Even after police say all is clear, Utah State University students are frustrated and confused after once again being evacuated from a campus dormitory this week.

Sodium hydroxide isn’t super safe ... Chemically, this is the sodium salt of sulphuric acid, and you can dispose of it safely after neutralizing it with baking soda. Rit dye can provide coloring.

Strong acids such as hydrochloric acid, sulfuric acid and nitric acid are ... For example, drain cleaners and oven cleaners usually contain sodium hydroxide. Ammonia is also commonly used in ...

Chemical attacks can involve both acidic substances such as sulphuric acid or alkaline ones such as sodium hydroxide, commonly known as caustic soda. Both can cause life-changing injuries.