Reading a Material Safety Data Sheet
Effective Protection You Can Depend On The Material Safety
Data Sheet, or MSDS, is written information that can help
protect you from overexposure to chemicals you find on the
job. The MSDS is part of your company's Hazard Communications
Program. Each company can design its own MSDS form, and the
sections may be in different order. But, the basic kinds of
information on any MSDS will be the same.
- Chemical Name
Lists the identity of the substance (the name on the label),
any trade names date the MSDS was prepared, the name and address of the
manufacturer, and usually a phone number for emergencies
and more information.
- Hazardous Ingredients/Chemical Identity
Includes names of substances in the chemical that might be
dangerous, and safe exposure limits such as Permissible
Exposure Limit or PEL (set by OSHA) or the Threshold Limit
Value or TLV. Also lists common names for the chemical.
- Physical Characteristics
Describes many physical qualities of the chemical, and lets
you know what's usual or safe. For example, how the chemical
looks and smells; boiling and melting temperatures (important
in case a chemical might become a gas you could breathe);
evaporation rate (known as percent volatile); how easily
the chemical dissolves; and how heavy it is (this tells
you if it will sink, float, or dissolve in water.)
- Fire and Explosion Data
Tells you at what temperature a liquid gives off enough
flammable vapor to ignite (flash point). Lets you know if
the chemical is flammable (catches fire below 100 degrees
F) or combustible (catches fire above 100 degrees F). Also
lists extinguishing media-what will put out the fire
safety, such as water, dry chemical, carbo9n dioxide and
halon.
- Reactivity
Describes what happens if this chemical comes in
contact with air, water, or other chemicals. Describes
conditions (like heat) or materials (like water) that can
cause the chemical to react violently due to the
instability or incompatibility to common substances or
circumstances. "Incompatibility" refers to materials that
may cause the chemical to burn, explode, or release
dangerous gases when mixed. "Instability" refers to the
environmental conditions such as heat or direct sunlight
that may cause a dangerous reaction.
- Health Hazards
Lists ways the chemical might enter your body, like splashing
on your skin or being inhaled as vapor as well as possible
symptoms of overexposure such as a skin rash, burn,
headache, or dizziness. Lets you know if overexposure
might make existing medical conditions worse, and describes
first aid and emergency procedures.
- Usage, Handling, And Storage
Describes how to clean up an accidental spill, leak, or
release, including special procedures. Tells you how to
handle, store and dispose of chemicals safely. Remember,
if there is an accident, notify your supervisor
immediately, and take care of it yourself only if you are
trained to do so and are wearing the proper personal
protection equipment. Notify campus police by dialing 911,
or the safety office at extension 7233 to report large
spills or leaks.
- Special Protection And Precautions
Explains the kind of hand, body, eye, and respiratory
protection (Personal Protective Equipment) to use when
working with the chemical. Special procedures, extra health
or safety information, signs that should be posted, and
other information not covered in other sections of the
MSDS.
Required Information on a MSDS:
(A) The Chemical Name
(B) Any Common Names
(C) The CAS Number of the "Hazardous Substance"
(D) The Potential for Explosion
(F) The Potential for Reactivity
(G) Acute and Chronic Health Effects
(H) Potential Routes of Exposure
(I) Symptoms of Overexposure
(J) Proper Precautions
(K) Handling Practices
(L) Necessary Personal Protective Equipment
(M) Other Safety Precautions in the Use of or Exposure to
the "Hazardous Substance"
(N) Emergency Procedures for Spills
(O) Emergency Procedures for Fire
(P) Disposal Procedures
(Q) First Aid Procedures Risks Posed by the "Hazardous
Substance"
(R) A Description in Lay Terms of the Specific Potential Health
Hazard
(S) The Month and Year the Information was Compiled
(T) Name and Address of the Manufactures Responsible for Preparing
the Information
Revised: 5/29/2009 LL