Phosphorus is an example of which hazard category?

Phosphorus is an example of which hazard category?

• A. Phosphorus
• B. Chlorine
• C. Acetone
• D. Diesel

Answer: (A)

Spontaneously combustible solids are materials that can ignite in air at room temperature without an external ignition source. Phosphorus, especially white phosphorus, is the classic example because it readily reacts with oxygen in the atmosphere and can ignite on contact with air. This sets it apart from the others listed: chlorine is a toxic gas, while acetone and diesel are flammable liquids that require a flame or heat source to ignite. So phosphorus fits the category of spontaneously combustible solids.

Spontaneously combustible solids are materials that can ignite in air at room temperature without an external ignition source. Phosphorus, especially white phosphorus, is the classic example because it readily reacts with oxygen in the atmosphere and can ignite on contact with air. This sets it apart from the others listed: chlorine is a toxic gas, while acetone and diesel are flammable liquids that require a flame or heat source to ignite. So phosphorus fits the category of spontaneously combustible solids.