dioxohafnium

• ChemBase ID: 127643
• Molecular Formular: HfO2
• Molecular Mass: 210.4888
• Monoisotopic Mass: 211.93637924
• SMILES: O=[Hf]=O
• Canonical SMILES: O=[Hf]=O
• InChI: InChI=1S/Hf.2O
• InChIKey: CJNBYAVZURUTKZ-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: dioxohafnium
• IUPAC Traditional name: hafnia
• Synonyms: Hafnium(IV) oxide; Hafnium dioxide; Hafnia; Hafnium(IV) oxide; 氧化铪(IV)

Database IDs

• CAS Number: 12055-23-1
• EC Number: 235-013-2
• MDL Number: MFCD00003565
• PubChem SID: 24852038; 24873674; 162221961; 24852168
• PubChem CID: 292779
• Chemspider ID: 258363
• Wikipedia Title: Hafnium(IV)_oxide

CALCULATED PROPERTIES

• H Acceptors: 2
• H Donor: 0
• LogD (pH = 5.5): -0.7028
• LogD (pH = 7.4): -0.7028
• Log P: -0.7028
• Molar Refractivity: 2.8858 cm^3
• Polarizability: 8.775451 Å^3
• Polar Surface Area: 34.14 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: insoluble in water
• Apperance: off-white powder; powder
• Melting Point: 2758 °C
• Boiling Point: 5400 °C
• Flash Point: Non-flammable
• Density: 9.68 g/cm^3, solid; 9.68 g/mL at 25 °C(lit.)

Safety Information

• German water hazard class: 3
• Safety Statements: 22-24/25
• EU Index: Not listed
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter

Product Information

• Purity: ≥99.8% (sum of HfO2 and ZrO2); ≥99.95%; 98%; 99.9% (Purity excludes 0.5-1% zirconium)
• Grade: puriss.
• Particle Size: -325 mesh
• Ignition Residue: ≤1% (1100 °C, 1h)
• Impurities: ~1% Zr; ≤0.1% other traces
• Empirical Formula (Hill Notation): HfO2

DETAILS

Sigma Aldrich - 203394

Packaging
1 g in glass bottle

Sigma Aldrich - 202118

Packaging
25, 100 g in poly bottle

Sigma Aldrich - 326119

Application
Suitable for spectrographic applications