National Fire Protection Association (NFPA) National Fire Protection Association (NFPA) Hazard Rating Diamond

Flammability Hazard - RED Health Hazard - BLUE Reactivity Hazard - YELLOW Special Hazard - WHITE NFPA Diamond Hazard Rating 4 4Severe 3 3Serious 2 2Dangerous 1 1Minor 0Slight OX

Serious Flammability Hazard Rating 3 0 OX 1 3 Flammability Rating “3” rapidly vaporizes at normal temperature and pressure rapidly disperses into air burns readily Includes: very flammable gases extremely volatile liquids dust that readily burns dust that explodes in air

3 0 OX 1 Slight Health Hazard Rating Health Rating “0” exposure under fire conditions offer no hazard beyond that of combustible material 0

3 0 OX 1 Minor Reactivity Hazard Rating 1 Reactivity Rating “1” materials must be preheated before ignition can occur includes most ordinary combustible materials

3 0 OX 1 Special Hazard Rating OX Special Hazard Rating “OX” materials, on exposure under fire conditions, would offer no hazard beyond that of combustible material

What does this NFPA Diamond mean? 3 2 W 4

White – Special Hazard The white "special notice" area can contain several symbols. The following symbols are defined by the NFPA 704 standard: W: reacts with Water in an unusual or dangerous manner (e.g., caesium, sodium)Watercaesium sodium OX or OXY: Oxidizer (e.g., potassium perchlorate, ammonium nitrate)Oxidizerpotassium perchlorateammonium nitrate SA: Simple asphyxiant gas (includes nitrogen, helium, neon, argon, krypton, or xenon)asphyxiant gas nitrogenheliumneonargonkryptonxenon

Non-standard symbols: Note: These symbols are not part of the NFPA 704 standard, but occasionally used in an unofficial manner. The use of non-standard symbols or text may be permitted, required or disallowed by the authority having jurisdiction (e.g., fire department).authority having jurisdiction COR: Corrosive; strong acid or base (e.g. sulfuric acid, potassium hydroxide)Corrosiveacidbase sulfuric acidpotassium hydroxide –ACID and ALK to be more specific. BIO: Biological hazard (e.g., smallpox virus)Biological hazardsmallpox virus POI: Poisonous (e.g. Spider Venom),PoisonousSpider Venom (the Radioactive trefoil): is radioactive (e.g., plutonium, uranium) Radioactive trefoil plutoniumuranium CRY or CRYO: Cryogenic (e.g. Liquid Nitrogen)CryogenicLiquid Nitrogen