Template:NFPA 704 diamond/codes-overview
Jump to navigation
Jump to search
Template documentation
Template documentation|type = code, blank, hyphen (=intentionally blank; hyphen), unknown |letter = H, F, I (R), S |code = 1, 2, 3, 4, OX, W, W+OX, ACID, ALK, BIO, COR, CRYO, RA
| Code descriptions () | |||
|---|---|---|---|
| input type | quarter | code | text |
| code | H | 0 | Health 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g. sodium chloride |
| code | H | 1 | Health 1: Exposure would cause irritation but only minor residual injury. E.g. turpentine |
| code | H | 2 | Health 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroform |
| code | H | 3 | Health 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gas |
| code | H | 4 | Health 4: Very short exposure could cause death or major residual injury. E.g. VX gas |
| code | F | 0 | Flammability 0: Will not burn. E.g. water |
| code | F | 1 | Flammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oil |
| code | F | 2 | Flammability 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g. diesel fuel |
| code | F | 3 | Flammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasoline |
| code | F | 4 | Flammability 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g. propane |
| code | I | 0 | Instability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogen |
| code | I | 1 | Instability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calcium |
| code | I | 2 | Instability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorus |
| code | I | 3 | Instability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxide |
| code | I | 4 | Instability 4: Readily capable of detonation or explosive decomposition at normal temperatures and pressures. E.g. nitroglycerin |
| code | S | OX | Special hazard OX: Oxidizer. E.g. potassium perchlorate |
| code | S | W, |
Special hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid |
| code | S | W+OX, WOX | Special hazard W+OX: Reacts with water in an unusual or dangerous manner AND is oxidizer. |
| code | S | ACID | Special hazard ACID: Acid. |
| code | S | ALK | Special hazard ALK: Alkaline. |
| code | S | BIO | Special hazard BIO: Biohazardous. E.g. smallpox virus |
| code | S | COR | Special hazard COR: Corrosive; strong acid or base. E.g. sulfuric acid, potassium hydroxide |
| code | S | CRYO | Special hazard CRYO: Cryogenic. |
| code | S | RA | Special hazard RA: Radioactive. E.g. plutonium |
| hyphen | H | - | Health (blue): no hazard code |
| hyphen | F | - | Flammability (red): no hazard code |
| hyphen | I | - | Instability (yellow): no hazard code |
| hyphen | S | - | Special hazards (white): no code |
| blank | H | <blank> | Health (blue): no hazard code |
| blank | F | <blank> | Flammability (red): no hazard code |
| blank | I | <blank> | Instability (yellow): no hazard code |
| blank | S | <blank> | Special hazards (white): no code |
| no letter | |||
| no letter | 3 | ||
| no letter | 9 | ||
| no letter | WOX | ||
| unknown | H | xyz | |
| unknown | F | xyz | |
| unknown | I | xyz | |
| unknown | S | xyz | |