NFPA 704

"NFPA 704: specifics System for the Identification of the Hazards of Materials for Emergency Response" is a standard sustains by the U.S.-based National Fire security degree Association. number one "tentatively adopted as a guide" in 1960, as well as revised several times since then, it defines the colloquial "Safety Square" or "Fire Diamond" used by emergency personnel to quickly as well as easily identify the risks posed by hazardous materials. This helps establishment what, whether any, special equipment should be used, procedures followed, or precautions taken during the initial stages of an emergency response. it is for an internationally accepted safety standard, and is crucial while transporting chemicals.

The four divisions are typically color-coded with red on top indicating flammability, blue on the left indicating level of health hazard, yellow on the adjusting for chemical reactivity, and white containing codes for special hazards. regarded and transmitted separately. of health, flammability and reactivity is rated on a scale from 0 no hazard to 4 severe hazard. The latest representation of NFPA 704 sections 5, 6, 7 and 8 for the standard of regarded and identified separately. classification are referred below. The numeric values in the number one column are designated in the standard by "Degree of Hazard" using Arabic numerals 0, 1, 2, 3, 4, not to be confused with other classification systems, such as that in the NFPA 30 Flammable and Combustible Liquids Code, where flammable and combustible liquid categories are designated by "Class", using Roman numerals I, II, III.