الگو:NFPA 704 diamond

Flammability (red): no hazard codeHealth (blue): no hazard codeReactivity (yellow): no hazard codeSpecial hazards (white): no codeNFPA 704 four-colored diamond
توضیحات الگو[نمایش] [ویرایش] [تاریخچه] [پاکسازی]

Usage

{{NFPA 704
 | Health= 0'''Bold text'''
 | Flammability= 1'''Bold text'''
 | Reactivity= 0'''Bold text''' 
 | Other=
}}

|Health=, |Flammability=, |Reactivity= and |Other= are all optional. Use only the ones that are appropriate for the situation. Typically, the Blue, Red and Yellow sections will be filled in; if the hazard is not relevant, or it is known that there is no hazard in a category, assign a code of "0".

Example:

{{NFPA 704
 | Health=0
 | Flammability=1
 | Reactivity=0
 | Other=
}}
Flammability (red): no hazard codeHealth (blue): no hazard codeReactivity (yellow): no hazard codeSpecial hazards (white): no codeNFPA 704 four-colored diamond
Color Meaning Values
Blue Health
0–4
Red Flammability
0–4
Yellow Reactivity*
0–4
White Other**
OX, W

* Prior to 1996, this section was titled "Reactivity". In current NFPA literature the yellow section is called "Instability".
** Only OX (markup: OX) and W (markup: <s>W</s>) are NFPA approved symbols, although various iconic graphics are in common use to denote acid, alkali, corrosive, radiation, poison and explosive hazards.
***When you use both OX and W, use OX, W (markup: <small>OX, <s>W</s></small>).

See also

See additional discussion about the meaning of the various codes at لوزی آتش and www.vcu.edu/oehs/chemical/labsafe/labsafetysign.pdf.