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Labeling & Marking System
Page Updated January 2008
Manufacturer's Responsibility
- Name and Address
- Identity of Hazardous Components
- Appropriate Hazard Warnings
User's Responsibility
- Identity of Hazardous Components
- Appropriate Hazard Warnings
- CAS# -- Chemical Abstract Service Number
- Assure that Manufacturer's label is not defaced or removed
OSU's HMLS* LABELING SYSTEM
*(Hazardous Materials Labeling System)
- CODE ORIENTED
- EASY TO LEARN
- COMPLEMENTS MANUFACTURER'S LABELING
Here is the list of OSU's PPE symbols
 NOTE: |
A * next to the Health number means that the
substance has chronic health effects. |
| HEALTH |
4 |
Deadly: even the slightest
exposure to this substance would be life threatening. Only specialized protective
clothing, for these materials, should be worn. |
3 |
Extreme Danger: serious injury would result
from exposure to this substance. Do not expose any body surface to these materials. Full
protective measures should be taken. |
2 |
Dangerous: exposure to this
substance would be hazardous to health. Protective measures are indicated. |
1 |
Slight Hazard: irritation or minor injury
would result from exposure to this substance. Protective measures are indicated. |
0 |
No Hazard: exposure to this
substance offers no significant risk to health. |
| FLAMMABILITY |
4 |
Flash Point Below 73ºF and
Boiling Point Below 100ºF: this substance is very flammable, volatile or explosive
depending on its state. Extreme caution should be used in handling or storing of these
materials. |
3 |
Flash Point Below 100ºF: flammable, volatile
or explosive under almost all normal temperature conditions. Exercise great caution in
storage or handling of these materials. |
2 |
Flash Point Below 200ºF:
moderately heated conditions may ignite this substance. Caution procedures should be
employed in handling. |
1 |
Flash Point Above 200ºF: this substance must
be preheated to ignite. Most combustible solids would be in this category. |
0 |
Will Not Burn: substances
that will not burn. |
| REACTIVITY |
4 |
May Detonate: substances
that are readily capable of detonation or explosion at normal temperatures and pressures.
Evacuate area if exposed to heat or fire. |
3 |
Explosive: substances that are readily capable
of detonation or explosion by a strong initiating source, such as heat, shock or water.
Monitor from behind explosion-resistant barriers. |
2 |
Unstable: violent chemical
changes are possible at normal or elevated temperatures and pressures. Potentially violent
or explosive reaction may occur when mixed with water. Monitor from a safe distance. |
1 |
Normally stable: substances that may become
unstable at elevated temperatures and pressures or when mixed with water. Approach with
caution. |
0 |
Stable: substances which
will remain stable when exposed to heat, pressure or water. |
 SIGNS AND PLACARDS
All buildings on Oklahoma State University property will be
placarded in compliance with the law. Each building which contains over the TPQ (threshold
planning quantity) of a hazardous substance will bear the appropriately numbered,
diamond-shaped placard approved by the National Fire Protection Association (NFPA).
(See example of placard at right)
 Outline of Right-to-Know Program < BACK NEXT > Employee Training
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