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HF

Hydrofluoric Acid

Hydrofluoric acid (HF) is a colorless liquid or gas known for its extreme corrosiveness. Composed of fluorine and hydrogen, it is soluble in water, releasing a significant amount of heat upon dissolution to form hydrofluoric acid aqueous solutions. Hydrofluoric acid is unique in its ability to corrode glass and metals and can react with many organic and inorganic substances.

Industrially, hydrofluoric acid is extensively used in petroleum refining, pharmaceutical production, the synthesis of high-purity inorganic substances and organic fluorocompounds, and glass etching. Its reactivity with silicon makes it indispensable in semiconductor manufacturing and glass cleaning processes.

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Hydrofluoric Acid
Hydrofluoric Acid
Process

Hydrofluoric acid can be formed by the direct reaction of hydrogen and fluorine gases under specific conditions, or by reacting calcium fluoride (CaF2) with concentrated sulfuric acid (H2SO4) upon heating. In the latter method, the reaction produces hydrofluoric acid gas and calcium sulfate precipitate, and the hydrofluoric acid gas can then be dissolved in water to form an aqueous solution of hydrofluoric acid.

GasHydrofluoric acid (HF)
CAS7664-39-3
Purity≥99.99%


Applications
  • Semiconductor
    Semiconductor

    Used for cleaning silicon wafers and etching silicon to form microcircuit patterns in semiconductor manufacturing industry

  • Glass etching
    Glass etching

    Employed to etch glass, creating decorative items and glass components for precision instruments.

  • Chemical synthesis
    Chemical synthesis

    Acts as a reagent in the preparation of organic and inorganic fluorocompounds.

  • Petroleum refining
    Petroleum refining

    Utilized to remove non-fluorinated impurities during the refining process.

  • Metal surface treatment
    Metal surface treatment

    Used to remove oxide layers and other impurities from metal surfaces.

Frequently Asked Question
  • What is the purity level of your hydrofluoric acid?

    We offer a variety of purities of hydrofluoric acid to choose from: industrial grade hydrofluoric acid 40-70%, electronic grade purity 40-55%. Industrial anhydrous hydrogen fluoride 99.99%, high-purity hydrogen fluoride 99.999%.

  • Can your hydrofluoric acid be used in semiconductor manufacturing?

    Absolutely, our high-purity hydrofluoric acid is ideal for semiconductor manufacturing processes, including silicon wafer cleaning and etching, thanks to its minimal impurities.

  • Is your hydrofluoric acid suitable for glass etching applications?

    Yes, the high purity of our hydrofluoric acid makes it perfect for precise and detailed glass etching applications, producing clear and consistent results.

  • What sizes and packaging options are available for your hydrofluoric acid?

    We offer a variety of packaging options, including tanker trucks, steel cylinders, and ton drums, to meet different needs, from small-scale laboratory requirements to large industrial applications. For more details, please contact our sales team.

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