| HEALTH
(Blue) |
|
4
|
Materials that on very
short exposure could cause death or major residual injury even though prompt
medical treatment was given. |
|
3
|
Materials that on short
exposure could cause serious temporary or residual injury even though prompt
medical treatment was given. |
|
2
|
Materials that on intense
or continued exposure could cause temporary incapacitation or possible residual
injury unless prompt medical treatment was given. |
|
1
|
Materials that on exposure
would cause irritation but only minor residual injury even if no treatment
was given. |
|
0
|
Materials that on exposure
under fire conditions would offer no hazard beyond that of ordinary combustible
material. |
| FLAMMABILITY
(Red) |
|
4
|
Materials that: (a)
rapidly or completely vaporize at atmospheric pressure and normal ambient
temperatures and burn readily, or (b) are readily dispersed in air and burn
readily. |
|
3
|
Liquids and solids
that can be ignited under almost all ambient temperature conditions. |
|
2
|
Materials that must
be moderately heated or exposed to relatively high ambient temperatures
before ignition can occur. |
|
1
|
Materials that must
be preheated before ignition can occur. |
|
0
|
Materials that will
not burn. |
| REACTIVITY
(Yellow) |
|
4
|
Materials that in themselves
are readily capable of detonation or of explosive decomposition or reaction
at normal temperatures and pressures. |
|
3
|
Materials that: (a)
in themselves are capable of detonation or explosive reaction but require
a strong initiating source, or (b) must be heated under confinement before
initiation, or (c) react explosively with water. |
|
2
|
Materials that: (a)
in themselves are normally unstable and readily undergo violent chemical
change but do not detonate, or (b) may react violently with water, or (c)
may form potentially explosive mixtures with water. |
|
1
|
Materials that in themselves
are normally stable but which can: (a) become unstable at elevated temperatures,
or (b) react with water with some release of energy, but not violently. |
|
0
|
Materials that in themselves
are normally stable, even when exposed to fire, and that do not react with
water. |
SPECIAL
Notice Key (White)
This field designates special information about the material. |
|
W
|
Denotes materials that
are water reactive. These compounds undergo rapid energy releases on contact
with water. |
|
OX
|
Denotes materials that
are oxidizing agents. These chemicals give up oxygen easily, remove hydrogen
from other compounds, or attract negative electrons. |