Description

Calcium Metasilicate is an important inorganic silicate compound widely used as a functional filler and reinforcing agent. Its unique combination of chemical inertness, thermal stability, and fibrous or acicular particle morphology provides significant value in enhancing material properties. This product is essential for manufacturers in the plastics, rubber, paints & coatings, and construction industries seeking to improve mechanical strength, dimensional stability, and thermal performance. Calcium Metasilicate CAS NO 13983-17-0 is a key industrial material for formulating high-performance composites and building materials.

Application

• As a reinforcing filler and extender in thermoset and thermoplastic composites to improve stiffness and heat resistance.
• As an anti-caking and free-flow agent in powdered food products and industrial powders.
• In the formulation of paints, coatings, and sealants to enhance durability, weatherability, and corrosion resistance.
• As a functional additive in rubber compounds to improve tensile strength and abrasion resistance.
• In construction materials, such as joint compounds, tiles, and cement boards, for reinforcement and fire resistance.
• As a carrier or adsorbent in agricultural, pharmaceutical, and catalyst applications.
• In friction materials, such as brake pads and clutch facings, for thermal stability and wear properties.
• In ceramic and refractory formulations to modify thermal expansion and mechanical integrity.

Basic Information

Product Name	Calcium Metasilicate
CAS No.	13983-17-0
Molecular Formula	CaSiO3
Molecular Weight	116.16 g/mol
Synonyms	Calcium silicate (1:1); Wollastonite; Calcium monosilicate; Silicic acid (H2SiO3), calcium salt (1:1); Calcium silicon oxide (CaSiO3); Calcium metasilicate (CaSiO3); CAS 13983-17-0
EINECS	237-772-5

Quality Control

Our Calcium Metasilicate is produced under a stringent quality management system. Each batch undergoes rigorous testing for chemical composition, physical properties, and impurity levels to ensure consistency and performance. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing key parameters such as assay, particle size distribution, and loss on ignition. Our quality commitment aligns with industrial standards, and we can support requirements for specific applications upon request.

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 the container tightly sealed when not in use to minimize exposure to atmospheric moisture. Separate from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (as CaSiO3)	≥ 95.0 %
Loss on Ignition (LOI)	≤ 2.0 %
Particle Size (D50)	10 - 50 µm (or as specified)
pH (10% slurry)	9.0 - 10.5
Moisture Content	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm

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