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Appendix
Appendix A. Common Safety Symbols
Appendix C. Substances with Greater Hazardous Nature
Than Educational Utility
Appendix D. Substances with a Hazardous Nature,
But May Have Potential Educational Utility .
Appendix E. Incompatible Chemicals
Appendix F. Recommended Safety and Emergency Equipment
for the Laboratory
Appendix G. How Does a Chemical Enter the Body?
Appendix H. What are Exposure Limits?
Appendix I. General Guidelines to Follow in the Event of a Chemical Accident or Spill
Appendix J. Understanding an MSDS
Appendix K. Sample MSDS
Appendix L. Web Site Resources
Appendix M. Glossary
Appendix B. National Fire Protection Association
Hazard Labels
The National Fire Protection Association (NFPA) has developed a visual guide (right) for a number of chemicals pertinent to the MSDS. The ANSI/NFPA 704 Hazard Identification system, the NFPA diamond, is a quick visual review of the health hazard, flammability, reactivity, and special hazards a chemical may present.
The diamond is broken into four sections (blue, red, yellow, and white). The symbols and numbers in the four sections indicate the degree of hazard associated
with a particular chemical or material.
Health Hazard (Blue)
4 |
Danger |
May be fatal on short exposure. Specialized protective equipment
required |
3 |
Warning |
Corrosive or toxic. Avoid skin contact or inhalation |
2 |
Warning |
May be harmful if inhaled or absorbed |
1 |
Caution |
May be irritating |
0 |
|
No unusual hazard |
Flammability (Red)
4 |
Danger |
Flammable gas or extremely flammable liquid |
3 |
Warning |
Combustible liquid flash point below 100 °F |
2 |
Caution |
Combustible liquid flash point of 100° to 200 °F |
1 |
|
Combustible if heated |
0 |
|
Not combustible |
Reactivity (Yellow)
4 |
Danger |
Explosive material at room temperature |
3 |
Danger |
May be explosive if shocked, heated under confinement or mixed with water |
2 |
Warning |
Unstable or may react violently if mixed with water |
1 |
Caution |
May react if heated or mixed with water but not violently |
0 |
Stable |
Not reactive when mixed with water |
Special Notice Key (White)
W |
Water Reactive |
OX |
Oxidizing Agent |
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Appendix
(80 pages, 1.35MB)
