Description

Antigorite (Mg3H2(SiO4)2·H2O) is a naturally occurring, hydrated magnesium silicate mineral belonging to the serpentine group. This material is valued for its unique fibrous and platy structure, thermal stability, and chemical inertness, making it a versatile industrial mineral. It is primarily sought by manufacturers in the refractories, ceramics, and construction industries, as well as for use as a functional filler and flame retardant. The CAS number for this compound is 12135-86-3.

Application

• Refractory Materials: Used as a key component in the production of high-temperature bricks, castables, and insulating materials due to its excellent thermal stability.
• Ceramics and Fillers: Acts as a functional filler and reinforcing agent in ceramic bodies, paints, plastics, and rubber to improve mechanical properties and dimensional stability.
• Construction Materials: Incorporated into fire-resistant boards, panels, and cementitious products for enhanced fireproofing and insulation properties.
• Flame Retardant Additive: Utilized in polymers, cables, and textiles as a non-halogenated, environmentally friendly flame retardant and smoke suppressant.
• Agricultural Amendments: Serves as a source of magnesium and silicon in soil conditioners and slow-release fertilizers.
• Catalyst Support: Provides a stable, high-surface-area substrate for various industrial catalysts.

Basic Information

Product Name	Antigorite
CAS No.	12135-86-3
Molecular Formula	Mg3H2(SiO4)2·H2O or Mg3Si2O5(OH)4
Molecular Weight	277.11 g/mol (anhydrous basis)
Synonyms	Antigorite; Serpentine (Antigorite); Magnesium Silicate Hydroxide; Hydrated Magnesium Silicate; Bowenite (gem variety); Picrosmine; Picrolite; Baltimorite; Williamsite
EINECS	235-252-2

Quality Control

Our Antigorite products undergo rigorous quality testing to ensure compliance with industry standards and batch-to-batch consistency. Key parameters such as chemical composition, particle size distribution, loss on ignition (LOI), and specific surface area are strictly monitored. Certificates of Analysis (COA) detailing these specifications are available upon request to support your quality assurance protocols.

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 away from incompatible materials such as strong acids. The material is generally stable but may be hygroscopic; prolonged exposure to high humidity should be avoided to prevent caking.

Specification

Item	Specification
Appearance	White to pale green powder
Identification (XRD)	Complies (Antigorite pattern)
Assay (as MgO)	≥ 42.0 %
Assay (as SiO2)	≥ 43.0 %
Loss on Ignition (LOI)	12.0 - 14.0 %
Particle Size (D50)	10 - 50 µm (customizable)
Specific Surface Area (BET)	5 - 20 m²/g
Heavy Metals (as Pb)	≤ 20 ppm

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