Hazardous Communication &
Global Harmonized System Training

Symbols & Their Meanings

The knowledge assessment test will award you 2 hours of NY State CE credit. A certificate will be emailed to you upon successful completion.

Take the Test
Health Hazard Symbol

Health Hazard
The red frame around the white diamond contains a black silhouette of a person’s head and torso with a white star shape spreading through the chest area. This symbol indicates:

  • Carcinogen
  • Mutagenicity
  • Reproductive Toxicity
  • Respiratory Sensitizer
  • Target Organ Toxicity
Gas Cylinder Symbol

Gas Cylinder
The red frame around the white diamond contains a black shape like a rolling pin missing one handle. This symbol indicates:

  • Gases Under Pressure
Flame Over Circle Symbol

Flame Over Circle
The red frame around the white diamond contains a black circle resting on a black line with black flames on top of the black circle. It looks like the circle is on fire. This symbol indicates:

  • Oxidizers
Flame Symbol

Flame
The red frame around the white diamond contains a white flame within black flames above a black line. This symbol indicates:

  • Flammables
  • Pyrophoric
  • Self-Heating
  • Emits Flammable Gas
  • Self-Reactives
  • Organic Peroxides
Corrosion Symbol

Corrosion
The red frame around the white diamond contains an image of two test tubes. One tube pours dripping liquid onto a solid black line, and the other tube drips liquid onto a hand. Both the solid line and hand image are eaten away where the liquids splash, emitting fumes. This symbol indicates:

  • Skin Corrosion / Burns
  • Eye Damage
  • Corrosive to Metals
Environment Symbol

Environment (Non-Mandatory for OSHA)
The red frame around the white diamond contains a black leafless tree silhouette and an upside-down fish image, both looking dead. This symbol indicates:

  • Acute and/or Chronic Aquatic Toxicity
Exclamation Mark Symbol

Exclamation Mark
The red frame around the white diamond contains a large black exclamation point in the center. This symbol indicates:

  • Irritant (Skin and Eye)
  • Skin Sensitizer
  • Acute Toxicity
  • Narcotic Effects
  • Respiratory Tract Irritant
  • Hazardous to Ozone Layer (Non-Mandatory)
Exploding Bomb Symbol

Exploding Bomb
The red frame around the white diamond contains a black round shape breaking apart with radiating black lines and fragments being ejected. This symbol indicates:

  • Explosives
  • Self-Reactive
  • Organic Peroxides
Skull and Crossbones Symbol

Skull and Crossbones
The red frame around the white diamond contains the image of a human skull with two bones crossed at an angle behind it. This symbol indicates:

  • Acute Toxicity (Fatal or Toxic)

Please Review The Following Study Guide and Materials

GHS Hazard Communication Study Guide
GHS Written Hazmat Plan Template
GHS Sample Label

The knowledge assesment test will award you 2 hours of NY State CE credit. A certificate will be emailed to you upon successful completion.

Take the Test
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