NFPA 704 is a standard for the identification of the hazards of materials for emergency response maintained by the NFPA (National Fire Protection Association). It provides a simple system for the recognition of hazards by using a 4-section diamond with each quadrant being blue, red, yellow and...
The fire diamond is part of theStandard System for the Identification of the Hazards of Materials for Emergency Response (NFPA 704).In thistypeof standard, hazardous chemicals are classified into three principle categories: health, flammability, and instability. Each category is then rated on a sca...
Some organizations use other symbols, abbreviations, and words in the white Special Hazards section. NFPA 704 permits the use of additional symbols, but they must be placedoutsideof the NFPA diamond. The following symbols arenotcompliant with NFPA 704, but we present them here in case you see...