Description

Sodium Metasilicate Nonahydrate is a highly versatile inorganic salt and a powerful alkaline builder. This compound is critical in industrial processes where effective cleaning, buffering, and silicate deposition are required. It is essential for manufacturers and formulators in the detergent, ceramics, metal surface treatment, and construction industries seeking a reliable and cost-effective source of soluble silicate.

Application

• Detergent & Cleaning Formulations: Acts as a powerful builder, emulsifier, and corrosion inhibitor in industrial and institutional cleaners, laundry detergents, and dishwashing compounds.
• Metal Surface Treatment: Used in metal cleaning, degreasing, and as a component in corrosion-resistant coatings and paint strippers.
• Ceramics & Refractories: Serves as a binder and deflocculant in ceramic slips, casting molds, and refractory cements.
• Construction & Concrete: Functions as an accelerator in concrete setting and as a component in waterproofing and acid-resistant cements.
• Pulp & Paper Industry: Utilized in de-inking processes and as a peroxide stabilizer in pulp bleaching.
• Textile Processing: Employed in scouring, bleaching, and dyeing processes for cotton and other fibers.
• Water Treatment: Acts as a corrosion and scale inhibitor in boiler and cooling water systems.
• Adhesives & Sealants: Used as a cross-linking agent and filler in certain inorganic adhesive formulations.

Basic Information

Product Name	Sodium Metasilicate Nonahydrate
CAS No.	13517-24-3
Molecular Formula	Na2SiO3·9H2O
Molecular Weight	284.20 g/mol
Synonyms	Disodium metasilicate nonahydrate; Sodium silicate nonahydrate; Silicic acid (H2SiO3), disodium salt, nonahydrate; Water glass (solid form); Soluble glass; Orthosil; Metso beads; Disodium trioxosilicate nonahydrate
EINECS	236-924-1

Quality Control

Our Sodium Metasilicate Nonahydrate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets consistent purity and physical specifications. While available in standard industrial and technical grades, our quality commitment ensures reliable performance. A Certificate of Analysis (COA) detailing key parameters is provided with every shipment.

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 packaging or a moisture-proof container to prevent caking and degradation. Keep away from strong acids.

Specification

Item	Specification
Appearance	White crystalline granules or powder
Identification (IR)	Conforms
Assay (as Na2SiO3·9H2O)	≥ 98.0 %
Alkalinity (as Na2O)	28.5 - 30.0 %
SiO2 Content	27.5 - 29.0 %
Water Insoluble Matter	≤ 0.2 %
Iron (Fe)	≤ 0.02 %
Heavy Metals (as Pb)	≤ 10 ppm

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