Description

Steatite CAS NO 63210-56-0 is a high-purity, naturally occurring mineral form of talc, primarily composed of magnesium silicate hydroxide. This material is valued for its exceptional electrical insulation properties, high mechanical strength, and excellent thermal stability. It is a critical raw material for manufacturers in the electrical, ceramic, and refractory industries seeking reliable performance in demanding high-temperature and high-voltage environments.

Application

• Electrical Insulators: Core material for high-voltage insulators, standoffs, and arc chutes due to its superior dielectric strength.
• Technical Ceramics: Used in the production of kiln furniture, saggars, and thermocouple protection tubes for its thermal shock resistance.
• Refractory Components: An additive in refractory bricks and shapes to enhance thermal stability and structural integrity in furnaces.
• Foundry Coatings: Acts as a parting agent and mold wash in metal casting processes.
• Specialty Glass & Enamels: A fluxing agent and opacifier in certain glass formulations and ceramic glazes.
• Laboratory Ware: Manufacture of combustion boats, burner tips, and other lab equipment requiring chemical inertness.
• Electronics Substrates: Used as a substrate material for thick-film and hybrid microelectronics.
• Friction Materials: A functional filler in brake linings and clutch facings.

Basic Information

Product Name	Steatite
CAS No.	63210-56-0
Molecular Formula	Mg3Si4O10(OH)2
Molecular Weight	379.27 g/mol (for the ideal talc formula)
Synonyms	Talc (soapstone); Magnesium silicate hydroxide; French chalk; Steatite talc; Soaprock; Soapstone; Agalite; Mineral talc; Talcum; Hydrous magnesium silicate; Nytal; Talcite; Kerolite; Purtalc; Talco
EINECS	Contact for details

Quality Control

Our Steatite is sourced and processed to meet stringent quality standards for industrial applications. Quality is assured through rigorous in-process and batch testing, including analysis of mineralogical composition, particle size distribution, and key impurity levels. While we offer standard technical and ceramic grades, specifications can be adjusted based on application needs. A Certificate of Analysis (COA) is provided with every shipment to guarantee consistency and traceability.

Storage

Preserve in a tightly closed container, protected from light. 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 contamination from other materials.

Specification

Item	Specification
Appearance	White to off-white fine powder
Identification (IR)	Conforms to standard
Assay (as MgO)	≥ 30.0 %
Loss on Ignition	4.0 - 6.0 %
Acid Soluble Matter	≤ 2.0 %
Particle Size (D50)	10 - 25 µm (customizable)
Moisture Content	≤ 0.5 %

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