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Released on 30-07-2020

NFPA 704 Hazmat Diamond Explanation Guides

The National Fire Protection Agency (NFPA), in section 704 of the National Fire Code, specifies a system for identifying hazards associated with various materials. Proper identification of such hazards is essential for anyone who needs to handle such materials and emergency responders. These full-color NFPA 704 Explanation Guides will help people understand and apply NFPA ratings.

  • Available in a variety of sizes and materials, including aluminum, pvc plastic, magnetic and vinyl labels

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  • Any private or commercial business that stores or transports hazardous materials should use these signs

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NFPA Rating Explanation Guide HEALTH HAZARD FLAMMABILITY HAZARD SPECIAL HAZARD INSTABILITY HAZARD 4 = Can be lethal 3 = Can cause serious or permanent injury 2 = Can cause temporary incapacitation or residual injury 1 = Can cause significant irritation 0 = No hazard 4 = Will vaporize and readily burn at normal temperatures 3 = Can be ignited under almost all ambient temperature 2 = Must be heated or high ambient temperature to burn 1 = Must be preheated before ignition can occur 0 = Will not burn OX = Oxidizing SA = Simple asphyxiants W = Reacts violently or explosively with water This chart for reference only - for complete specifications consult the NFPA 704 Standard

NFPA-Chart_2
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NFPA Rating Explanation Guide Rating Number Health Hazard Flammability Hazard Instability Hazard Rating Symbol Special Hazard 4 Can be lethal Will vaporize and readily burn at normal temperatures May explode at normal temperatures and pressures 3 Can cause serious or permanent injury Can be ignited under almost all ambient temperature May explode at high temperature or shock 2 Can cause temporary incapacitation or residual injury Must be heated or high ambient temperature to burn Violent chemical change at high temperatures or pressures 1 Can cause significant irritation Must be preheated before ignition can occur Normally stable. High temperatures make unstable 0 No hazard Will not burn Stable OX Oxidizing SA Simple asphyxiants W Reacts violently or explosively with water This chart for reference only - for complete specifications consult the NFPA 704 Standard

NFPA-Chart_1
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HEALTH HAZARD 4. . . Can be lethal 3. . . Can cause serious or permanent injury 2. . . Can cause temporary incapacitation or residual injury 1. . . Can cause significant irritation 0. . . No hazard FLAMMABILITY 4. . . Will vaporize and readily burn at normal temperatures 3. . . Can be ignited under almost all ambient temperatures 2...Must be heated or high ambient temperature to burn 1...Must be preheated before ignition can occur 0...Will not burn INSTABILITY 4...May explode at normal temperature and pressures 3...May explode at high temperature or shock 2...Violent chemical change at high temperature or pressures 1...Normally stable. High temperatures make unstable 0...Stable SPECIAL Oxidizing OX Simple asphysiants SA Reacts violently or explosively with water W

HAZCHEM-14702
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CHEMICAL IDENTITY CHART HEALTH DEGREE OF HAZARD 4 DEADLY 3 SERIOUS OR PERMANENT INJURY 2 TEMPORARY INCAPACITATION OR RESIDUAL INJURY 1 SIGNIFICANT IRRITATION 0 NO HAZARD FLAMMABLE SUSCEPTIBILITY TO BURNING 4 BELOW 73°F VERY FLAMMABLE 3 BELOW 100°F IGNITES UNDER NORMAL TEMPERATURE CONDITIONS 2 BELOW 200°F IGNITES WITH MODERATE HEATING 1 ABOVE 200°F IGNITES WHEN PREHEATED 0 WILL NOT BURN REACTIVITY SUSCEPTIBILITY TO ENERGY RELEASE 4 MAY DETONATE UNDER NORMAL CONDITIONS 3 MAY DETONATE WITH SHOCK OR HEAT 2 VIOLENT CHEMICAL CHANGE BUT DOES NOT DETONATE 1 NOT STABLE IF HEATED USE PRECAUTIONS 0 NORMALLY STABLE

HAZCHEM-14704
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GUÍA DE EXPLICACIONES DE LAS CLASIFICACIONES DE LA NFPA NÜMERO DE CLASIFICACÍON PELIGRO DE INFLAMABILIDAD PELIGRO DE INESTABILIDAD SÍMBOLO DE CLASIFICACÍN PELIGRO ESPECIAL 4 Puede ser mortal Se vaporizará y se quemará fácilmente bajo las temperaturas normales Puede estallar bajo las temperaturas y presiones normales 3 Puede causar daño serio o permanente Puede estar el bajo encendido casi todo el temperatura ambiente Puede explotar a altas temperaturas o por impacto 2 Puede causar la incapacitación temporal o daño residual Se debe calentar o (someterlo) a una temperatura ambiente alta para quemarse Cambios químicos violentos bajo las temperaturas o presiones altas 1 Puede causar la irritación significativa Debe ser precalentado antes de que la ignición pueda ocurrir Normalmente estable. Las altas temperaturas lo convierten en inestable No existe peligro No se quemará Estable OX Oxidante SA Asfixiantes W Reacciona violenta o explosivamente con agua Este cuadro es solamente para referencia. Para las especificaciones completas, consulta la morma 704 de la NFPA

NFPA-Chart_1_Spanish
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GUÍA DE EXPLICACIONES DE LAS CLASIFICACIONES DE LA NFPS PELIGRO PARA LA SALUD PELIGRO DE INFLAMABILIDAD 4 = Puede ser mortal 3 = Puede causar daño serio o permanente 2 = Puede causar la incapacitación temporal o daño residual 1 = Puede causar la irritación significativa 0 = No existe peligro 4 = Se vaporizará y se quemará fácilmente bajo las temperaturas normales 3= Se puede encender bajo casi todas las temperaturas ambientes 2 = Se debe calentar o (someterlo) a una temperatura ambiente alta para quemarse 1 = Debe ser precalentado antes de que la ignición pueda ocurrir 0 = No se quemará OX = Oxidanta SA = Asfixiantes simples W = Reacciona violenta o explosivamente con ague 4 = Puede estallar bajo las temperaturas y presiones normales 3 = Puede explotar a altas temperaturas o por impacto 2 = Cambios químicos violentos bajo las temperaturas o presiones altas 1 = Normalmente estable. Las altas temperaturas lo convierten en inestable 0 = Estable Este cuadro es solamente para referencia. Para las especificaciones completas, consulta la morma 704 de la NFPA

NFPA-Chart_2_Spanish
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