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Science 14
WHMIS symbols and definitions
8
Science
10th Grade
02/14/2012

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Term
COMPRESSED GAS

This class includes compressed gases, dissolved gases, and gases liquefied by compression or refrigeration.
Definition
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Term
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.
Definition
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Term
OXIDIZING MATERIAL

These materials increase the risk of fire if they come in contact with flammable or combustible materials.
Definition
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Term
POISONOUS AND INFECTIOUS MATERIAL
Div. 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.
Definition
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Term
POISONOUS AND INFECTIOUS MATERIAL
Div. 1 Material Causing Immediate and Serious Toxic Effects

These materials can cause death or immediate injury when a person is exposed to small amounts.
Definition
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Term
POISONOUS AND INFECTIOUS MATERIAL
Div. 3 Biohazardous Infectious Material

These materials contain an organism that has been shown to cause disease or to be a probable cause of disease in persons or animals.
Definition
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Term
CORROSIVE MATERIAL

This class includes caustic and acid materials that can destroy the skin or eat through metals.
Definition
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Term
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.
Definition
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