Nfpa 30 Ppt Site

| Class | Flash Point | Example | Key Risk | | :--- | :--- | :--- | :--- | | | < 73°F (22.8°C) & BP < 100°F | Ethyl ether, Acetaldehyde | Extreme, forms explosive vapors at room temp | | Class IB | < 73°F & BP ≥ 100°F | Gasoline, Acetone, Ethanol | High fire risk | | Class IC | ≥ 73°F, < 100°F | Turpentine, Xylene | Moderate fire risk | | Class II | ≥ 100°F, < 140°F | Diesel fuel, Kerosene | Combustible; heated conditions dangerous | | Class IIIA | ≥ 140°F, < 200°F | Formaldehyde, Heavy fuel oils | Low risk at room temp | | Class IIIB | ≥ 200°F | Lubricating oils, Cooking oils | Very low risk (not regulated unless heated) |

| Class | Flash Point | Example | Key Risk | | :--- | :--- | :--- | :--- | | | < 73°F (22.8°C) & BP < 100°F | Ethyl ether, Acetaldehyde | Extreme, forms explosive vapors at room temp | | Class IB | < 73°F & BP ≥ 100°F | Gasoline, Acetone, Ethanol | High fire risk | | Class IC | ≥ 73°F, < 100°F | Turpentine, Xylene | Moderate fire risk | | Class II | ≥ 100°F, < 140°F | Diesel fuel, Kerosene | Combustible; heated conditions dangerous | | Class IIIA | ≥ 140°F, < 200°F | Formaldehyde, Heavy fuel oils | Low risk at room temp | | Class IIIB | ≥ 200°F | Lubricating oils, Cooking oils | Very low risk (not regulated unless heated) |

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