HMIS PHYSICAL HAZARD RATING CHART 0=MINIMAL HAZARD Materials that are normally stable, under fire conditions and will not react to water, polymerize, decompose, condense or self react. 1=SLIGHT HAZARD Materials that are normally stable but can become unstable at high temperature and pressures. Mate...
(Classes IB & IC) 4=SEVERE HAZARD Flammable gases, or very volatile flammable liquids with flash points below 73° F, and boiling points below 100° F. Materials may ignite spontaneously with air. (Class IA) HMIS PHYSICAL HAZARD RATING CHART 0=MINIMAL HAZARD Materials that are normally ...