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 Má»™c DÆ°Æ¡ng

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