Page 140 - School Infection Control Handbook - 2010

Appendix B: Selection of Products, Dispensing Equipment, and Application Systems
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Appendix B.3. Interpreting Information from Hazardous Materials Rating Systems:
National Fire Protection Association and Hazardous Materials Information System
Note: This document provides a detailed explanation of the National Fire Protection Association
(NFPA) and the Hazardous Materials Information System (HMIS). It complements Chapter 4.E.
Using Information from Hazardous Materials Rating Systems for Product Selection.
Interpretation of colored symbols – Each system rates health (blue box), flammability (red
box), and instability or physical hazard (yellow or orange box) on a scale from 0 to 4, with 0
being the safest and 4 being the most hazardous.
Health
Flammability
Physical
Hazard
PPE
Health Hazard
4 Deadly – very short exposure could cause death or serious injury
3 Extreme Danger – short exposure could cause serious injury
2 Hazardous – intense or continued exposure could cause injury
1 Slightly Hazardous – exposure could cause irritation
0 Not Hazardous
Health
Flammability
Physical
Hazard
PPE
Flammability
4 Extremely flammable; will rapidly or completely vaporize at normal
pressure and temperature
3 Ignites at normal temperatures
2 Ignites when heated
1 Ignites when moderately heated
0 Materials that will not burn
Health
Flammability