Thorium dioxide , 99% , 1314-20-1

CAS NO.：1314-20-1

Empirical Formula: O2Th

Molecular Weight: 264.04

MDL number: MFCD00036277

PRODUCT Properties

• Melting point: 3050°C
• Boiling point: 4400°C
• Density: 9,86 g/cm³
• solubility: insoluble in H2O, alkaline solutions; slightly soluble in acid solutions
• form: white cubic crystals
• color: white cubic crystals, crystalline
• Resistivity: 4 ∞ 10*19 (ρ/μΩ.cm)
• Water Solubility: insoluble H2O, alkalies [MER06]
• Crystal Structure: Cubic
• crystal system: Cube
• Merck: 13,9455
• Space group: Fm3m
• Lattice constant:
  • a/nm: 0.55977
  • b/nm: 0.55977
  • c/nm: 0.55977
  • α/o: 90
  • β/o: 90
  • γ/o: 90
  • V/nm3: 0.1754
• Dielectric constant: 5.8（21℃）
• EPA Substance Registry System: Thorium dioxide (1314-20-1)

Description and Uses

Ceramics (high temperature), gas mantles, nuclear fuel, flame spraying, crucibles, medicine, nonsilica optical glass, catalyst, thoriated tungsten filaments.

Safety

• Symbol(GHS): GHS05,GHS07,GHS08
• Signal word: Danger
• Hazard statements: H302-H315-H318-H317-H341
• Precautionary statements: P501-P261-P272-P270-P202-P201-P264-P280-P302+P352-P308+P313-P362+P364-P333+P313-P301+P312+P330-P305+P351+P338+P310-P405
• Hazard Codes: T,R
• Risk Statements: 45-23/24/25-33
• Safety Statements: 53-36/37/39-45
• RIDADR: UN 2910 7
• RTECS: XO6950000
• Hazardous Substances Data: 1314-20-1(Hazardous Substances Data)