NFPA 704
NFPA 704? ?? ????????(NFPA : National Fire Protection Association)?? ??? ?? ??(hazardous materials) ?? ????. ???? ?? 4?? ???? ?? ?, ? ??? ??? ??? ??? ????.
?? ??? ?? NFPA 704??, ?? ?? ?? ????? ?? 'fire diamond'?? ??? ??. ? ?? ?? ??? ???(Flammability)? ????, ?? ??? ?? ???(health hazards)?, ?? ??? ????/???(Instability/reactivity)? ??? ?? ??? ?? ????(Special notice)? ????. ??? ??? ??? ??? 0???? 4???? ? 5??? ?????, ? NFPA 704? ? ??? ???? ??? ??? ??.
?? ?? '??'??? ??? ??? ??? ??? ??? ???, '???' ??? ?? ??? ????? ?? ??? ?? 1?, ?? ??? ?? 4? ??? ???.
?? ???? ? ?? ??? ?? ?? ? ??? ??? ??? ???? ????? ???? ????? ???? ??? ????? ? ?????, ?? ????? ????? ??? ??? ?? ??? ???. ??? ?? ????? ? ??? ?? ?????? ???? ??? ????? ??? ??? ? ?? ?? ????? ??? ???? ?? ?????.
?? ? ???? ????? ? ??? ??? ??? ??? ??? ??? ??? ??? ??.
??? Flammability (red)
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0
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?? ?? ??. (e.g. ?, ??)
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1
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?? ??? ???? ???. ???? 93.3 °C ??? ??. (e.g. ???).
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2
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????? ?? ?????? ???? ???? ???. ???? 37.8 °C ???? 93.3 °C ??? ??. (e.g. ??)
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3
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???? ?????? ??? ? ?? ??/???. ???? 22.8 °C ???? 37.8 °C ??? ??. (e.g. ???, ???).
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4
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???? ??????? ?? ?? ??? ?????, ??? ? ???? ?? ???? ??. ???? 22.8 °C ?? ??? ??. (e.g. ????, ????, ????).
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?? ??? health hazards (blue)
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0
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??? ??? ?? ??.(e.g. ??, ??)
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1
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?? ? ??? ??? ??? ? ??.(e.g. ???)
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2
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??? ??? ?? ??? ?? ??? ???? ??? ??? ??? ??? ? ??. ?? ??? ? ??? ?? ????? ???? ??? ? ??.(e.g. ???? ??)
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3
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?? ?? ??? ???? ??? ?? ??? ??? ??? ? ??. ??? ??? ?.(e.g. ??? ??, ??, ????)
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4
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?? ?? ??? ???? ?? ?? ??? ??? ??? ? ??. ??? ?? ?? ???? ???? ??? ? ??.(e.g. ???? ??, ???,??????? ??, ????? ???)
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????/??? Instability/reactivity (yellow)
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0
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??? ????? ????? ????, ?? ???? ??.(e.g. ??, ??)
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1
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????? ?????, ?? ?? ?? ??? ??????? ?? ???? ??? ???? ???? ??(e.g. ???)
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2
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???? ?? ?? ? ??? ??? ??? ? ??, ??? ??? ??? ? ?? ??. ?? ?? ????? ?? ? ?? ???? ?? ??.(e.g. ??, ???)
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3
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?? ???? ??? ??? ???? ???? ??. ?? ??? ???? ?? ??.(e.g. ?? ???)
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4
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???? ?? ????? ??? ??? ??? ? ?? ??.(e.g. ????????, ??? ??)
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?? ??? Special notice (white)
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OX
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??? ??, ???(e.g. ?? ???).
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W
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?? ??? ? ???, ?? ? ??? ??? ??? ? ??. ?????(e.g. ???, ??).
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SA
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?? ??(Asphyxiant gas)
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?? Non-standard symbols (white)
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These hazard codes are not part of the NFPA 704 standard, but are occasionally used in an unofficial manner. The use of non-standard codes may be permitted, required or disallowed by the authority having jurisdiction (e.g. fire department).
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COR
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???, ??, ???.(e.g. sulfuric acid, potassium hydroxide)
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ACID
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?? ???? ? ?? ????
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ALK
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BIO
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???? ??(e.g. flu virus, rabies virus)
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POI
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?? (e.g. strychnine, alpha-Amanitin)
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RA
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??? ?? (e.g. plutonium, cobalt-60)
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RAD
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CRY
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???, ??? ??. (e.g. liquid nitrogen)
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CRYO
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