Tellurium dioxide , 99.999%metalsbasis , 7446-07-3

Synonym(s):
Telluria;Tellurium dioxide;Tellurium oxide;Tellurium(IV) oxide

CAS NO.：7446-07-3

Empirical Formula: O2Te

Molecular Weight: 159.6

MDL number: MFCD00011263

EINECS: 231-193-1

PRODUCT Properties

• Melting point: 733 °C (lit.)
• Boiling point: 1245 °C
• Density: 5.67 g/mL at 25 °C (lit.)
• vapor pressure: 0Pa at 25℃
• storage temp.: no restrictions.
• solubility: insoluble in H2O; soluble in alkaline solutions, acid solutions
• form: Powder
• Specific Gravity: 5.8
• color: White to slightly yellow
• Water Solubility: insoluble
• λmax: 360nm(neat)(lit.)
• Merck: 14,9123
• crystal system: square
• Space group: P41212
• Lattice constant:
  • a/nm: 0.48122
  • b/nm: 0.48122
  • c/nm: 0.76157
  • α/o: 90
  • β/o: 90
  • γ/o: 90
  • V/nm3: 0.1764
• Exposure limits: ACGIH: TWA 0.1 mg/m3; NIOSH: IDLH 25 mg/m3; TWA 0.1 mg/m3
• Stability: Stable. Incompatible with strong acids, strong oxidizing agents.
• CAS DataBase Reference: 7446-07-3(CAS DataBase Reference)
• NIST Chemistry Reference: tellurium(IV) dioxide(7446-07-3)
• EPA Substance Registry System: Tellurium oxide (TeO2) (7446-07-3)

Description and Uses

TeO₂ can be potentially used in medical imaging and industrial monitoring processes.

Safety

• Symbol(GHS): GHS07,GHS08,GHS09
• Signal word: Danger
• Hazard statements: H317-H332-H360D-H411
• Precautionary statements: P202-P273-P280-P302+P352-P304+P340+P312-P308+P313
• Safety Statements: 24/25
• RIDADR: UN 3284 6.1/PG 3
• WGK Germany: 2
• RTECS: WY2675000
• TSCA: Yes
• HazardClass: 6.1(a)
• PackingGroup: II
• HS Code: 28112900
• Toxicity: LD50 orally in Rabbit: > 2000 mg/kg