Wear proper personal protective equipment in lab:
Safety glasses
Nitrile gloves
Lab coat
Long pants
Closed toed & heeled shoes
Be mindful when heating solutions:
Monitor the temperature of the sandbath.
Use a boiling stick.
Hot glass looks like cold glass!
Sodium hydroxide and hydrochloric acid are corrosive. Avoid contact with skin and eyes.
Diazonium salts are explosive in the solid state.
Keep in solution and keep containers on ice to avoid drying.
Use immediately after preparation.