The NFPA Diamond

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3. Expand All Compress All
   

4. The NFPA Diamond

5. The NFPA diamond is designed to give general hazard information for chemicals. Click on the hazards/colors for the specific hazards represented by the numbers.

6. Red: Fire Hazard

   1. 0 – Will not burn
   2. 1 – Must be preheated for ignition; flashpoint above 200°F (93°C)
   3. 2 – Must be moderately heated for ignition, flashpoint above 100°F (38°C)
   4. 3 – Ignition may occur under most ambient conditions, flashpoint below 100°F (38°C)
   5. 4 – Extremely flammable and will readily disperse through air under standard conditions, flashpoint below 73°F (23°C)

7. Blue: Health Hazard

   1. 0 – Hazard no greater than ordinary material
   2. 1 – May cause irritation; minimal residual injury
   3. 2 – Intense or prolonged exposure may cause incapacitation; residual injury may occur if not treated
   4. 3 – Exposure could cause serious injury even if treated
   5. 4 – Exposure may cause death

8. Yellow: Reactivity Hazard

   1. 0 – Stable
   2. 1 – May become unstable at elevated temperatures and pressures, may be mildly water reactive
   3. 2 – Unstable; may undergo violent decomposition, but will not detonate. May form explosive mixtures with water
   4. 3 – Detonates with strong ignition source
   5. 4 – Readily detonates

9. White: Special Hazard

   1. OX Strong Oxidizer
   3. water reactive

10. Other Symbols Commonly Seen (these are not official NFPA symbols)

    1. ACID - Indicates an acid
    2. ALK - Indicates an alkali or base
    3. COR - Indicates the chemical is corrosive
    5. radioactive
    7. corrosive
    9. poison
    11. flammable solid
    13. oxidizer
    15. biohazard
    17. irritant
    19. flammable gas or liquid
    21. dangerous when wet

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