Description

Ammonium Hydrogen Difluoride is an important inorganic fluoride salt with the chemical formula NH4HF2. This compound is valued for its unique ability to provide both fluoride and ammonium ions in a stable, solid form, making it a versatile reagent and processing agent. It is essential for manufacturers in the glass etching, metal surface treatment, and electronics industries seeking a controlled source of hydrofluoric acid activity.

Application

• Glass Etching and Frosting: A key component in formulations for etching, frosting, and polishing glass, ceramics, and silicon wafers.
• Metal Surface Treatment: Used in aluminum anodizing baths, stainless steel pickling solutions, and for cleaning and deoxidizing metal surfaces prior to plating or coating.
• Chemical Synthesis: Serves as a fluorinating agent and a precursor for other inorganic fluorides in specialty chemical manufacturing.
• Oil & Gas Industry: Employed in acidizing formulations for well stimulation to dissolve silicate minerals and improve permeability.
• Wood Preservation: Acts as a component in formulations for protecting lumber against fungal decay and insect infestation.
• Industrial Cleaning: Used in specialized acid cleaners for removing mineral scale and oxide layers from industrial equipment.
• Laboratory Reagent: Utilized in analytical chemistry and research as a source of fluoride ions.

Basic Information

Product Name	Ammonium Hydrogen Difluoride
CAS No.	1341-49-7
Molecular Formula	NH4HF2 / F2H5N
Molecular Weight	57.04 g/mol
Synonyms	Ammonium Bifluoride; Acid Ammonium Fluoride; Ammonium Difluorohydrate; Ammonium Fluoride Hydrofluoride; Monoammonium Difluoride; NH4HF2; ABF
EINECS	215-676-4

Quality Control

Our Ammonium Hydrogen Difluoride is manufactured under strict process controls to ensure batch-to-batch consistency and high purity. Quality is verified through a comprehensive suite of analytical tests including assay, impurity profiling, and physical characterization. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with your specifications and industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat and incompatible materials. Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed to prevent caking and degradation. Store separately from strong acids and bases.

Specification

Item	Specification
Appearance	White crystalline solid or powder
Identification (IR)	Conforms
Assay (as NH4HF2)	≥ 98.0 %
Water Insolubles	≤ 0.1 %
Sulfate (SO4)	≤ 0.05 %
Chloride (Cl)	≤ 0.005 %
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.