National Fire Protection Association (NFPA) Chemical Hazard Labels
NFPA Rating (optional)
The National Fire Protection Association (NFPA) has developed a system for indicating the health, flammability and reactivity hazards of chemicals. In addition, a special precaution symbol may be used where necessary
Rating Summary
Health (Blue) | ||
| 4 | Danger | May be fatal on short exposure. Specialized protective equipment required |
| 3 | Warning | Corrosive or toxic. Avoid skin contact or inhalation |
| 2 | Warning | May be harmful if inhaled or absorbed |
| 1 | Caution | May be irritating |
| 0 | No unusual hazard | |
Flammability (Red) | ||
| 4 | Danger | Flammable gas or extremely flammable liquid |
| 3 | Warning | Flammable liquid flash point below 100 degrees F |
| 2 | Caution | Combustible liquid flash point of 100 degrees to 200 degrees F |
| 1 | Combustible if heated | |
| 0 | Not combustible | |
Reactivity (Yellow) | ||
| 4 | Danger | Explosive material at room temperature |
| 3 | Danger | May be explosive if shocked, heated under confinement or mixed with water |
| 2 | Warning | Unstable or may react violently if mixed with water |
| 1 | Caution | May react if heated or mixed with water but not violently |
| 0 | Stable | Not reactive when mixed with water |
Special Notice Key (White) | ||
| W | Water Reactive | |
| Oxy | Oxidizing Agent | |
