Which type of substances are designated as hazard Class 8 in the DOT system?

Which type of substances are designated as hazard Class 8 in the DOT system?

• A. Flammable liquids
• B. Toxic gases
• C. Radioactive materials
• D. Corrosives

Answer: (D)

Class 8 designates corrosives—substances that can cause severe damage to living tissue and can corrode metals through chemical reactions. This category includes strong acids and bases, such as sulfuric acid, hydrochloric acid, and sodium hydroxide. Because they can burn skin and eyes and damage metals, they require careful handling, appropriate containment, and protective equipment during transport and use. The other options involve different hazards: flammable liquids pose fire risk (they’re Class 3), toxic gases cause poisoning mainly through inhalation (often Class 2 or 6), and radioactive materials involve radiation hazards (Class 7). So the label for Class 8 is reserved for corrosives.

Class 8 designates corrosives—substances that can cause severe damage to living tissue and can corrode metals through chemical reactions. This category includes strong acids and bases, such as sulfuric acid, hydrochloric acid, and sodium hydroxide. Because they can burn skin and eyes and damage metals, they require careful handling, appropriate containment, and protective equipment during transport and use. The other options involve different hazards: flammable liquids pose fire risk (they’re Class 3), toxic gases cause poisoning mainly through inhalation (often Class 2 or 6), and radioactive materials involve radiation hazards (Class 7). So the label for Class 8 is reserved for corrosives.