Hydrofluoric acid is also broadly used as ... Fluorspar is treated with sulfuric acid, creating hydrogen fluoride and calcium sulfate, which in hydrated form is known as gypsum.

Starting with hot sulphuric acid is probably not everyone ... moves into the downright scary as he reaches for the hydrofluoric acid and has to use a PTFE container because HF is notorious ...

Hydrofluoric acid (HF) and Hydrogen Fluoride (HF) are very poisonous, highly irritating and corrosive. Hydrofluoric acid or Hydrogen Fluoride (HF) is fatal if inhaled, if swallowed, or in contact with ...