Hydrofluoric Acid
An aqueous solution of hydrogen fluoride (HF). A colourless, fuming and highly corrosive liquid that attacks glass and siliceous materials. ANFA supplies the full 30–70% concentration range across industrial and electronic (UP / EL) grades, tailored to your process.
Hydrofluoric acid is the backbone of the fluorine chemical industry and ANFA's core product. Backed by a secure fluorspar supply chain and in-house blending capability, we deliver a full gradient from bulk industrial to semiconductor ultra-pure grades. Industrial grades comply with the GB/T 7744 specification system; electronic grades are controlled to ppb levels for metal ions and particles, serving wafer cleaning, photovoltaic texturing and optical fibre etching.
International trade names: Ácido fluorhídrico (Spanish), Ácido fluorídrico (Portuguese), Плавиковая кислота (Russian). Overseas buyers frequently search for this product under these local-language names.
Industrial Grade — Typical Specification
| Item | Premium | Grade A | Grade B |
|---|---|---|---|
| HF content | ≥ 40 / 55 / 60% | ≥ 40 / 55 / 60% | ≥ 40 / 55 / 60% |
| Fluosilicic acid | ≤ 0.05% | ≤ 0.30% | ≤ 0.60% |
| Sulphuric acid | ≤ 0.05% | ≤ 0.10% | ≤ 0.50% |
| Non-volatile acid | ≤ 0.05% | ≤ 0.10% | ≤ 0.50% |
| Residue on ignition | ≤ 0.10% | ≤ 0.15% | ≤ 0.30% |
| Iron (Fe) | ≤ 0.005% | ≤ 0.01% | ≤ 0.05% |
Electronic Grade — Typical Specification (49%)
| Item | EL Grade | UP Grade | UP-S Grade |
|---|---|---|---|
| HF content | 49.0 ± 0.5% | 49.0 ± 0.5% | 49.0 ± 0.3% |
| Sodium (Na) | ≤ 100 ppb | ≤ 10 ppb | ≤ 1 ppb |
| Iron (Fe) | ≤ 100 ppb | ≤ 10 ppb | ≤ 1 ppb |
| Calcium (Ca) | ≤ 100 ppb | ≤ 10 ppb | ≤ 1 ppb |
| Aluminium (Al) | ≤ 100 ppb | ≤ 10 ppb | ≤ 1 ppb |
| Copper / Nickel | ≤ 50 ppb | ≤ 5 ppb | ≤ 1 ppb |
| Particles (≥0.5 µm) | ≤ 100 pcs/mL | ≤ 25 pcs/mL | ≤ 10 pcs/mL |
Typical values, configurable on request
Safety & handling
Class 8 corrosive, highly toxic by inhalation and skin contact. HF-specific PPE and calcium gluconate gel required.
More in our portfolio
Ammonium Bifluoride
White needle-like crystals, deliquescent and prone to caking; soluble in water, slightly soluble in alcohol. The aqueous solution is acidic and attacks glass. Decomposes into ammonia and hydrogen fluoride on heating.
Learn moreCalcium Fluoride (Fluorspar)
The originating raw material of the fluorine chemical industry. ANFA supplies acid-grade fluorspar concentrate (CaF₂ 85–97%) and metallurgical grade fluorspar for HF production, metallurgical fluxing and construction materials.
Learn moreSodium Fluoride
A white crystalline powder or colourless crystals, sparingly soluble in water with a slightly alkaline reaction. Widely used as a fluorinating agent, fluxing agent, preservative and water fluoridation agent.
Learn moreNeed a fluorine solution built around your process?
Tell us your substrate, line configuration and cycle time — our technical team will respond with a formulation proposal and samples.