Description

Lithium Polysilicate is an inorganic polymer compound formed from lithium oxide and silica, known for its unique combination of alkali metal and silicate properties. This material is valued for its role as a high-performance binder and corrosion-resistant component in industrial coatings and ceramics. It is essential for manufacturers in the protective coatings, foundry, and construction chemical industries seeking to enhance product durability and thermal stability. Its chemical stability under alkaline conditions makes it a versatile intermediate for specialized material synthesis.

Application

• Inorganic Zinc-Rich Primers: Serves as a critical binder in high-performance anti-corrosion coatings for marine, offshore, and industrial steel structures.
• High-Temperature Resistant Coatings: Used as a binder in paints and coatings designed for exhaust systems, industrial furnaces, and engines.
• Foundry Mold Binders: Acts as an inorganic binder in investment casting and core-making processes, providing excellent dimensional stability at elevated temperatures.
• Concrete Sealers and Hardeners: Functions as a reactive component in formulations that densify and protect concrete floors and surfaces.
• Ceramic Glazes and Frits: Imparts low thermal expansion and chemical durability in specialty glass and ceramic compositions.
• Adhesives and Cements: Utilized in acid-resistant and high-temperature setting inorganic adhesives for industrial applications.
• Catalyst Support Material: Provides a stable, high-surface-area substrate for certain heterogeneous catalysts.
• Fire-Resistant Materials: Incorporated into intumescent paints and passive fire protection systems.

Basic Information

Product Name	Lithium Polysilicate
CAS No.	12627-14-4
Molecular Formula	Li2O·nSiO2 (variable composition)
Molecular Weight	Variable (based on SiO2/Li2O ratio)
Synonyms	Lithium Silicate; Lithium Polysilicate Solution; Lithium Water Glass; Lithium Metasilicate; Lithium Orthosilicate; Silicic Acid, Lithium Salt; CAS 12627-14-4; Lithium Silicon Oxide
EINECS	Contact for details

Quality Control

Our Lithium Polysilicate is manufactured under a stringent quality management system. Each batch is tested against key parameters including SiO2/Li2O molar ratio, solids content, viscosity, density, and pH to ensure batch-to-batch consistency and performance. Certificates of Analysis (COA) documenting these specifications are provided with every shipment. We adhere to relevant industrial standards and can support compliance requirements for global supply chains.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. The product is alkaline; ensure containers are properly sealed to prevent absorption of atmospheric carbon dioxide.

Specification

Item	Specification
Appearance	Clear, colorless to slightly hazy liquid
SiO2 Content	20 - 22 % (w/w)
Li2O Content	1.5 - 2.0 % (w/w)
SiO2/Li2O Molar Ratio (Typical)	4.5 - 5.5
Density (20°C)	1.18 - 1.22 g/mL
pH (20°C)	10.5 - 11.5
Viscosity (20°C)	10 - 50 mPa·s
Identification (IR)	Conforms

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