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Hydrofluoric acid is a highly corrosive and toxic inorganic compound, consisting of hydrogen and fluorine. It is typically produced by reacting calcium fluoride with sulfuric acid. This acid is known for its ability to dissolve glass and is often used in various industrial applications due to its unique properties. Hydrofluoric acid is primarily utilized in the production of fluorine-containing compounds, metal etching, and glass etching processes.
| Chemical formula | HF |
| Concentration | Typically 48-70% by weight |
| Appearance | Colorless liquid |
| Boiling point | Approximately 19.5 °C (67.1 °F) |
| Density | 1.15 g/cm³ |
When purchasing hydrofluoric acid, buyers should consider the concentration required for their specific application, as it typically ranges from 48% to 70%. It is important to specify the desired purity and any necessary certifications for safety and handling. Additionally, buyers should indicate the quantity needed, as larger volumes may require special handling and transportation considerations due to the acid's hazardous nature.
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Use appropriate personal protective equipment (PPE), including gloves, goggles, and face shields, and work in a well-ventilated area.
Yes, it should be stored in a cool, dry place in compatible containers, typically made of polyethylene or Teflon.
It can be harmful to the environment if released, as it can contaminate water sources and harm aquatic life.
Yes, it is commonly used for etching silicon wafers and cleaning equipment in semiconductor manufacturing.
Immediately rinse the affected area with water and seek medical attention, as it can cause severe burns.
Alternatives depend on the application, but some may include other acids or chemical etchants with less hazardous properties.