Properties of arsenic trioxide

Identification

• Atoms
  As: 2, O: 3
• CAS
  1327-53-3
• Formula
  As2O3
• ID
  1327-53-3
• InChI
  2As.3O/q2*+3;3*-2
• InChI Key
  QTLQKAJBUDWPIB-UHFFFAOYSA-N
• IUPAC Name
  arsenic(3+);oxygen(2-)
• Molecular Weight (kg)
  197.841
• Phase
  s
• PubChem ID
  1.4888e+4
• SMILES
  [O-2].[O-2].[O-2].[As+3].[As+3]
• SynonymsView 35 Synonyms

Physical Properties

• Acentric factor
  0.0611
• Critical pressure (bar)
  40
• Critical temperature (°C)
  926.85
• Critical volume (m³/kmol)
  0.18319
• Dipole moment
• Melting temperature (°C)
  274
• Normal boiling temperature (°C)
  460

State-dependent Properties

• API gravity
  -90.984
• Compressibility factor
  0.00209496
• Density (kg/m³)
  3860.01
• Dynamic viscosity (cP)
  0
• Enthalpy of vaporization (mass) (kJ)
  333.264
• Enthalpy of vaporization (molar) (kJ/kmol)
  6.5933e+4
• Gibbs free energy (kJ/kmol)
  0
• Joule–Thomson coefficient
• Kinematic viscosity
• Molar enthalpy (kJ/kmol)
  0
• Molar entropy (kJ/(kmol·K))
  0
• Molar heat capacity (kJ/(kmol·K))
  50.7123
• Molar volume (m³/kmol)
  0.0512541
• Parachor
  3.3198e-5
• Poynting correction factor
  1.00233
• Prandtl number
• Saturation pressure (bar)
  1.3094e-11
• Solubility parameter
  3.3399e+4
• Specific enthalpy (kJ)
  0
• Specific entropy (kJ/kg·K)
  0
• Specific gravity
  3.86381
• Specific heat capacity (kJ/kg·K)
  0.256328
• Surface tension
  0.114918
• Thermal conductivity
• Thermal diffusivity

Safety Properties

• Autoignition temperature (°C)
  -273.15
• Flash point temperature (°C)
  -273.15
• Lower flammability limit
• Upper flammability limit

Environmental Properties

• Global warming potential
• Ozone depletion potential

Failed Properties:

• Saturation temperature (°C)Failed