What does the term 2pe mean on a hazchem label?

The term "2PE" on a Hazchem label indicates that the substance is a Class 2 gas, specifically a flammable gas, and that it requires protective clothing and equipment for handling. The "PE" signifies that the substance poses a risk of explosion when in contact with air or other oxidizers. This label is crucial for ensuring safety during the transport and storage of hazardous materials.