Description

Sodium Metasilicate Pentahydrate is an inorganic, highly alkaline salt widely used as a versatile cleaning and processing agent. Its core value lies in its powerful detergency, emulsification, and saponification properties, making it an effective and economical builder in industrial formulations. This product is essential for manufacturers and processors in the detergent, chemical processing, and metal surface treatment industries seeking a reliable source of high-quality alkali silicate.

Application

• Detergent & Cleaner Manufacturing: A key builder in powdered and liquid industrial & institutional (I&I) cleaners, laundry detergents, and dishwashing compounds for its grease-cutting and soil-suspending power.
• Metal Surface Treatment: Used in metal cleaning, degreasing, and derusting formulations prior to painting, plating, or other finishing processes.
• Ceramic & Clay Processing: Acts as a deflocculant and binder to control viscosity and improve the workability of ceramic slips and clay bodies.
• Adhesive & Sealant Production: Serves as a corrosion inhibitor and setting agent in silicate-based cements and adhesives.
• Textile Processing: Employed in scouring and bleaching baths to remove natural waxes and impurities from fibers.
• Pulp & Paper Industry: Used in de-inking processes and as a peroxide stabilizer in pulp bleaching.
• Water Treatment: Functions as a corrosion inhibitor and dispersant in boiler and cooling water systems.
• Chemical Intermediate: A precursor in the synthesis of silica gels, zeolites, and other silicate compounds.

Basic Information

Product Name	Sodium Metasilicate Pentahydrate
CAS No.	10213-79-3
Molecular Formula	Na2SiO3·5H2O
Molecular Weight	212.14 g/mol
Synonyms	Disodium metasilicate pentahydrate; Sodium silicate pentahydrate (1:1:5); Silicic acid (H2SiO3), disodium salt, pentahydrate; Metso Pentabead® 20; Disodium trioxosilicate pentahydrate; Waterglass (solid form); Soluble glass
EINECS	229-912-9 (anhydrous base)

Quality Control

Our Sodium Metasilicate Pentahydrate is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for alkalinity, silicate content, and physical properties. Certificates of Analysis (COA) documenting purity, assay, and other critical parameters are provided to guarantee supply consistency and performance reliability for your industrial processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be kept in original, moisture-proof packaging. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	White granules or powder
Identification (IR)	Conforms
Assay (as Na2SiO3·5H2O)	≥ 98.0 %
Alkalinity (as Na2O)	28.5 - 30.5 %
SiO2 Content	27.5 - 29.5 %
Water Insoluble Matter	≤ 0.2 %
Iron (Fe)	≤ 0.02 %
Loss on Drying	37.0 - 40.0 %

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