Description

Lead Bisilicate is an inorganic compound primarily utilized as a specialized flux and glass-forming agent in industrial manufacturing. Its value lies in its ability to modify melting points and enhance the chemical durability and optical properties of glass and ceramic matrices. This product is essential for manufacturers in the glass, ceramics, and specialty coatings industries seeking to improve product performance and process efficiency.

Application

• As a fluxing agent in the production of specialty glasses, including optical and sealing glasses.
• As a key component in ceramic glazes and frits to lower firing temperatures and improve surface finish.
• In the formulation of vitreous enamels for metal substrates, providing corrosion resistance and aesthetic appeal.
• As a raw material in the synthesis of specific electronic ceramics and dielectric materials.
• For use in radiation shielding glass formulations due to lead's high density.
• In the production of solders and brazing alloys as a flux constituent.
• As a stabilizer and modifier in certain types of crystal glassware.

Basic Information

Product Name	Lead Bisilicate
CAS No.	65997-18-4
Molecular Formula	PbO·2SiO2 or PbSi2O5
Molecular Weight	343.37 g/mol (approx.)
Synonyms	Lead Silicate (1:2); Lead(II) Metasilicate; Lead Monosilicate; Lead Glass Frit; Silicic Acid, Lead Salt; EINECS 266-058-6; Lead Oxide Silica
EINECS	266-058-6

Quality Control

Our Lead Bisilicate is produced under strict quality management protocols to ensure batch-to-batch consistency and compliance with relevant industrial specifications. Each lot is analyzed for key parameters including lead oxide content, silica content, and impurity levels. Certificates of Analysis (COA) documenting purity, physical properties, and heavy metal limits are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Keep container tightly sealed when not in use to minimize exposure to atmospheric moisture and carbon dioxide.

Specification

Item	Specification
Appearance	White to off-white powder
Assay (as PbO)	Min. 85%
SiO2 Content	25 - 30%
Particle Size (Mesh)	-200 Mesh (or as required)
Loss on Drying	Max. 1.0%
Heavy Metals (as Pb)	Conforms

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