1. Durable construction: These cans are often made of heavy-duty steel or polyethylene to withstand the harsh conditions associated with storing and transporting hazardous materials.

2. Self-closing lids: The lids on hazardous material safety cans are designed to close automatically, reducing the risk of spills and minimizing the escape of vapors.

3. Pressure-relief mechanisms: Some hazardous materials can generate pressure as they sit in a can, which could cause the can to burst. Hazardous material safety cans feature pressure-relief mechanisms to prevent this from happening.

4. Flame arresters: These devices are installed in the spout of the can to prevent flames from entering the can and igniting the contents.

5. Labels and color-coding: Hazardous material safety cans are typically labeled with warning labels and color-coded to indicate the type of hazardous material they contain.

Overall, hazardous material safety cans are an important safety tool for anyone working with hazardous materials, helping to prevent accidents and protect workers and the environment.