Ammonium bifluoride

Ammonium bifluoride (CAS 1341-49-7), also known as ABF, is an inorganic fluoride salt.

Where is Ammonium bifluoride used?

• Metal processing and mining: flux and etchant removing oxide layers from aluminum, stainless steel and other alloys before finishing or refining
• Electronics: glass and silicon etching for precise surface modification in component fabrication
• Textile and paper: pH buffer and flame retardant additive for fire-resistance treatments
• Building and construction: masonry cleaning and concrete surface treatment, dissolving silicates and mineral deposits
• It delivers controlled fluoride activity in acidic conditions as a practical alternative to hydrofluoric acid.

Good to know: A practical alternative to hydrofluoric acid where handling pure HF is operationally difficult.

Commercial specifications

• Technical grade, purity typically 95–98%+
• Bulk packaging in fiber drums or HDPE containers
• Smaller quantities for laboratory or specialty use