From OSHA.gov: As of June 1, 2015, the Hazard Communication Standard (HCS) will require pictograms on labels to alert users of the chemical hazards to which they may be exposed. Each pictogram consists of a symbol on a white background framed within a red border and represents a distinct hazard(s). The pictogram on the label is determined by the chemical hazard classification.

HCS Pictograms and Hazards

Health Hazard Carcinogen Mutagenicity Reproductive Toxicity Respiratory Sensitizer Target Organ Toxicity Aspiration Toxicity	Flame Flammables Pyrophorics Self-Heating Emits Flammable Gas Self-Reactives Organic Peroxides	Exclamation Mark Irritant (skin and eye) Skin Sensitizer Acute Toxicity Narcotic Effects Respiratory Tract Irritant Hazardous to Ozone Layer (Non-Mandatory)
Gas Cylinder Gases Under Pressure	Corrosion Skin Corrosion/Burns Eye Damage Corrosive to Metals	Exploding Bomb Explosives Self-Reactives Organic Peroxides
Flame Over Circle Oxidizers	Environment   (Non-Mandatory) Aquatic Toxicity	Skull and Crossbones Acute Toxicity (fatal or toxic)

Important!

Please notify your instructor if you are pregnant.