Description

Sodium Fluorosilicate is an important inorganic fluoride salt with the CAS number 16893-85-9. It serves as a key source of fluoride ions and silicon for a variety of demanding industrial processes. This compound is essential for manufacturers in the water treatment, ceramics, and metallurgical industries seeking a reliable and effective chemical agent.

Application

• Water Fluoridation and Treatment: Used as a cost-effective fluoridating agent in municipal water supplies and as an algaecide in industrial water systems.
• Ceramics and Enamel Production: Acts as an opacifier and fluxing agent to lower melting points and enhance the durability and whiteness of ceramic glazes, porcelain, and vitreous enamel.
• Metallurgy: Employed as a flux in aluminum and magnesium refining to remove impurities and improve metal quality.
• Wood Preservation: Functions as an active ingredient in formulations designed to protect lumber from fungal decay and insect infestation.
• Laundry Sour and Cleaning Agents: Utilized in commercial laundry operations as a sour to neutralize alkaline residues and in some industrial cleaning compounds.
• Manufacturing of Other Fluorine Compounds: Serves as a precursor in the synthesis of other silicon fluorides and certain fluoride salts.
• Concrete Hardening and Sealing: Applied in some formulations to densify and harden concrete surfaces, improving resistance to dusting and wear.

Basic Information

Product Name	Sodium Fluorosilicate
CAS No.	16893-85-9
Molecular Formula	Na2SiF6
Molecular Weight	188.06 g/mol
Synonyms	Sodium Hexafluorosilicate; Disodium Hexafluorosilicate; Sodium Silicofluoride; Disodium Silicofluoride; Na2SiF6; Fluorosilicic Acid, Disodium Salt
EINECS	240-934-8

Quality Control

Our Sodium Fluorosilicate is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity levels is provided with every shipment to guarantee consistency and compliance with your application 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 and acids.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (Na2SiF6)	≥ 98.0 %
Water Insoluble Matter	≤ 0.5 %
Loss on Drying	≤ 0.5 %
Chloride (as Cl)	≤ 0.05 %
Sulfate (as SO4)	≤ 0.05 %
Heavy Metals (as Pb)	≤ 10 ppm

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