Description

Xonotlite is a naturally occurring calcium silicate hydrate mineral with the chemical formula Ca6Si6O17(OH)2. This compound is valued for its excellent thermal stability, low thermal conductivity, and unique fibrous or acicular crystal morphology, making it a critical material for high-performance insulation and composites. It is primarily sought by manufacturers in the construction, refractory, and advanced materials industries for producing lightweight, fire-resistant boards, insulating cements, and specialized filler applications.

Application

• High-Temperature Insulation: As a key component in calcium silicate boards and pipes for industrial furnaces, boilers, and thermal process equipment.
• Refractory Castables & Cements: Used to enhance the strength, thermal shock resistance, and dimensional stability of monolithic refractories.
• Lightweight Construction Materials: Incorporated into autoclaved aerated concrete (AAC) and other building products to improve insulation properties and reduce weight.
• Friction Materials: Acts as a functional filler in brake pads and clutch facings to modulate friction and improve durability.
• Polymer Composites: Serves as a reinforcing agent in plastics and rubber to improve mechanical properties and heat resistance.
• Acoustic Insulation Panels: Utilized in materials designed for sound dampening and noise control due to its porous structure.
• Catalyst Support: Provides a stable, high-surface-area substrate for certain catalytic processes in chemical manufacturing.
• Specialty Papers & Coatings: Used as a filler or extender to impart specific thermal or mechanical characteristics.

Basic Information

Product Name	Xonotlite
CAS No.	12141-77-4
Molecular Formula	Ca6Si6O17(OH)2
Molecular Weight	702.31 g/mol
Synonyms	Calcium Silicate Hydrate (Xonotlite); Calcium Hydrogen Silicate; 1,3,5-Cyclohexanetriol, 1,3,5-tris(hydroxymethyl)-; Tobermorite Group Mineral; CSH (Xonotlite Phase); Fibrous Calcium Silicate; Synthetic Xonotlite; Calcium Silicate (1:1:1 Hydrate)
EINECS	235-279-6

Quality Control

Our Xonotlite is produced under strict quality management protocols to ensure batch-to-batch consistency and performance. Quality is verified through a series of analytical tests including X-ray diffraction (XRD) for phase purity, particle size distribution (PSD) analysis, and chemical assay. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic nature, store in a cool, dry place at room temperature (15-25°C/59-77°F) with low humidity. Keep the container tightly sealed when not in use to prevent moisture absorption, which can affect flow properties and performance.

Specification

Item	Specification
Identification (XRD)	Conforms to Xonotlite Reference Pattern
Assay (as Ca6Si6O17(OH)2)	≥ 95.0 %
Loss on Drying (LOD)	≤ 5.0 %
Particle Size (D50)	5 - 50 µm (Customizable)
Bulk Density	0.2 - 0.5 g/cm³
Whiteness Index	≥ 85 %
pH (10% Slurry)	9.0 - 11.0

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