Names
IUPAC nameAntimony(III) oxide
Other names
Antimony
Antimonous oxide
Flowers of Antimony
Identifiers
CAS Number: 1309-64-4
JSmol: Interactive image
ChemSpider: 25727
ECHA InfoCard: 100.013.796
EC Number: 215-474-6
KEGG: C19192
PubChem: 14794
RTECS number: CC5650000
UNII: P217481X5E
Properties
Chemical formula: SbO23
Molar mass: 291.518 g/mol
Appearance: white solid
Odor: odorless
Density: 5.2 g/cm, α-form
5.67 g/cm β-form33
Melting point: 656 °C (1,213 °F; 929 K)
Boiling point: 1,425 °C (2,597 °F; 1,698 K) (sublimes)
Solubility in water: 370 ± 37 µg/L between 20.8°C and 22.9°C
Solubility: soluble in acid
Magnetic susceptibility: -69.4·10 cm/mol−63
Refractive index: 2.087, α-form
2.35, β-form
Structure
Crystal structure: cubic
Coordination geometry: pyramidal
Dipole moment: zero
Hazards
Safety data sheet: See:
GHS pictograms:
GHS signal word: Warning
GHS hazard statements: H351
GHS precautionary statements: P281
NFPA 704:
LD
median dose: 7000 mg/kg, oral (rat)
NIOSH
PEL: TWA 0.5 mg/m (as Sb)3
REL: TWA 0.5 mg/m (as Sb)3
Related compounds
anions: Antimony trisulfide
cations: Bismuth trioxide
Related compounds: Diantimony tetraoxide
Supplementary data page
Structure and
properties: n
Thermodynamic
data: Phase behaviour
Spectral data: UV
Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).