I'm looking to replace hydrofluoric acid, which is highly dangerous to handle, in a factory making aluminium products.
alternatives
http://www.turi.org/TURI_Publications/TURI_Chemical_Fact_Sheets/Hydrofluoric_Acid_Fact_Sheet/Hydrofluoric_Acid_Facts/Alternatives
The fluoride ion can be introduced either by using hydrofluoric acid or by adding the ion in the form of a salt (e.g., ammonium and sodium fluoride salts).
As suggested in the link provided by Dr. Mushtaq,
Kind regards
Mohamed
Often, hydrofluoric acid ― when used as etchant ― can be substituted by Buffered Hydrofluoric Acid (BHF) or Buffered Oxide Etch (BOE) (*), which often contains NH4F and HF aq.; by NH4HF2 (or KHF2) + HCl conc. aq.; or by hexafluorosilicic acid (fluosilic acid).
(*) https://en.wikipedia.org/wiki/Buffered_oxide_etch
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