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20 Cards in this Set
- Front
- Back
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Blue |
Health rating |
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Red |
Flammability rating |
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Yellow |
Instability rating |
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White |
Specific hazard |
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Health Rating 0 |
Minimal hazard |
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Health rating 1 |
Slight hazard |
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Health rating 2 |
Moderate hazard |
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Health rating 3 |
Serious hazard |
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Health rating 4 |
Severe hazard |
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Flammability rating 0 |
Will not burn |
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Flammability rating 1 |
Must be preheated to burn |
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Flammability rating 2 |
Ignites when moderately heated |
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Flammability rating 3 |
Ignites at ambient temperatures |
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Flammability rating 4 |
Flammable gases; volatile liquids; pyrophoric materials |
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Instability rating 0 |
Normally stable |
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Instability rating 1 |
Normally stable but becomes unstable if heated |
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Instability rating 2 |
Violent chemical change possible at elevated temperature and pressure |
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Instability rating 3 |
Capable of detonation or explosive decomposition with strong initiating source |
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Instability rating 4 |
Capable of detonation or explosive decomposition at ambient conditions |
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W with a slash |
Materials that react violently or explosively with water |
