Description

Zinc Silicofluoride is an inorganic salt of zinc and hexafluorosilicate, widely recognized for its role as a versatile source of fluoride and zinc ions. This compound is valued for its efficacy in surface treatment and as a hardening agent, offering a combination of durability and chemical resistance. It is a critical raw material for manufacturers in the concrete, ceramics, laundry, and metal surface treatment industries.

Application

• Concrete Hardener and Waterproofer: Used to densify and harden concrete surfaces, improving abrasion resistance and reducing dusting.
• Ceramics and Enamels: Acts as a flux and opacifier in the production of ceramic glazes and porcelain enamels.
• Laundry Sours and Water Treatment: Employed as a sour (acidic rinse) in commercial laundries to neutralize alkalinity and prevent yellowing; also used in water fluoridation and as a wood preservative.
• Metal Surface Treatment: Functions in formulations for metal cleaning, pickling, and as a component in some plating baths.
• Manufacturing of Other Fluorides: Serves as a precursor in the synthesis of other complex fluoride compounds.
• Insecticide and Rodenticide: Historically used in some pest control formulations.

Basic Information

Product Name	Zinc Silicofluoride
CAS No.	18433-42-6
Molecular Formula	ZnSiF6 • 6H2O (common hydrated form)
Molecular Weight	315.56 g/mol (for hexahydrate)
Synonyms	Zinc Hexafluorosilicate; Zinc Fluosilicate; Zinc Silicofluoride Hexahydrate; Zinc Hexafluorosilicate Hexahydrate; Silicate(2-), hexafluoro-, zinc (1:1); Zinc(II) hexafluorosilicate
EINECS	242-314-1

Quality Control

Our Zinc Silicofluoride is manufactured under strict process controls to ensure batch-to-batch consistency and high purity. The product undergoes rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) documenting key parameters such as assay, heavy metal content, and loss on drying are available upon request.

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 after each use to prevent caking and degradation. Recommended storage temperature: 15-25°C.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as ZnSiF6•6H2O)	≥ 98.0 %
Loss on Drying	≤ 2.0 %
Water Insoluble Matter	≤ 0.5 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.02 %
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.