It is hot and corrosive. Use the tongs for placing the coin in the solution and for removing it. Thermal burn hazard exists. Remember, heated glass and metal look the same as when cold. Check for warmth before handling.
Fire hazard exists when using the Bunsen burner.
Be sure all flammable materials have been removed from the area before lighting. Long hair and loose clothing should be tied back. Check the gas hose for cracks and leaks before using. Be sure to extinguish the flame when you have finished using the burner and to turn off the gas supply. Because, when it is dry, it becomes pyrophoric, it should be digested in dilute sulphuric acid, neutralised, and then it may be safely disposed of in the sink.