Hazard Communication (HAZCOM) Pictograms

Pictograms were developed to simplify hazard communication on chemical container labels and safety data sheets (SDSs), regardless of Manufacture or country or origin. The pictograms are based on images and symbols employees throughout the world would recognize and understand.

  • All pictograms will be a diamond on a point with a red border and a black image associated with the hazard in the center.
  • Multiple pictograms appear on a product label. One pictogram will appear for a health hazard and possibly multiple pictograms for the various physical hazards
  • The nine pictograms are listed below the hazard class and an example chemical for each.



Hydrofluoric Acid

• Used for etching in silicon semiconductor production and oil refining
• Corrosive to metal

IrritantIrritant or sensitizer
(Exclamation Mark)

Acetic Acid

• Used in film development and as a solvent in various industries
• Skin irritant

Health hazardHealth Hazard


• Used in embalming and as a bacterial and viral disinfectant
• Known carcinogen, lunch and skin irritant, and sensitizer

Acute Toxicity
(Skull & Bones)


• Used as a solvent in many industries
• May be toxic to kidney, liver, and heart


Hydrogen Sulfide

• A naturally occurring chemical found in natural gas during oil drilling and used in paper and pulp production
• Flammable gas

(Exploding Bomb)

Ammonium Perchlorate

• Used in rocket fuel and some adhesives
• Oxidizer and explosive hazard under certain conditions

Gas under pressureGas Under Pressure
(Gas Cylinder)


• Used in the medical field for life support and in iron smelting
• Contents under pressure

(Flame Over Circle)

Silver Oxide

• Used in portable batteries
• Strong Oxidizer

Environmental ToxicityEnvironmental Toxicity


• A component of refined gasoline
• Toxic to fish and aquatic invertebrates

**Environmental Toxicity pictogram is Non-Mandatory
**When applicable, these pictograms will be located on labels and also on SDSs of hazardous chemicals that have been classified

Pictograms and hazards