dioxothorium

• ChemBase ID: 129882
• Molecular Formular: O2Th
• Molecular Mass: 264.0369
• Monoisotopic Mass: 264.02788424
• SMILES: O=[Th]=O
• Canonical SMILES: O=[Th]=O
• InChI: InChI=1S/2O.Th
• InChIKey: ZCUFMDLYAMJYST-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: dioxothorium
• IUPAC Traditional name: thoria
• Synonyms: thoria; thorium anhydride; Thorium dioxide; Thorium oxide; 氧化钍

Database IDs

• CAS Number: 1314-20-1
• EC Number: 215-225-1
• MDL Number: MFCD00036277
• PubChem SID: 162224168; 24889185
• PubChem CID: 14808
• Wikipedia Title: Thorium_dioxide

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: 10.375952 Å^3
• Polar Surface Area: 34.14 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: insoluble in alkali ; slightly soluble in acid; insoluble in water
• Apperance: white solid
• Melting Point: 3390°C
• Boiling Point: 4400°C
• Flash Point: Non-flammable
• Density: 10.00 g/cm^3
• Refractive Index: 2.200 (thorianite)
• Odor: odorless
• Std enthalpy of formation: −1226(4) kJ/mol
• Std molar entropy: 65.2(2) J K^−1 mol^−1

Safety Information

• European Hazard Symbols: Toxic (T)
• UN Number: 2910
• German water hazard class: 3
• Hazard Class: 7
• Risk Statements: 45-23/24/25-33
• Safety Statements: 53-36/37/39-45
• EU Index: Not listed
• GHS Pictograms: GHS06; GHS08
• GHS Signal Word: Danger
• LD50: 400 mg/kg
• GHS Hazard statements: H301-H311-H331-H350-H373
• GHS Precautionary statements: P201-P261-P280-P301 + P310
• RID/ADR: UN 2910 7

Product Information

• Purity: ≥99.0%
• Extent of Labeling: 7.15 kBq/g specific activity
• Linear Formula: ThO2

DETAILS

Sigma Aldrich - 89170

Other Notes
Sales restrictions may applyRegulations require a license for the sale of radioactive substances in Switzerland. Swiss customers are kindly requested when ordering, to include their license number, issued by the Swiss Public Health Authorities.
Warning
Regulations require a license for the sale of radioactive substances in Switzerland. Swiss customers are kindly requested when ordering, to include their license number, issued by the Swiss Public Health Authorities.