Description

Silicate(2-), Hexafluoro-, Diammonium, Mixture with Silica Gel is a specialized inorganic compound combining the reactivity of a fluorosilicate salt with the high surface area and adsorptive properties of silica gel. This unique formulation is engineered to serve as a highly effective source of fluoride ions and ammonia in controlled-release or solid-phase applications where moisture management is critical. It is primarily utilized in industrial synthesis, analytical chemistry, and specialized material manufacturing processes that require a stable, solid-phase fluorinating or etching agent.

Application

• Glass & Ceramic Etching: Used as a solid-phase etchant or matting agent for glass, ceramics, and silicon wafers in microelectronics fabrication.
• Catalysis & Synthesis: Acts as a fluoride source or catalyst support in organic synthesis and polymerization reactions.
• Analytical Reagent: Employed in specific analytical methods for the determination of silica or as a component in test kits.
• Metal Surface Treatment: Used in formulations for metal cleaning, surface preparation, and conversion coatings.
• Desiccant & Stabilizer: The silica gel matrix provides controlled moisture absorption, stabilizing the fluorosilicate in humid environments.
• Fluoride Ion Source: Provides a convenient solid source of fluoride ions for laboratory and small-scale industrial processes.

Basic Information

Product Name	Silicate(2-), Hexafluoro-, Diammonium, Mixture with Silica Gel
CAS No.	62449-69-8
Molecular Formula	(NH₄)₂SiF₆ • xSiO₂ • yH₂O
Molecular Weight	Contact for details (Mixture)
Synonyms	Ammonium Hexafluorosilicate Mixed with Silica Gel; Diammonium Hexafluorosilicate-Silica Gel Mixture; Silica Gel, Mixt. with Diammonium Hexafluorosilicate; Ammonium Fluosilicate-Silica Gel Composite; (NH4)2SiF6/SiO2 Mixture; Solid Fluorosilicate Reagent; Etching Agent Composite; Fluoride Source on Silica Support
EINECS	Contact for details

Quality Control

Our production of Diammonium Hexafluorosilicate Mixed with Silica Gel adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed for critical parameters including active fluoride content, silica gel carrier properties, moisture level, and particle size distribution. Certificates of Analysis (COA) documenting these specifications are provided and available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. This product is hygroscopic (moisture-sensitive) and contains fluoride/strong alkali components. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture and CO₂, which can affect product performance.

Specification

Item	Specification
Appearance	White to off-white granular solid or powder
Identification (IR)	Conforms to standard
Assay (as (NH₄)₂SiF₆)	Contact for details
Fluoride (F) Content	Contact for details
Silica Gel Content	Contact for details
Loss on Drying	≤ X%
Particle Size Distribution	Customizable

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