Which class is associated with corrosive substances?

• A. Class 8
• B. Class 6
• C. Class 7
• D. Class 9

Answer: (A)

Corrosive substances are identified by their ability to wear away or destroy materials and tissue on contact. In hazardous materials classification, that property is grouped under Class 8. This category covers acids and bases that can cause severe chemical burns and corrode metals, so they’re governed by specific handling, labeling, and packaging rules to protect people and environments. For example, sulfuric acid and sodium hydroxide fall into this class.

Other classes cover different hazards: radioactive materials are Class 7, toxic or infectious substances are Class 6, flammable liquids are Class 3, and miscellaneous dangerous goods (including some environmentally hazardous materials) are Class 9. Because corrosives are defined by their corrosive effect, they belong to Class 8.