PRT 110: Lesson 6 Hazardous Chemical Identification: HAZCOM, Toxicology, and DOT

Lesson Plan


  • Describe the Hazard Communication standard.
  • Identify the physical properties and hazards associated with handling, storing, and transporting chemicals.
  • Describe physical and health hazards associated with exposure to chemicals.
  • Describe the key elements of a material safety data sheet.
  • Describe a hazardous chemical inventory list.
  • Explain the purpose of a written Hazard Communication program.
  • Identify methods used to protect process technicians from hazardous chemicals.
  • Identify safety signs, tags, and warning labels utilized by process technicians.
  • Describe toxicology and the terms associated with it.
  • Describe the material classification system for DOT.
  • Describe the Hazardous Materials Identification System.
  • Describe the National Fire Prevention Association labeling system.
GHS hazard signs
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Read chapter 6 of the textbook and review the following videos.

Introduction to Hazard Identification for Operators and Maintenance Workers

GHS HazCom Training Video

Free OSHA Training Tutorial – Understanding GHS Safety Data Sheets (SDS’s)

NFPA Journal – Hazard Labeling Guidelines in NFPA 704


  1. Complete the homework associated with the reading.
  2. Complete the assigned activity.
  3. Complete the activity quiz.
  4. Complete the chapter quiz.

Activity Quiz

AMIT 129: Lesson 13 Chemical Hazards


Upon completion of this lesson students should be able to:

  • List the physical hazards of chemicals.
  • Explain the health hazards of chemicals.
  • Demonstrate how to use of Material Safety Data Sheet (MSDS).
  • Explain the meaning of chemical label colors.

Reading & Lecture

Chemical Hazard

Any chemical that can cause illness, injury or an emergency

Chemical Hazards

  • Physical
  • Health


Know what you are working with and how to protect yourself and others.

Physical Hazard

  • Explosives
  • Compressed Gas
  • Flammable
  • Unstable
  • Water Reactive
  • Oxidizers
  • Can cause cancer
  • Are toxic
  • Cause harm to your skin, organs or nervous system
  • Corrosive- such as acids
  • Cause allergic reactions after repeated exposure

Standard Hazard Warning - Flame Standard Hazard Warning - Gas cylinder Standard Hazard Warning - Corrosion Standard Hazard Warning - Explosion Standard Hazard Warning - Flame over circle Standard Hazard Warning - Healthhazard Standard Hazard Warning - Skull Standard Hazard Warning - Environment

Hazard Communication Standard Pictograms as presented by OSHA



Physical hazards are:

  • Used only by trained employees
  • Stored in a safe manner
  • Never mixed with other  chemicals unless by an approved procedure

Chemicals can enter the body through:

  • Your lungs- if you breath fumes, mists or dust
  • Your skin- if liquid or dust touches or spills on you or splashes in your eyes
  • Your mouth- if you eat after handling chemicals
  • Accidental swallowing of chemicals
Chemical hazard entryways
Image license CC by Kemosabe Mộc Dương

Hazard Communication

  • Written information on hazards
  • Lists  Chemicals that is used and their hazard
  • System for ensuring chemical are labeled
  • Material Safety Data Sheet (MSDS) for each chemical
  • Lists of responsible persons for the program
  • Safety training methods
  • Chemical safety information

Signs of PPE

  • Signs may be used to identify hazards and required protection
  • The information may also be on the manufacturer’s label

Material Safety Data Sheets

  • Reference that identifies chemical characteristics and hazards
  • Safety Data Sheets are available for ALL of the hazardous materials present in your work areas
  • Must be accessible to all employees whenever they are in their work area

NFPA labeling system diagram