Ammonium Hydrogen Difluoride (NH₄HF₂)

Product Overview

Ammonium Hydrogen Difluoride (NH₄HF₂) is a high-purity inorganic chemical widely used in metal surface treatment, chemical etching, glass etching, and electronics manufacturing. Known for its fluoride ion content and strong reactivity, it acts as an effective etching agent and industrial reagent.

Typically supplied as white crystalline powder or granules, Ammonium Hydrogen Difluoride is highly soluble in water, releasing fluoride ions that facilitate various etching, cleaning, and chemical synthesis applications.

Key Product Identification

• Product Name: Ammonium Hydrogen Difluoride

• Chemical Formula: NH₄HF₂

• CAS Number: 1341-49-7

• Molecular Weight: 51.01 g/mol

• HS Code: 28141000

• Appearance: White crystalline powder or granules

• Odor: Odorless

• Solubility: Highly soluble in water

Chemical & Physical Properties

Manufacturing & Quality Control

Ammonium Hydrogen Difluoride is produced by reacting ammonium fluoride with hydrofluoric acid under controlled conditions. Quality control ensures high purity, controlled particle size, and minimal impurities.

Quality assurance includes:

• Assay and fluoride content analysis

• Moisture and solubility testing

• Heavy metals and impurity monitoring

• Batch traceability with COA

Available grades:

• Industrial Grade

• Electronics/Etching Grade

• Laboratory Grade

Applications of Ammonium Hydrogen Difluoride

Metal Surface Treatment

• Pickling and etching of stainless steel, aluminum, and other metals

• Preparation of surfaces for electroplating and coating

Glass & Ceramics Etching

• Etching and frosting of glass surfaces

• Precision surface modification for decorative or technical purposes

Electronics & Semiconductor Industry

• Used in semiconductor fabrication and PCB manufacturing

• Acts as a fluoride source in specialized chemical processes

Chemical Synthesis

• Intermediate in fluorine-based chemicals

• Reagent in industrial and laboratory chemical reactions

Packaging & Storage

• Packaging Options:

• 25 kg kraft bag with PE liner

• 500–1,000 kg jumbo bag

• Custom packaging available

• Storage Conditions:

• Store in a cool, dry, ventilated area

• Keep containers tightly closed

• Avoid contact with moisture, acids, and oxidizing agents

• Shelf Life: 24 months under proper storage conditions

Safety & Handling

• Corrosive and toxic; handle with extreme care

• Avoid skin and eye contact; use gloves, goggles, and protective clothing

• Avoid inhalation of dust or fumes

• Use in well-ventilated areas with proper local exhaust

• Refer to SDS / MSDS for detailed safety instructions

Regulatory & Compliance

Available documentation:

• COA (Certificate of Analysis)

• SDS / MSDS

• REACH compliance

• Industry-specific safety and transport documentation

Why Choose Our Ammonium Hydrogen Difluoride?

• ✔ High purity and consistent fluoride content

• ✔ Suitable for metal etching, glass etching, and electronics applications

• ✔ Reliable supply and competitive pricing

• ✔ Strict quality control and batch traceability

• ✔ Professional technical support

Frequently Asked Questions (FAQ)

Q1: What is Ammonium Hydrogen Difluoride used for?

It is primarily used for metal surface treatment, glass etching, electronics, and chemical synthesis.

Q2: Is it soluble in water?

Yes, it dissolves readily in water, releasing fluoride ions.

Q3: How should it be stored?

Store in a cool, dry, ventilated area, away from acids, oxidizers, and moisture.

Q4: Is it safe to handle?

It is corrosive and toxic; proper PPE and ventilation are required.