Health Hazards
Nine Classes of Hazardous Materials
Physical and Chemical Properties
ERG
Acronyms
100

the risk of a substance entering the body through the skin or eyes, leading to potential health effects.

What are Absorption Hazards?

100

Transport Canada Class 3

What are Flammable Liquids?

100

The temperature at which a solid changes to a liquid at normal atmospheric temperature.

What is melting point?

100

Orange pages in ERG

What are guide pages?

100

SDS

What is Safety Data Sheets?

200

dangers associated with breathing in contaminated air, such as dust, fumes, vapors, or other airborne substances.

What are Inhalation Hazards?

200

The class number of Oxidizers and Organic Peroxides

What is Class 5?

200

substance that has a definite shape and size.

What is a solid?

200

Page colour that identifies a material by its product name.

What are the blue pages?

200

TIH

Toxic Inhalation Hazard

300

risks associated with introducing substances into the body through punctures, cuts, or abrasions,

What are Injection Hazards?

300

The class that has a white placard containing a skull and crossbones.

What is Class 6?

300

the weight of pure vapour or gas compared to equal volume of air.

What is vapour density?

300

The yellow pages help identify the material by its_______.

What is UN number?

300

BLEVE.

What is a Boiling Liquid Expanding Vapour Explosion?
400

the risk of harm caused by consuming a substance through the mouth and swallowing it.

What is Ingestion Hazards?

400

An elevated temperature material will be with this placard class.

What is Class 9?

400

Substance changes directly from a solid to gas without going into a liquid state in between.

What is sublimation?

400

A spill of 55 gallons or less.

What is a small spill?

400

APIE

What is a simple four-step response model that can guide responders’ actions at hazardous materials incidents?

500

Occur rapidly as a result of short-term exposures, and are of short duration

What is Acute?

500

This class requires specialized monitoring and detection equipment to determine is presence.

What is Class 7 - Radioactive Material?

500

the measure of the internal friction of a liquid at a given temperature.

What is Viscosity?

500

The number of common Toxic Inhalation Hazards found in Table 3 of ERG Green pages.

What is 6.

500

GEBMO

What is General Hazardous Materials Behaviour Model.