Science Fair Project Encyclopedia
WHMIS (Workplace Hazardous Materials Information System) is a detailed system of labelling and information designed to inform workers who deal with hazardous goods. It is enforced by a number of governmental agencies in different localities.
There are two basic types of label from WHMIS; the supplier label and the workplace label. Both have symbols on them, but the supplier label is far more detailed.
All WHMIS labels have symbols on them; a list follows:
- A flame - The substance is flammable and should be kept away from sparks or flame. It might also be explosive.
- A flaming O - The substance is an oxidant.
- Drops from a vial corroding a hand and a metal bar - The substance is corrosive. Care should be kept to keep it away from skin and to prevent spillage.
- A skull and crossbones - The substance is poisonous and should not be taken internally.
- A T-like symbol with a dot below - The substance has "other toxic effects"
- An R which is being destroyed with a test tube in it - The substance is dangerously reactive with other substance.
- A tube-like canister - A compressed gas is contained
- A circle with three claw-like things coming out of it - Biohazard
WHMIS labels contain reference to the MSDS sheet associated with the product.
Material Classifications There are 6 classes of WHMIS materials:
- Class A Compressed Gas
- Class B Flammable and Combustible Material
Division 1: Flammable Gas Division 2: Flammable Liquid Division 3: Combustible Liquid Division 4: Flammable Solid Division 5: Flammable Aerosol Division 6: Reactive Flammable Material
- Class C Oxidizing Material
- Class D Poisonous and Infectious Material
Division 1: Materials causing immediate and serious toxic effects Subdivision A: Very toxic material Subdivision B: Toxic material Division 2: Materials causing other toxic effects Subdivision A: Very toxic material Subdivision B: Toxic material Division 3: Biohazardous Infection Material
- Class E Corrosive Material
- Class F Dangerously Reactive Material
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details