CHEM 21.32 - NFPA Diamond, chemical hazard signs and ghs pictograms

NFPA Diamond

health hazard - no hazard

blue - 0

health hazard - can cause significant irritation

blue - 1

health hazard, can cause temporary incapacitation or residual injury

blue - 2

health hazard, can cause serious or permanent injury

blue - 3

health hazard, can be lethal

blue - 4

flammability hazard - will not burn

red - 0

flammability hazard, must be preheated before ignition can occur

red - 1

flammability hazard - must be heated or high ambient temperature to burn

red - 2

flammability hazard - can be ignited under almost all ambient

red - 3

flammability hazard, will vaporize and readily burn at normal temps

red - 4

special hazard - alkaline

white - ALK

special hazard - acidic

white - ACID

special hazard - corrosive

white - COR

special hazard - oxidizing

white - OX

special hazard - radioactive

white -

special hazard - reacts violently or explosively with water

white -

special hazard - reacts violently or explosively with water and oxidizing

white -

instability hazard - stable

yellow - 0

instability hazard - normally stable. high temperatures make unstable

yellow - 1

instability hazard - violent chemical change at high temperatures or pressures

yellow - 2

instability hazard - may explode at high temp or shock

yellow - 3

instability hazard - may explode at normal temps and pressures

yellow - 4

irritant

poisonous

flammable

corrosive

explosive

oxidizing chemical

oxidizers

flammables, self reactives, pyrophorics, self-heating, emits flammable gas, organic peroxides

explosives, self reactives, organic peroxides

acute toxicity (severe)

corrosives

gases under pressure

carcinogen, respiratory sensitizer, reproductive toxicity, target organ toxicity, mutagenicity, aspiration toxicity

environmental toxicity

irritant, dermal sensitizer, acute toxicity, narcotic effects, respiratory tract, irritation