Description

Calcium Silicate is a versatile, high-performance inorganic compound widely used as a functional additive and reinforcing agent. Its unique combination of chemical stability, high surface area, and porosity makes it an essential material for enhancing product performance and process efficiency. Key industries that rely on this compound include construction, food and pharmaceuticals, plastics and polymers, and environmental technology.

Application

• Construction Materials: As a reinforcing filler in cement, concrete, and wallboard to improve strength, durability, and fire resistance.
• Food & Pharmaceutical Industry: Used as an anti-caking agent (E552) in powdered foods, a desiccant, and a tablet/capsule disintegrant in pharmaceutical formulations.
• Plastics & Rubber: Acts as a reinforcing filler and extender to improve mechanical properties, dimensional stability, and heat resistance in various polymer composites.
• Thermal Insulation: A primary component in high-temperature insulation boards and pipe lagging due to its excellent thermal stability and low thermal conductivity.
• Environmental & Filtration: Utilized as an adsorbent for moisture and odors, and as a filter aid in industrial processes.
• Paints & Coatings: Serves as a functional extender pigment to improve scrub resistance, durability, and matting effects.
• Catalyst Support: Provides a stable, high-surface-area carrier for various industrial catalysts.
• Agriculture: Used as a carrier for pesticides and fertilizers, and as a soil conditioner to improve moisture retention.

Basic Information

Product Name	Calcium Silicate
CAS No.	1344-95-2
Molecular Formula	xCaO·ySiO₂·zH₂O
Molecular Weight	Variable (Contact for details)
Synonyms	Calcium Silicate; Calcium Metasilicate; Silicic Acid, Calcium Salt; Wollastonite (natural form); E552 (Food Grade); Calcium Hydrate Silicate; Calcium Polysilicate; Calcium Orthosilicate
EINECS	215-710-8

Quality Control

Our Calcium Silicate is manufactured under stringent quality management systems to ensure batch-to-batch consistency and compliance with relevant industry standards, including FCC for food-grade applications and USP/NF for pharmaceutical uses. Every production lot undergoes rigorous analytical testing, and a comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and heavy metal limits is provided to guarantee product integrity and traceability.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic nature, store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep the container tightly sealed when not in use to prevent moisture absorption and caking. Store away from incompatible materials such as strong acids.

Specification

Item	Specification
Appearance	White to off-white free-flowing powder
Identification (IR)	Conforms
Assay (as CaSiO₃)	≥ 95.0 %
Loss on Drying (105°C)	≤ 5.0 %
pH (10% slurry)	8.0 - 11.0
Bulk Density	0.2 - 0.6 g/mL
Particle Size (D50)	5 - 50 µm
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Lead (Pb)	≤ 3 ppm

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