Table 5 Toxic product yields the flaming combustion of a rigid polyurethane foam and polyisocyanurate foam (Stec & Hull 2011)
| Material | Furnace temperature (°C) | ϕ | CO Yield/mg g−1 | HCN Yield/mg g−1 |
|---|---|---|---|---|
| Rigid Polyurethane Foam | 650 | 0.69 | 60 | 6 |
| 650 | 1.24 | 220 | 9 | |
| 825 | 2.00 | 240 | 12 | |
| Polyisocyanurate Foam | 650 | 0.75 | 80 | 7 |
| 650 | 1.34 | 220 | 10 | |
| 825 | 1.97 | 225 | 17 |