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7446-07-3

Name Tellurium dioxide
CAS 7446-07-3
EINECS(EC#) 231-193-1
Molecular Formula O2Te
MDL Number MFCD00011263
Molecular Weight 159.6
MOL File 7446-07-3.mol
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Chemical Properties

Appearance white crystalline powder
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
color  White to slightly yellow
Specific Gravity 5.8
Stability: Stable. Incompatible with strong acids, strong oxidizing agents.
Water Solubility  insoluble
λmax 360nm(neat)(lit.)
Merck  14,9123
Exposure limits ACGIH: TWA 0.1 mg/m3
NIOSH: IDLH 25 mg/m3; TWA 0.1 mg/m3
CAS DataBase Reference 7446-07-3(CAS DataBase Reference)
NIST Chemistry Reference tellurium(IV) dioxide(7446-07-3)
EPA Substance Registry System 7446-07-3(EPA Substance)

Safety Data

Safety Statements 
S24/25:Avoid contact with skin and eyes .
RIDADR  UN 3284 6.1/PG 3
WGK Germany  2
RTECS  WY2675000
TSCA  Yes
HazardClass  6.1(a)
PackingGroup  II
HS Code  28112900
Safety Profile
Poison by intratracheal route. An experimental teratogen. Experimental reproductive effects. When heated to decomposition it emits toxic fumes of Te. See also TELLURIUM COMPOUNDS.
Toxicity
LD50 orally in Rabbit: > 2000 mg/kg

Hazard Information

Material Safety Data Sheet(MSDS)

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