Molybdenum trioxide , AR,99.5% , 1313-27-5

Synonym(s):
Molybdenum trioxide;Molybdenum trioxide, Molybdic acid anhydrous, Molybdic anhydride;Molybdenum(VI) oxide

CAS NO.：1313-27-5

Empirical Formula: MoO3

Molecular Weight: 143.94

MDL number: MFCD00003469

EINECS: 215-204-7

PRODUCT Properties

• Melting point: 795 °C(lit.)
• Boiling point: 1155 °C
• Density: 4.692
• vapor pressure: 0Pa at 20℃
• Flash point: 1155°C subl.
• storage temp.: Store at +5°C to +30°C.
• solubility: 0.49g/l
• form: Sublimed Powder
• Specific Gravity: 4.69
• color: White to gray
• Water Solubility: 0.5 g/L (20 ºC)
• Merck: 14,6239
• crystal system: Nogata
• Space group: Pnma
• Lattice constant:
  • a/nm: 1.385
  • b/nm: 0.3696
  • c/nm: 0.3966
  • α/o: 90
  • β/o: 90
  • γ/o: 90
  • V/nm3: 0.203
• Exposure limits: ACGIH: TWA 10 mg/m3; TWA 3 mg/m3; NIOSH: IDLH 5000 mg/m3
• InChIKey: JKQOBWVOAYFWKG-UHFFFAOYSA-N
• CAS DataBase Reference: 1313-27-5(CAS DataBase Reference)
• IARC: 2B (Vol. 118) 2018
• NIST Chemistry Reference: Molybdenum(vi) oxide(1313-27-5)
• EPA Substance Registry System: Molybdenum trioxide (1313-27-5)

Description and Uses

Molybdenum trioxide is an odorless, whitecrystalline powder that turns yellow when heated; Freezing/Melting point 5 795℃. Hazard Identification (based onNFPA-704 M Rating System): Health 2, Flammability 0,Reactivity 0. Slightly soluble in water.

Molybdenum trioxide (MnO3) is a compound used to make enamels adhere to metals.

Safety

• Symbol(GHS): GHS07,GHS08
• Signal word: Warning
• Hazard statements: H319-H335-H351
• Precautionary statements: P201-P305+P351+P338-P308+P313
• Hazard Codes: Xn,Xi
• Risk Statements: 36/37-48/20/22-40
• Safety Statements: 22-23-25-36/37
• WGK Germany: 1
• RTECS: QA4725000
• TSCA: Yes
• HazardClass: 6.1
• HS Code: 28257000
• Hazardous Substances Data: 1313-27-5(Hazardous Substances Data)
• Toxicity: LD50 orally in Rabbit: 2689 mg/kg LD50 dermal Rat > 2000 mg/kg