90
  • β/o: 119.683
  • γ/o: 90
  • V/nm3: 0.1315
• Exposure limits: ACGIH: TWA 10 mg/m3; TWA 3 mg/m3; NIOSH: IDLH 5000 mg/m3
• InChIKey: QXYJCZRRLLQGCR-UHFFFAOYSA-N
• CAS DataBase Reference: 18868-43-4(CAS DataBase Reference)
• EPA Substance Registry System: Molybdenum oxide (MoO2) (18868-43-4)

Description and Uses

Molybdenum(IV) oxide is used to catalyze the dehydrogenation of alcohols. It is also used as an intermediates and processing aids. It finds application in the manufacture of molybdenum nano-wires.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319
• Precautionary statements: P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313
• Hazard Codes: Xn
• Risk Statements: 20/21/22-36/37/38
• Safety Statements: 26-36
• WGK Germany: 1
• RTECS: QA4688000
• TSCA: Yes
• HS Code: 28257000
• Toxicity: mouse,LD50,subcutaneous,318mg/kg (318mg/kg),Zhurnal Vsesoyuznogo Khimicheskogo Obshchestva im. D.I. Mendeleeva. Journal of the D.I. Mendeleeva All-Union Chemical Society. Vol. 19, Pg. 186, 1974.