NFPA 704 Custom Hazmat Diamonds
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.
|OX - Oxidizer||ACID - Acid|
|SA - Asphyxiant||ALK - Alkaline|
|COR - Corrosive|
|COR+OX - Corrosive Oxidizer|
|COR+OXY - Corrosive Oxidizer|
|CRY - Cryogenic|
|OXY - Oxidizer Agent|
|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.
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