NFPA 704 Labeling Guide - Creative Safety Supply April 2014

NFPA GUIDE 2 A GUIDE TO NFPA 704 / NFPA FIRE DIAMOND LABELING HEALTH HAZARD 4 3 2 1 0 Very short exposure could cause death or serious residual injury even though prompt medical attention is given. 4 W 3 Short exposure could cause serious temporary or residual injury even though prompt medical attention was given. Intense or continued exposure could cause temporary incapacitation or possible residual injury unless prompt medical attention is given. Exposure could cause irritation but only minor residual injury even if no treatment is given. Exposure under fire conditions would offer no hazard beyond that of ordinary combustible materials. FLAMMABILITY 4 3 2 1 0 Will rapidly or completely vaporize at normal pressure & temperature, or is readily dispersed in air & will burn readily. Liquids and solids that can be ignited under almost all ambient conditions. Must be moderately heated or exposed to relatively high temperature before ignition can occur. Must be preheated before ignition can occur. Materials that will not burn. INSTABILITY 4 3 2 1 0 Readily capable of detonation or of explosive decomposition or reaction at normal temperatures and pressures. Capable of detonation or explosive reaction, but requires a strong initiating source or must be heated under confinement before initiation, or reacts explosively with water. Normally unstable and readily undergoes violent decomposition but does not detonate. Also, may react violently with water or may form potentially explosive mixtures with water. Normally stable, but can become unstable at elevated temperatures and pressures or may react with water with some release of energy, but not violently. Materials that will not burn. Normally stable, even under fire exposure conditions, and are not reactive with water. SPECIAL HAZARDS The NFPA 704 Standard defines the following symbols: OX Oxidizer (e.g., potassium perchlorate, ammonium nitrate, hydrogen peroxide) W Reacts with water in an unusual or dangerous manner (e.g., cesium, sodium, sulfuric acid) Non-Standard Symbols: COR Corrosive; strong acid or base (e.g. sulfuric acid, potassium hydroxide) Radioactive (e.g., plutonium, uranium) BIO POI Biological hazard (e.g., smallpox virus) SA CYL CRYO Simple asphyxiant gas. Limited to the following gases: nitrogen, helium, neon, argon, krypton & xenon Cryogenic (e.g. liquid nitrogen) Poisonous (e.g. Strychnine) Alternative PPE symbols (not a part of NFPA system) *There are more PPE Symbols than what is shown. Creative Safety Supply | phone: [phone] | fax: [phone] www.creativesafetysupply.com | email: [email protected]