Hazardous Material Identification System
The purpose of the NFPA 704 labeling system is to provide a way of quickly identifying the various fire related hazardous associated with a particular material. The NFPA 704 "diamond" below is commonly found on bulk storage containers, but is also widely used on chemical containers and MSDS sheets. Some of the chemicals you use at FIU may have their container labeled with this system .
4. Materials that will rapidly or completely vaporize at atmospheric pressure and normal ambient temperature, or that are readily dispersed in air and that will burn readily. Liquids with a flashpoint below 73ºF and a boiling point below 100ºF.
3. Liquids and solid that can be ignited under almost all ambient temperature conditions. Liquids with a flashpoint below 73ºF and a boiling point above 100ºF or liquids with a flashpoint above 73ºF but not exceeding 100ºF and a boiling point below 100ºF.
2. Materials that must be moderately heated or exposed to relatively high ambient temperatures before ignition can occur. Liquids with flashpoint above 100ºF but not exceeding 200ºF.
1. Materials that must be preheated before ignition can occur. Liquids that have a flashpoint above 200ºF.
0. Materials that will not burn.
4. Materials that on very short exposure could cause death or major residual injury.
3. Materials that on short exposure could cause serious temporary or residual injury.
2. Materials that on intense or continued, but not chronic exposure could cause incapacitation or possible residual injury.
1. Materials that on exposure would cause irritation but only minor residual injury.
0. Materials that on exposure under fire conditions would offer no hazard beyond that of ordinary combustible material.
4. Materials that in themselves are readily capable of detonation or of explosive decomposition or reaction at normal temperatures and pressures.
3. Materials that in themselves are capable of detonation or explosive decomposition or reaction but require a strong initiating source or which must be heated under confinement before initiation or which react explosively with water.
2. Materials that readily undergo violent chemical change at elevated temperatures and pressures or which react violently with water or which may form explosive mixtures with water.
1. Materials that in themselves are normally stable, but which can become unstable at elevated temperatures and pressures.
0. Materials that in themselves are normally stable, even under fire exposure conditions, and which are not reactive with water.
ACID = Acid
ALK = Alkali
COR = Corrosive
OX = Oxidizer
W = Reacts with water
☢ = Radioactive