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WHMIS Symbols

WHMIS Supplier labels will always have one or more hazard symbols on them.

You should get to know what type of hazard each of these symbols represent

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A substance that at room temperature is a gas

The container is pressurized

Dangerous because it may explode or become a projectile if heated, damaged, dropped

Oxygen Tank

Fire Extinguisher

Welding Tanks

Compressed GasClass A:Class A:

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Solid, liquid or gas that may ignite / burn easily

Gives off a vapour which can be ignited

Keep away from sources of heat, sparks, flames friction –use and storage must be well ventilated

Lacquer

Thinner

Mineral Spirits

Combustible FlammableClass B:

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Solid, liquid or gas which cause other substances to burn by supplying oxygen - Not combustible itself

Keep away from flammable materials

Do not allow spills, avoid contact and store properly

Oxidizing

Liquid Chlorine

Ozone

Chromic Acid

Class C:

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May cause harm with only a short exposure or single use – immediate effects are called acute

Can range from less severe headaches, cough or irritation to severe effects, coma or death

Poisonous Infectious Immediate Effects

Degreaser

Acrylonitrile

Carbon Monoxide

Class D–1:

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May cause harm from prolonged or repeated exposure – long term effects are called chronic

May cause cancer or other diseases

Poisonous Infectious Other Toxic Effects

Non-slip Belt Dressing

Mercury

Asbestos

Class D–2:

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Living organisms that may cause serious infectious disease – known as biological agents

Living organisms: fungus, bacteria, salmonella, viruses, mold, anthrax

In the workplace: Discarded bandages, Mold in HVAC

Poisonous Infectious BiohazardousClass D–3:

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Substance that will cause severe irritation or tissue damage or destruction of steel

Skin or eye contact, inhalation of gases or fumes

Can be fatal if absorbed though the skin

Solid – potassium hydroxide powder

Liquid – acetic acid

Gas – ammonia flourine

CorrosiveClass E:

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Substance that may react vigorously or explode if agitated, heated or dropped

May react with water to produce a poisonous gas

Polymerization, decomposition and condensation

Master A pipe thread sealant

Aluminum Chloride

Styrene

Dangerously ReactiveClass E: