NFPA 704 Printed Sign Generator :
Design Your Own NFPA 704 Hazmat Diamond Sign or Label

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Set your Hazard Levels

Health Hazard Level
Flammability Hazard Level
Instability Hazard Level
Special Hazard*
Rating Explanation Guide
HEALTH HAZARD FLAMMABILITY HAZARD INSTABILITY HAZARD
4 = Can be lethal 4 = Below 73 Degrees F 4 = May explode at normal temperatures and pressures
3 = Can cause serious or permanent injury 3 = Above 73 Degrees 3 = May explode at high temperature or shock
2 = Can cause temporary incapacitation or residual injury 2 = Above 100 Degrees F, 2 = Violent chemical change at high temperatures or pressures
1 = Can cause significant irritation 1 = Above 200 Degrees F 1 = Normally stable.  High temperatures make unstable
0 = No hazard 0 = Will not burn 0 = Stable

This chart is for reference use only.  To determine specifications, you can purchase a copy of the NFPA 704 standard here..

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 hazards is essential for emergency responders and anyone who needs to handle such materials.

*NOTES on SPECIAL HAZARD SYMBOLS:

Although NFPA diamonds commonly are created with a variety of symbols, only three symbols are authorized by the NFPA for use on Hazmat Diamonds: OX, SA and W. These approved symbols are indicated on the dropdown menu above. 

   Authorized Special
Hazard Symbols
  Non-authorized
Symbols**
  OX - Oxidizer   ACID - Acid
  SA - Asphyxiant   ALK - Alkaline
  W - No Water   COR - Corrosive
      COR+OX - Corrosive Oxidizer
      COR+OXY - Corrosive Oxidizer
      CRY - Cryogenic
      OXY - Oxidizer Agent
      W + OX - No Water Oxidizer
      RAD - Radioactive

 

**Emergency responders in your area might not recognize non-authorized symbols, because they are not defined in NFPA 704. Before using these symbols, consult your local emergency response team regarding size and placement of non-authorized symbols with your NFPA diamond.

NFPA Rating Explanation Guide 

 

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