Ammonium Hydrogen Difluoride (NH₄HF₂) is a highly reactive and versatile inorganic compound that is widely used across various chemical and industrial sectors. It appears as a white crystalline solid and is most commonly employed as an etching agent and fluoride source. The compound is typically produced by reacting ammonium fluoride (NH₄F) with hydrogen fluoride (HF), resulting in a highly reactive salt that can release fluoride ions in various chemical processes.
Available in Nanyang Chemical:
- Ammonium Hydrogen DiFluoride, Analysis Reagent (AR) 500gr
Usage of Ammonium Hydrogen Difluoride
- Etching agent in the semiconductor industry.
- Reagent in the preparation of metal fluorides.
- Used in the production of specialized glass.
- Analytical chemistry for fluoride ion sources.
- Surface modification and cleaning applications.
How to Use Ammonium Hydrogen Difluoride
- Handling: Wear appropriate personal protective equipment (PPE) such as gloves and goggles. Handle in a well-ventilated area or under a fume hood to avoid exposure to vapors.
- Storage: Store in a tightly sealed container in a cool, dry place away from moisture and incompatible substances.
- Application: For etching or surface modification, mix with other chemicals as per the process requirements and apply directly to the surface or substrate. Follow safety protocols when handling to avoid skin or eye contact and inhalation of vapors.
Common Application
- Semiconductor Industry: Ammonium Hydrogen Difluoride is used in the etching of semiconductor wafers and the production of thin films. Its fluoride ions help modify the surface characteristics of materials.
- Glass Production: It is used in specialized glass production, particularly in creating glass with specific properties, such as resistance to high temperatures or chemical reactivity.
- Metal Fluoride Preparation: Ammonium Hydrogen Difluoride is employed in laboratories to prepare metal fluorides by reacting with metal oxides or metals.
- Fluoride Source: It serves as a key source of fluoride ions in various industrial and analytical applications, including the production of aluminum fluoride and other important fluorine compounds.
Due to its highly reactive nature, Ammonium Hydrogen Difluoride must be handled with great care. It is sensitive to moisture and must be stored in dry conditions, away from incompatible materials. Personal protective equipment (PPE) is essential when working with this compound, and proper ventilation should always be used to prevent inhalation of harmful vapors.
