Pure Component Properties
[Instruction]
Click on units to view values in other units of measure* NA : Not Available (No data found)
Component Names and Formula
| ID | 189 | |
| Name | ISOBUTENE | |
| Synonyms | 2-METHYL PROPENE, ISOBUTYLENE | |
| CAS No. | 115-11-7 | |
| Formula | C4H8 |  |
| CH2C(CH3)2 | ||
| 3D View | ||
Basic Properties
| Molecular Wt. (WT) | 5.61072E+01 |
| Normal Boiling Point Temp. (TB) | 2.66200E+02 K units |
| Freezing Point Temp. (TF) | 1.32700E+02 K units |
| Triple Point Temp. (TT) | NA |
| Triple Point Press. (PT) | NA |
| Critical Temperature. (TC) | 4.17900E+02 K units |
| Critical Pressure (PC) | 4.00000E+03 kPa units |
| Critical Volume (VC) | 2.39000E-01 m^3/kg-mol units |
| Critical Compressibility (ZC) | 2.75137E-01 |
| Accentric Factor (ACCF) | 1.94000E-01 |
Temperature Dependent Properties
| Vapor Pressure | Coeff.s Available coefficients |
| Heat Capacity (Ideal Gas) | Coeff.s Available coefficients |
| Heat Capacity (Liquid) | Coeff.s Available coefficients |
| Viscosity (Gas, Low P) | Coeff.s Available coefficients |
| Viscosity (Liquid) | NA |
| Themal Conductivity (Gas, Low P) | Coeff.s Available coefficients |
| Themal Conductivity (Liquid) | NA |
| Surface Tension | NA |
Liquid Properties
| Partial Molar Volume (VOLP) | NA |
| Solubility Parameters (SOLP) | 1.382746E+04 (J/cm^3)^0.5 units |
| SRK accentric factor (WSRK) | 1.959000E-01 |
| COSTALD Characteristic Volume (VSTAR) | 2.369000E-01 m^3/kg-mol units |
| Rackett parameter (ZRA) | 2.728000E-01 |
| Aniline Point (ANP) | 2.880500E+02 K units |
Enthalpy Data
| H(formation,ideal gas)at 25 C | -1.691000E+04 kJ/kg-mol units |
| G(formation,ideal gas) at 25 C | 5.811000E+04 kJ/kg-mol units |
| Heat of Combustion, Gross form (HCB1) | 2.679266E+06 kJ/kg-mol units |
| Heat of Combustion, Net form (HCB2) | 2.503204E+06 kJ/kg-mol units |
Molecular Properties
| Van der Waals Volume (VDWV) | NA |
| Van der Waals Area (VDWA) | NA |
| UNIQUAC Ri Parameter (RI) | NA |
| UNIQUAC Qi Parameter (QI) | NA |
| Dipole Moment (DM) | 5.000000E-01 debye units |
| Radius of Gyration (GYRAD) | NA |
Single Temperature Properties
| Liquid Density (DENL) | 1.058688E-02 g-mol/cm^3 units |
| Temperature of DENL (TDENL) | 2.930000E+02 K units |
| Heat of Vaporizaiton (HVAP) | 2.211700E+04 kJ/kg-mol units |
| Temperature of HVAP (THVAP) | 2.663000E+02 K units |
| Surface Tension (SRF) | NA |
| Temperature of SRF (TSRF) | NA |
| Dielectric Constant (DIEL) | NA |
| Temperature of DIEL (TDIEL) | NA |
| Refractive Index (RFI) | NA |
| Temperature of RFI (TRFI) | NA |
Hazardous Data
| Lower Flammability Limit(FLL) | 1.800000E+00 % in Air |
| Upper Flammability Limit(FLU) | 9.600000E+00 % in Air |
| Flash Point (Open Cup Method) | 1.970389E+02 K units |
| Flash Point (Closed Cup Method) | NA |
| Autoignition Temperature (AIGT) | 7.381500E+02 K units |
| NFPA Rating (Health) | |
| NFPA Rating (Fire) | |
| NFPA Rating (Safety) |