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"NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response" is a standard maintained by the U.S.-based National Fire Protection Association. First "tentatively adopted as a guide" in 1960, [ 1 ] and revised several times since then, it defines the " Safety Square " or " Fire Diamond " which is used to ...
W, W, <s>W</s> Special hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid code S: W+OX, WOX: Special hazard W+OX: Reacts with water in an unusual or dangerous manner AND is oxidizer code S: ACID: Special hazard ACID: Acid code S: ALK: Special hazard ALK: Alkaline code S: BIO: Special hazard BIO: Biohazardous.
This template produces a NFPA 704 safety square with optionally four hazard codes. It is designed to be used in a table. It is designed to be used in a table. Primary use is through {{ Chembox }} , the {{ NFPA 704 }} box and {{ OrganicBox complete }} (chemical data pages).
NFPA 704 Safety Square: To quickly and easily identify the risks posed by hazardous materials Emergency response personnel Currently used in the US Hazardous Materials Identification System: A numerical hazard rating used to identify the risks posed by hazardous materials Employers and workers who handle and are exposed to hazardous chemicals
This template produces a NFPA 704 safety square with optionally four hazard codes. It is designed to be used in a table. It is designed to be used in a table. Primary use is through {{ Chembox }} , the {{ NFPA 704 }} box and {{ OrganicBox complete }} (chemical data pages).
In an NFPA 704 fire diamond's white square, and in similar contexts, they are denoted as "W". The classification of substances as water-reactive is largely a consideration for the safety of firefighting and transportation operations.
Hydrogen safety covers the safe production, handling and use of hydrogen, particularly hydrogen gas fuel and liquid hydrogen. Hydrogen possesses the NFPA 704's highest rating of four on the flammability scale because it is flammable when mixed even in small amounts with ordinary air. Ignition can occur at a volumetric ratio of hydrogen to air ...
Combining the systems, such as using an NFPA 704 fire diamond, but placing HMIS PPE information in the white 'special hazards' square, is discouraged by both the ACA and NFPA. [10] In spite of this position from both organizations, the combining of systems still occurs on labels and posters, sometimes as a result of trying to mimic the ...