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The NFPA 704 diamond is a ring of smaller diamonds that are blue, red, yellow and white. A number or symbol in each section indicates the relative danger.
The NPFA mark is used for materials that can ignite.
The number 4 on the NFPA 704 placard indicates the highest hazard in any of the three categories (health, fire, reactivity).
2-0-1-ox
Health (Blue): 1 Flammability (Red): 2 Reactivity (Yellow): 0 Special (White): None
NFPA 1002 is the Standard for Driver Operator Professional Qualifications.
I don't think the NFPA diamond has a category for "may cause hyperactive behavior or tooth decay".
NFPA 220: Standard on Types of Building Construction
NFPA 10
NFPA 70
Nfpa 1500)
NFPA 10: Standard for Portable Fire Extinguishers