Template:NFPA 704/doc

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NFPA 704
fire diamond
{{{caption}}} goes here

See basic NFPA 704 diamond documentation below.

This box has one additional parameter: |caption=Caption goes here

This template produces a NFPA 704 fire diamond 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.


{{NFPA 704 diamond
 | H          =
 | F          =
 | I          =
 | S          =
 | ref        =
 | showimage  =
 | background =
Health code, 0-4 or - (hyphen for blank)
Flammability code
Instability (reactivity) code ("R=" is also allowed)
Special code W, OX, W+OX, ..., or - (hyphen for blank)
References. Add the <ref> ... </ref> tags.
Set =no to show text instead ('RA' only. Default: =yes, show image)
background color (e.g., =yellow or =#ff7623)

Input options

Main rule: if the quarter must be blank, input is the hyphen, -. Do not depend on default behavior in this situation.

Basic 0–4 and - (hyphen)

for |H=, |F=, |I=
=0 =1 =2 =3 =4 =- (hyphen)

Parameters |H=, |F=|I= accept codes 0, 1, 2, 3, 4, -. Code - (hyphen) produces a blank ("no hazard code").

A blank can be set (enforced) by entering =-, a hyphen. This is the preferred way to reflect what the source states (don't depend on the default blank in this situation).

Default code (blank)

= <blank>

All four codes default to blank, that is: no NFPA code is present or shown. There is no specific text (just a link to the NFPA color section). Note that a blank is not the same as code "0". Code "0" is an explicit statement, while a blank is the absence of any statement.

A blank can also be enforced by entering =- (hyphen). This is the preferred way to reflect what the source states (do not depend on default).

From the input, spaces and even newlines (all whitespace) are treated as blank. Note that =&nbsp; code produces an error, but entering the nbsp character (>= <) is accepted as a space (blank).

Special hazard options

S=W S=OX S=W+OX S=SA S=- (hyphen)
Special hazard RA: Radioactive. E.g. plutonium
Special hazard RA: Radioactive. E.g. plutonium

For W enter |S=W.

For W OX enter |S=W+OX, |S=W OX or |S=WOX.

The "Special" quarter is sometimes called "Other".

Unknown codes (error)

The diamond template checks for unknown codes.

=abc =&nbsp; cat=no

H=abc NFPA code error
F=klm NFPA code error
I=pqr NFPA code error
S=XYZ NFPA code error

H=  NFPA code error
F=  NFPA code error
I=  NFPA code error
S=&NBSP; NFPA code error

Articles with unknown codes are listed for maintenance (correction) in Category:Articles with unknown NFPA 704 code (0). Other pages (like this documentation) are not categorized, but have a message instead. This categorizing can be switched off by setting |cat=no

Note that =&nbsp; code produces an error, but entering the nbsp character (= ) is accepted as a space (blank).

Adding references

References can be added using |ref=.

|ref=<ref>{{cite web|url=http://chemlabs.uoregon.edu/Safety/NFPA_White.html|title=More on white codes}}</ref>

The <ref> ... </ref> tags should be added. Multiple references can be entered. Depending on cell width, the links show above or next to the diamond. While technically possible to enter plain text, this is not supported (and this could be disallowed in the future).

"some title".

List of codes

Code descriptions ()
input type quarter code text
code H 0 Health 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g. sodium chloride
code H 1 Health 1: Exposure would cause irritation but only minor residual injury. E.g. turpentine
code H 2 Health 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroform
code H 3 Health 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gas
code H 4 Health 4: Very short exposure could cause death or major residual injury. E.g. VX gas
code F 0 Flammability 0: Will not burn. E.g. water
code F 1 Flammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oil
code F 2 Flammability 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g. diesel fuel
code F 3 Flammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasoline
code F 4 Flammability 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g. propane
code I 0 Instability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogen
code I 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 I 3 Instability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxide
code I 4 Instability 4: Readily capable of detonation or explosive decomposition at normal temperatures and pressures. E.g. nitroglycerin
code S OX Special hazard OX: Oxidizer. E.g. potassium perchlorate
code S 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. E.g. smallpox virus
code S COR Special hazard COR: Corrosive; strong acid or base. E.g. sulfuric acid, potassium hydroxide
code S CRYO Special hazard CRYO: Cryogenic
code S POI Special hazard POI: Poisonous
code S RA Special hazard RA: Radioactive. E.g. plutonium
hyphen H - Health (blue): no hazard code
hyphen F - Flammability (red): no hazard code
hyphen I - Instability (yellow): no hazard code
hyphen S - Special hazards (white): no code
blank H <blank> Health (blue): no hazard code
blank F <blank> Flammability (red): no hazard code
blank I <blank> Instability (yellow): no hazard code
blank S <blank> Special hazards (white): no code
no letter
no letter 3
no letter 9
no letter WOX
unknown H xyz
unknown F xyz
unknown I xyz
unknown S xyz

Color style

Option |background=green. Default is transparent.

Colors used

Blue Red Yellow White
1 4 3 SA
#6691ff #ff6666 #fcff66 #ffffff

Better not to use RGB colors named blue, red, yellow, because these produce a bad contrast with the text.

Template data

This is the TemplateData documentation for this template used by VisualEditor and other tools.

NFPA 704

No description.

Template parameters

Health (blue)H

no description

Suggested values
0, 1, 2, 3, 4, -
Flammability (red)F

no description

Suggested values
0, 1, 2, 3, 4, -
Instability, Reactivity (yellow)I R

no description

Suggested values
0, 1, 2, 3, 4, -
Special code (white)S

no description

Suggested values

no description


no description


shows S image when available


no description


Known issues

  • In mobile view, positioning of the code numbers might be off
  • Is there an ENGVAR-like switch needed, eg for the order of °C - °F temperatures? (Currently, °C is first)
  • For documentation, could use a diamond with the four letters in the quadrants.
  • The non-standard S (on white) codes should be complete, and maybe listed for attention.

Tracking category

See also


These references will appear in the article, but this list appears only on this page.
The references are from the demos in this documentation.