Inhalational toxicity |     Flammability |     Reactivity | |||
---|---|---|---|---|---|
AEGL-3 or PAC-3 (mg/m3) for 60Â min exposure | Toxicity score | NFPA flammability criteria* | NFPA score | NFPA reactivity criteria* | NFPA score |
≤1 | 4 | Flammable gas or cryogenic material | 4 | Materials with instantaneous power density (IPD) of 1000 W/mL or greater @ 250°C; sensitive to localized thermal or mechanical shock at normal temperature and pressure | 4 |
Liquid with flash point (FP) below 22.8°C and boiling point (BP) below 37°C | |||||
 |  | Materials that spontaneously ignite when exposed to air |  |  |  |
>1, ≤10 | 3 | Liquids with FP below 22.8°C and BP at or above 37.8°C; or FP at or above 22.8°C and below 37.8°C | 3 | Materials with IPD at or above 100 W/mL and below 1000 W/mL @ 250°C; sensitive to thermal or mechanical shock at elevated temperature and pressure | 3 |
>10, ≤100 | 2 | Liquids with FP at or above 37.8°C and below 93.4°C | 2 | Materials with IPD at or above 10 W/mL and below 100 W/mL @ 250°C | 2 |
>100, ≤1000 | 1 | Liquids, solids, semi-solids with FP above 93.4°C | 1 | Materials with IPD at or above 0.01 W/mL and below 10 W/mL @ 250°C | 1 |
>1000 | 0 | If assigned 0 by NFPA | 0 | Materials with IPD below 0.01 W/mL @ 250°C | 0 |