NFPA Diamonds

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Description and Tags

Chemistry

Last updated 12:49 AM on 9/3/26
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26 Terms

1
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Health 4

Deadly

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Health 3

Extreme Danger

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Health 2

Hazardous

4
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Health 1

Slightly Hazardous

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Health 0

Normal Material

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Fire 4

Flash point below 73°F

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Fire 3

Flash point below 100°F

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Fire 2

Flash point below 200°F

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Fire 1

Flash point above 200°F

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Fire 0

Will Not Burn

11
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Reactivity 4

May DetonateR

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Reactivity 3

Shock and Heat May Detonate

13
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Reactivity 2

Violent Chemical Change

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Reactivity 1

Unstable If Heated

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Reactivity 0

Stable

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Where do specific hazard symbols show up on the NFPA Diamond?

In the white quadrant

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What does blue mean in the NFPA Diamond?

Health

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What does red mean in the NFPA Diamond

Fire

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What does yellow mean in the NFPA Diamond

Reactivity

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What does white mean in the NFPA Diamond

Specific hazard symbols

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OX

Oxidizer

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ACID

Acid

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ALK

Alkali (Base)

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COR

Corrosive

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☢

Radioactive

26
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“W” with a slash across it

Do Not Use Water (reacts when used with water)