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NFPA 704 safety squares on containers of ethyl alcohol and acetone. " 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 ...
Template documentation. This template produces a NFPA 704 safety square with optionally four hazard codes. It is designed to be used in a table. Primary use is through { { Chembox }}, the { { NFPA 704 }} box and { { OrganicBox complete }} (chemical data pages). When used stand-alone (outside of a table), consider the { { NFPA 704 }} box.
1. Instability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calcium. code. I. 2. Instability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorus. code.
The National Fire Protection Association (NFPA) is a U.S.-based international nonprofit organization devoted to eliminating death, injury, property, and economic loss due to fire, electrical, and related hazards. [2][3] As of 2023, the NFPA claims to have 50,000 members and 9,000 volunteers working with the organization through its 250 ...
This template produces a NFPA 704 safety square with optionally four hazard codes. It is designed to be used in a table. Primary use is through { { Chembox }}, the { { NFPA 704 }} box and { { OrganicBox complete }} (chemical data pages). When used stand-alone (outside of a table), consider the { { NFPA 704 }} box.
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Many gases have toxic properties, which are often assessed using the LC 50 (median lethal concentration) measure. In the United States, many of these gases have been assigned an NFPA 704 health rating of 4 (may be fatal) or 3 (may cause serious or permanent injury), and/or exposure limits (TLV, TWA or STEL) determined by the ACGIH professional association.
Use {} {{NFPA 704 diamond}}: Health (blue) hazard code (0–4 or -) Flammability (red) hazard code (0–4 or -) Instability–reactivity (yellow) hazard code (0–4 or -). Alias: NFPA-R= Special hazards (white). See {{NFPA 704 diamond}} Reference for the NFPA fire diamond Flash point, any text Temperature, number in C. Can be a range: '50 to 60'.