Hydrofluoric acid or Hydrogen Fluoride (HF) is fatal if inhaled, if swallowed, or in contact with skin. It causes severe skin burns and eye damage. The effects may be delayed after exposure. Do not ...

Only one substance will do the job: hydrofluoric acid ... and perfluorooctanoic acid (PFOA) is classified as a persistent organic pollutant or “forever chemical” with toxic properties.

Although chemists consider hydrofluoric acid (HF) to be a “weak” acid, its potential to produce serious health effects greatly exceeds that of “strong” acids commonly used in the laboratory. HF shares ...