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1314-61-0

Name TANTALUM(V) OXIDE
CAS 1314-61-0
EINECS(EC#) 215-238-2
Molecular Formula O5Ta2
MDL Number MFCD00011254
Molecular Weight 441.89
MOL File 1314-61-0.mol
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Chemical Properties

Appearance white to white-beige powder
Melting point  1872 °C
density  8.2 g/mL at 25 °C(lit.)
storage temp.  Sealed in dry,Room Temperature
solubility  insoluble in H2O, ethanol, acid solutions; sHF
form  lumps
color  White to white-beige
Specific Gravity 8.2
Resistivity 1.0 ∞ 10*12 (ρ/μΩ.cm)
Water Solubility  Insoluble in water.
Crystal Structure Trigonal
Merck  14,9056
Dielectric constant 11.6（Ambient）
Exposure limits OSHA: TWA 5 mg/m3
NIOSH: IDLH 2500 mg/m3; TWA 5 mg/m3; STEL 10 mg/m3
InChI InChI=1S/5O.2Ta
InChIKey PBCFLUZVCVVTBY-UHFFFAOYSA-N
SMILES [Ta](=O)(=O)O[Ta](=O)=O
CAS DataBase Reference 1314-61-0(CAS DataBase Reference)
EPA Substance Registry System Tantalum oxide (Ta2O5) (1314-61-0)
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Safety Data

Hazard Codes  Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S37/39:Wear suitable gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
WGK Germany  -
RTECS  WW5855000
TSCA  Yes
HS Code  28259085
Safety Profile
Mildly toxic by ingestion. Incompatible with ClF3, BrF3, Li. See also TANTALUM.
Toxicity
LD50 orally in rats: 8000 mg/kg (Cochran)

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