Description

Ammonium Hexafluorosilicate is an inorganic salt primarily used as a source of fluoride and silica. This compound is valued for its role in industrial processes requiring controlled fluorination and surface treatment. It serves as a key raw material for manufacturers in the ceramics, metallurgy, and water treatment industries seeking reliable and consistent chemical performance.

Application

• Metal Surface Treatment: Used in aluminum brightening, magnesium casting, and as a component in metal pretreatment solutions.
• Glass & Ceramics Manufacturing: Acts as a matting agent for opal glass and a flux in ceramic glazes and enamels.
• Water Fluoridation & Treatment: Employed as a source of fluoride for municipal water systems and in industrial water treatment processes.
• Wood Preservation: Functions as an insecticide and fungicide in timber treatment formulations.
• Laundry & Cleaning Products: Used as a hardening agent for laundry sours and in some industrial cleaning compounds.
• Electroplating & Electrolysis: Serves as an electrolyte component in specific metal plating and refining operations.
• Chemical Synthesis: Acts as a fluorinating agent or silica source in the production of other silicon and fluorine compounds.
• Concrete & Stone Hardener: Applied for hardening and dust-proofing concrete floors and natural stone surfaces.

Basic Information

Product Name	Ammonium Hexafluorosilicate
CAS No.	16919-19-0
Molecular Formula	(NH4)2SiF6
Molecular Weight	178.15 g/mol
Synonyms	Ammonium Fluosilicate; Ammonium Silicofluoride; Diammonium Hexafluorosilicate; Hexafluorosilicate(2-) Diammonium; Ammonium Hexafluoridosilicate(2-); (OC-6-11)-Diammonium HexafluoroSilicate; Ammonium Fluorosilicate
EINECS	240-968-3

Quality Control

Our Ammonium Hexafluorosilicate is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, assay, and impurity levels is provided with every shipment to guarantee traceability and compliance with your requirements.

Storage

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

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (as (NH4)2SiF6)	≥ 98.0 %
Water Insoluble Matter	≤ 0.5 %
Chloride (as Cl)	≤ 0.01 %
Sulfate (as SO4)	≤ 0.05 %
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 20 ppm
Loss on Drying	≤ 0.5 %

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