Fluoroboric Acid
A colourless, transparent liquid and strong acid, miscible with water and alcohols. A core component of fluoroborate plating baths and metal surface treatment systems.
Fluoroboric acid is widely used in electroplating (tin, lead, copper and nickel fluoroborate systems), chemical polishing of aluminium and its alloys, and blended metal treatment solutions. ANFA supplies standard 40% / 48% / 50% concentrations with tight control of free boric acid, chloride and iron to safeguard bath stability and deposit quality.
International trade names: Ácido fluorobórico (Spanish), Ácido fluorobórico (Portuguese), Тетрафторборная кислота (Russian). Overseas buyers frequently search for this product under these local-language names.
Fluoroboric Acid — Typical Specification
| Item | 40% | 48% | 50% |
|---|---|---|---|
| HBF₄ content | ≥ 40.0% | ≥ 48.0% | ≥ 50.0% |
| Free boric acid | ≤ 2.5% | ≤ 2.5% | ≤ 2.5% |
| Chloride (Cl) | ≤ 0.05% | ≤ 0.05% | ≤ 0.05% |
| Sulphate (as SO₄) | ≤ 0.05% | ≤ 0.05% | ≤ 0.05% |
| Iron (Fe) | ≤ 0.01% | ≤ 0.01% | ≤ 0.01% |
| Silicon (Si) | ≤ 0.02% | ≤ 0.02% | ≤ 0.02% |
Typical values, configurable on request
Safety & handling
Class 8 corrosive. Keep away from metal powders and alkaline substances; wear acid-resistant PPE.
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Learn moreNeed a fluorine solution built around your process?
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