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MODULE 1UNIT 3

Basic Hazardous Materials Terms

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Unit 3 Learning Objectives

At the conclusion of this unit the student will define the terminology used for appropriate assessment of a hazardous material. The Student will use learned terminology when referencing resource books for further assessment.

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Student Performance Objectives

• Describe the three physical states of matter• Describe the terminology related to material

characteristics.• Describe the terms “lower explosive limit”

and “upper explosive limit”.• Describe the process used to identify the “pH”

of a material.• Describe the reactivity terms of materials.

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Terminology

• Physical Properties Terms• Flammability Terms• Corrosivity Terms• Toxicity Terms• Reactivity Terms

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Physical Properties Terms• Physical State• Appearance• Boiling Point• Chemical Reactivity• Melting Point

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Physical Terms (cont.)

• Water Solubility• Specific Gravity• Vapor Density• Vapor Pressure

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Flammability Terms

• Auto-ignition Temperature• Flash Point• Lower Explosive Limit• Upper Explosive Limit

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Corrosivity Terms• Corrosive/Corrosive Material• pH• Acid• Alkali (Base)

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Toxicity Terms

• Toxicology• Acute Effect• Chronic Effect• Allergic Reaction• Asphyxiant

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Toxicity Terms (cont.)

• Carcinogen• Irritant• Sensitizer• Convulsant

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Toxicity Terms (cont.)• LC50• LD50• TLV TWA• PEL• STEL

• C• IDLH • Toxic Products of

Combustion

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Reactivity Terms

• Explosive• Pyrophoric (Air Reactive)• Polymerization• Water Reactive• Hypergolic

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Unit 3 Review Quiz