Talc(Soapstone)
Softness. Thermal Stability
Didwaniya Group supplies high-grade talc (soapstone) renowned for its exceptional softness, thermal stability, and consistent mineral purity. Carefully sourced and processed to meet industrial specifications, our talc is suitable for a wide range of applications — from ceramics and paints to cosmetics and polymer fillers — for global buyers who demand performance and reliability.
Talc, commonly known as soapstone when in massive form, is a naturally occurring hydrated magnesium silicate (approx. formula: Mg₃Si₄O₁₀(OH)₂). It is the softest mineral on the Mohs scale (hardness ~1), with a distinctive soapy or greasy feel and excellent cleavage that allows it to be milled to very fine, platy particles. Talc’s chemical inertness, heat resistance, and lubricious surface make it an indispensable raw material across many industrial sectors.
India hosts commercially important talc deposits that are mined and beneficiated to produce grades tailored for specific end-uses. At Didwaniya Group we source from reputable mines and apply strict quality-control during crushing, milling, and packing to ensure low contamination, uniform particle size distribution, and traceable batch-to-batch consistency suitable for both industrial and high-purity markets.
Characteristics
Mineral composition: Hydrated magnesium silicate (talc / soapstone).
Hardness: Mohs ~1 (very soft), distinctly soapy/greasy to the touch.
Appearance: Fine to flaky/massive habit; colours range from white and pale green to gray depending on deposit and impurities.
Specific gravity: Typical range ~2.6–2.8 (deposit dependent).
Particle morphology: Plate-like, platy particles that provide good lubricity and barrier properties when milled.
Purity / contamination: Low levels of unwanted silicates/oxides when beneficiated — custom grades available with controlled levels of iron, calcium and other trace elements.
Moisture content, % (typical/specification): not more than 1.0 (grade dependent).
Thermal stability: Excellent up to moderate firing temperatures; chemically inert under normal processing conditions.
Application
Talc finds broad use across industries: as a functional filler and reinforcement in plastics and rubber to improve stiffness and dimensional stability; as an anti-caking and texturizing agent in cosmetics and personal care formulations (powders, foundations); as a key ingredient in ceramic bodies and glazes to improve firing behavior and whiteness; as a matting and slip agent in paints, coatings and paper; and as a lubricant or release agent in certain manufacturing processes. Specialty talc grades are also used in pharmaceuticals, food-contact applications (where permitted), and advanced technical ceramics.
Storage Condition
Store talc in clean, dry, well-ventilated warehouses protected from moisture, contaminants, and direct sunlight. Keep product in sealed bags or bulk liners on pallets to avoid water ingress and cross-contamination. Recommended relative humidity: low (avoid condensation); ambient temperatures and good housekeeping will maintain product quality and flowability.