Description

Calcium Hexafluorosilicate Dihydrate is an inorganic salt primarily valued as a high-purity source of fluoride and hexafluorosilicate ions. This compound is critical for industrial processes requiring controlled fluoride release and chemical stability. It is essential for manufacturers in the water treatment, ceramics, and specialty chemical synthesis sectors seeking reliable and consistent raw materials.

Application

• Water Fluoridation and Treatment: Used as a source of fluoride ions for municipal water treatment to prevent dental caries and in industrial water systems.
• Ceramics and Glass Manufacturing: Acts as a fluxing agent and opacifier to lower melting temperatures and modify the optical properties of glass and ceramic glazes.
• Metal Surface Treatment: Employed in metal finishing and electroplating baths for surface preparation and coating processes.
• Wood Preservation: Serves as a component in formulations to protect lumber from fungal decay and insect infestation.
• Chemical Synthesis: Used as a precursor or reagent in the production of other fluorosilicate compounds and specialty fluorides.
• Laundry Sour and Stain Remover: A key ingredient in industrial and institutional laundry products to neutralize alkalinity and aid in stain removal.

Basic Information

Product Name	Calcium Hexafluorosilicate Dihydrate
CAS No.	16961-80-1
Molecular Formula	CaSiF6·2H2O
Molecular Weight	218.17 g/mol
Synonyms	Calcium Fluorosilicate Dihydrate; Calcium Silicofluoride Dihydrate; Hexafluorosilicate(2-) Calcium Dihydrate; Calcium Fluosilicate Dihydrate; Calcium Hexafluorosilicate(2-) Dihydrate; Fluosilicic Acid, Calcium Salt, Dihydrate; IUPAC: Calcium hexafluoridosilicate(2-) dihydrate
EINECS	241-032-0

Quality Control

Our Calcium Hexafluorosilicate Dihydrate is manufactured under a stringent quality management system. 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 profiles is provided with every shipment to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and incompatible with strong alkalis; keep the container tightly sealed and separate from incompatible substances.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (CaSiF6·2H2O)	≥ 98.0 %
Water Insoluble Matter	≤ 0.5 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.05 %
Heavy Metals (as Pb)	≤ 10 ppm
Loss on Drying	≤ 16.5 %

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