1. WHMIS
Lesson 4

2. WHMIS
The Workplace Hazardous Materials Information System (WHMIS) is Canada's national hazard communication standard.
The key elements of the system are cautionary labelling of containers of WHMIS "controlled products", the provision of material safety data sheets (MSDSs) and worker education programs

3. WHMIS Symbols CLASS A: COMPRESSED GAS
This class includes compressed gases, dissolved gases, and gases liquefied by compression or refrigeration.

4. WHMIS Symbols CLASS B: FLAMMABLE AND COMBUSTIBLE MATERIAL
This class includes solids, liquids, and gases capable of catching fire in the presence of a spark or open flame under normal working conditions.

5. WHMIS Symbols CLASS C: OXIDIZING MATERIAL
These materials increase the risk of fire if they come in contact with flammable or combustible materials.

6. WHMIS Symbols
CLASS D: POISONOUS AND INFECTIOUS MATERIAL Division 1: Materials Causing Immediate and Serious Toxic Effects
These materials can cause death or immediate injury when a person is exposed to small amounts. Examples: sodium cyanide, hydrogen sulphide

7. WHMIS Symbols
CLASS D: POISONOUS AND INFECTIOUS MATERIAL Division 2: Materials Causing Other Toxic EFFECTS
These materials can cause life-threatening and serious long-term health problems as well as less severe but immediate reactions in a person who is repeatedly exposed to small amounts.

8. WHMIS Symbols
CLASS D: POISONOUS AND INFECTIOUS MATERIAL Division 3: Biohazardous Infectious MATERIAL
These materials contain harmful micro- organisms that have been classified into Risk Groups 2, 3, and 4 as determined by the World Health Organization (WHO) or the Medical Research Council of Canada.

9. WHMIS Symbols CLASS E: CORROSIVE MATERIAL
This class includes caustic and acid materials that can destroy the skin or eat through metals. Examples: sodium hydroxide, hydrochloric acid, nitric acid

10. WHMIS Symbols CLASS F: DANGEROUSLY REACTIVE MATERIAL
These products may self-react dangerously (for example, they may explode) upon standing or when exposed to physical shock or to increased pressure or temperature, or they emit toxic gases when exposed to water.

11. Two Types of WHMIS Labels
WHMIS labels include first aid information and details about storage, handling, and disposal. There are two types of WHMIS labels: - Supplier labels - Workplace labels

12. Supplier Labels
Supplier labels are used by the people who make each chemical.
Supplier labels have a strict format.
Hashed marked identifier label
Written in English and French
Supplier Name
Precautionary measures
Risk Phrases
First Aid Treatment
Name of product
Hazard Symbols
Statement referring to MSDS

13. Supplier Labels

14. Workplace Labels
After chemicals are rebottled, a workplace label my replace the Supplier label. Workplace labels are allowed to have different formats.
A Workplace label contains less information than the Supplier label, but it still has enough information to help you use the chemical safely.

15. Workplace Labels Requirements Product name
Information for safe handling of the product
Statement referring to MSDS
WHMIS hazard symbols (optional)

16. Working with the chemicals