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.
Specific Heat Capacity :Cp(crystal): 0.31 J/(g·K), at 25℃
Crystal Structure :Trigonal
crystal system :Nogata
Merck :14,9056
Space group :Pmm2
Lattice constant :

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.3888	4.029	0.6198	90	90	90	0.9709

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)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H320 Causes eye irritation Serious eye damage/eye irritation Category 2B Warning P264, P305+P351+P338,P337+P313
Precautionary statements:	P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P337+P313 IF eye irritation persists: Get medical advice/attention.