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VWR Ammonium hydrogen difluoride ≥97%, TECHNICAL
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Specifications:
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Powder |
| Product Brand | VWR | ||
| Product Grade | Analytical grade | Formula | NH₄HF₂ |
Ammonium hydrogen difluoride (NH₄HF₂) is a corrosive, highly reactive fluoride salt used in industrial cleaning, glass etching, metal surface treatments, and chemical synthesis. This technical grade product, with a minimum purity of 97%, is suitable for large-scale or non-analytical applications requiring fluoride ion reactivity in acidic environments.
Key Features
- High Purity (≥97%): Suitable for industrial and general laboratory applications
- Active Fluoride Source: Releases hydrogen fluoride in solution for aggressive etching and cleaning
- Technical Grade: Cost-effective reagent for non-pharmaceutical, non-critical applications
- Versatile Formulation: Soluble in water and compatible with acid mixtures
- Available in Bulk: Supplied in both 1 kg and 5 kg pack sizes for routine and high-volume use
Chemical and Physical Properties
| Property | Specification |
|---|---|
| Chemical Name | Ammonium hydrogen difluoride |
| CAS Number | 1341-49-7 |
| Molecular Formula | NH₄HF₂ |
| Molecular Weight | 57.04 g/mol |
| Melting Point | 127 °C |
| Density | 0.8 g/cm³ (at 20 °C) |
| Storage Temperature | Ambient |
| EINECS Number | 215-676-4 |
| MDL Number | MFCD00012018 |
| Merck Index | 13,00498 |
| UN Number | UN1727 |
| ADR Classification | Class 8 (Corrosive), Packing Group II |
Safety and Handling
| Hazard Classification | Details |
|---|---|
| GHS Pictograms | Corrosive |
| Toxic | |
| Hazard Statements | H301: Toxic if swallowed |
| H314: Causes severe skin burns and eye damage | |
| Handling Precautions | Use appropriate PPE, chemical fume hood, and corrosion-resistant containers |
Applications
- Glass Etching and Frosting: Reacts with silica for decorative or functional surface modifications
- Metal Surface Treatment: Used for passivation and cleaning of stainless steel and other alloys
- Chemical Synthesis: Intermediate for fluorination processes and inorganic fluorides
- Industrial Cleaning Agents: Employed in acid-based descaling and oxide removal solutions
- Etching Pastes and Buffers: Incorporated into gel formulations for controlled surface corrosion
VWR Ammonium Hydrogen Difluoride ≥97%, TECHNICAL offers an effective and economical source of fluoride ions for industrial processing and non-critical laboratory workflows. Its strong reactivity with silicates and metals makes it essential for applications such as glass etching, steel treatment, and fluoride synthesis.
- Pack Size: 1kg 5kg