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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)
0 ?? ?? ??. (e.g. ?, ??)
1 ?? ??? ???? ???. ???? 93.3 °C ??? ??. (e.g. ???).
2 ????? ?? ?????? ???? ???? ???. ???? 37.8 °C ???? 93.3 °C ??? ??. (e.g. ??)
3 ???? ?????? ??? ? ?? ??/???. ???? 22.8 °C ???? 37.8 °C ??? ??. (e.g. ???, ???).
4 ???? ??????? ?? ?? ??? ?????, ??? ? ???? ?? ???? ??. ???? 22.8 °C ?? ??? ??. (e.g. ????, ????, ????).
?? ??? health hazards (blue)
0 ??? ??? ?? ??.(e.g. ??, ??)
1 ?? ? ??? ??? ??? ? ??.(e.g. ???)
2 ??? ??? ?? ??? ?? ??? ???? ??? ??? ??? ??? ? ??. ?? ??? ? ??? ?? ????? ???? ??? ? ??.(e.g. ???? ??)
3 ?? ?? ??? ???? ??? ?? ??? ??? ??? ? ??. ??? ??? ?.(e.g. ??? ??, ??, ????)
4 ?? ?? ??? ???? ?? ?? ??? ??? ??? ? ??. ??? ?? ?? ???? ???? ??? ? ??.(e.g. ???? ??, ???,??????? ??, ????? ???)
????/??? Instability/reactivity (yellow)
0 ??? ????? ????? ????, ?? ???? ??.(e.g. ??, ??)
1 ????? ?????, ?? ?? ?? ??? ??????? ?? ???? ??? ???? ???? ??(e.g. ???)
2 ???? ?? ?? ? ??? ??? ??? ? ??, ??? ??? ??? ? ?? ??. ?? ?? ????? ?? ? ?? ???? ?? ??.(e.g. ??, ???)
3 ?? ???? ??? ??? ???? ???? ??. ?? ??? ???? ?? ??.(e.g. ?? ???)
4 ???? ?? ????? ??? ??? ??? ? ?? ??.(e.g. ????????, ??? ??)
?? ??? Special notice (white)
OX ??? ??, ???(e.g. ?? ???).
W ?? ??? ? ???, ?? ? ??? ??? ??? ? ??. ?????(e.g. ???, ??).
SA ?? ??(Asphyxiant gas)
?? Non-standard symbols (white)
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).
COR ???, ??, ???.(e.g. sulfuric acid, potassium hydroxide)
ACID ?? ???? ? ?? ????
ALK
BIO ???? ??(e.g. flu virus, rabies virus)
POI ?? (e.g. strychnine, alpha-Amanitin)
RA ??? ?? (e.g. plutonium, cobalt-60)
RAD
CRY ???, ??? ??. (e.g. liquid nitrogen)
CRYO
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