| Material quantity | Comment | Value | Unity |
| density ρ | PS | 950 | kg/m3 |
| zero-shear viscosity η0 |
| 5838 | Pas |
| surface tension σ |
| 0.03 | N/m |
| diffusion coefficient D1 | PS/N2 | 1.0 × 10−9 | m2/s |
| diffusion coefficient D2 | PS/styrene | 3.4 × 10−10 | m2/s |
| Henry coefficient HW,1 | PS/N2 | 14000 | bar |
| Henry coefficient HW,2 | PS/styrene | 30 | bar |
| gas constant R1 | N2 | 296.8 | J/(kg・K) |
| gas constant R2 | styrene | 79.83 | J/(kg・K) |