Make Custom NFPA 704 Hazmat Diamonds
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Rating Explanation Guide
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| 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** |
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| 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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