Description

Ammonium Fluoride Etching Mixture Solution is a specialized inorganic formulation designed for precision surface treatment and etching processes. This solution is valued for its controlled reactivity, which allows for consistent and uniform material removal in high-tech manufacturing. It is an essential chemical for industries requiring meticulous surface preparation and patterning of sensitive substrates, particularly in electronics and glass processing.

Application

• Semiconductor Manufacturing: For etching silicon dioxide (SiO₂) layers and cleaning silicon wafers during device fabrication.
• Glass & Ceramics Processing: Used in frosting, matting, and surface texturing of glass and technical ceramics.
• Metal Surface Treatment: Employed for cleaning and preparing metal surfaces, such as aluminum and its alloys, prior to coating or bonding.
• Analytical Chemistry: Acts as a reagent for specific fluoride-based analyses and digestions in laboratory settings.
• Optics Manufacturing: For precision etching and cleaning of optical components and lenses.
• Micro-Electro-Mechanical Systems (MEMS): Used in the intricate etching steps required for MEMS device production.

Basic Information

Product Name	Ammonium Fluoride Etching Mixture Solution
CAS No.	70456-74-5
Molecular Formula	NH₄F•HF (commonly represented)
Molecular Weight	57.04 g/mol (for NH₄F)
Synonyms	Ammonium Bifluoride Solution; Ammonium Hydrogen Fluoride Solution; Etching Solution AF; Silicon Etch Solution; Buffered Oxide Etch (BOE) component; Ammonium Fluoride Hydrofluoride Mixture; Ammonium Acid Fluoride Solution
EINECS	Contact for details

Quality Control

Our Ammonium Fluoride Etching Mixture Solution is manufactured under strict quality control protocols to ensure batch-to-batch consistency and performance reliability. Each lot is tested against stringent internal specifications for critical parameters such as assay, fluoride content, and metallic impurities. A Certificate of Analysis (COA) documenting these results is provided with every shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are kept tightly sealed to prevent absorption of atmospheric moisture and degradation.

Specification

Item	Specification
Appearance	Clear, colorless to slightly yellow liquid
Assay (as NH₄F•HF)	40.0 - 50.0 % w/w
Fluoride (F) Content	Contact for details
Density (at 20°C)	~1.12 g/cm³
Trace Metals (ICP-MS)	< 1 ppm each

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