Home - Magsil® Talc Product Portfolio | RBH Ltd Magsil® Talc Magsil® Talc is a naturally occurring hydrated magnesium silicate used as a functional filler, extender, and performance additive, enhancing stiffness, surface finish, and processing in Plastics & Thermoplastics, rubber, coatings, and composite formulations. CAS NUMBER: 14807-96-6 Request A Sample Names Talc| Magnesium Silicate| Hydrated Magnesium Silicate| Cosmetic Talc Chemical formula Mg₃Si₄O₁₀(OH)₂ Product Overview Magsil® Talc is a high quality, naturally occurring hydrated magnesium silicate used as a versatile functional mineral across a wide range of industries. As a performance additive and extender, it improves stiffness, dimensional stability, surface finish and cost in use in plastics, rubber, coatings, adhesives and composites. Available in a wide selection of particle sizes and engineered grade families, Magsil® Talc supports improved melt behaviour, opacity and reinforcement while contributing to lightweighting and enhanced mechanical performance. Its compatibility with multiple polymer systems and formulation types makes it a dependable choice for formulators seeking consistent quality, reliable supply and performance optimisation. The Magsil® portfolio includes established grade families such as STAR, DIAMOND, SUPER, ULTRAFINE, PEARL and JADE, alongside high brightness and performance ranges including SAPPHIRE, AMETHYST and TOPAZ. Additional technical grades such as 2628A, 2628C and 3183A provide targeted particle size and performance options for applications requiring specific reinforcement, processing or cost balance. Further niche grades, including 2628E and 4230, are also available to support specialised or legacy formulation requirements where specific characteristics are needed. Particle size and grade options Magsil® Talc is available across a controlled range of particle size distributions to meet different formulation and processing needs. Grades are offered from fine micronised options at approximately 2 µm (d50) through to coarser reinforcement grades of around 20 µm (d50), with mid range grades commonly used where balanced dispersion and mechanical performance are required. RBH’s Magsil® range is selected based on: Purity and brightness requirements Controlled particle size distribution from micronised to standard technical grades Application needs such as rigidity, shrinkage control and surface finish Optimised price to performance balance Technical Profile Technical Profile Key Industries Packaging & Availability Technical Profile of Magsil® Talc Molar Weight 379.27 g/mol Melting Point ~1500 °C (decomposes) Boiling Point - Flash Point Non-combustible Form Fine white powder Key Industries of Magsil® Talc Industries served by this product. Adhesives, Sealants & Construction RBH supplies specialist raw materials for adhesives, sealants, and construction applications, supporting structural, functional, and laminating systems. Our market-driven approach combines high performance materials with technical expertise to address complex formulation challenges and evolving industry requirements. find out more Coatings RBH supplies specialist raw materials for decorative, industrial, powder, and ink coating systems, supporting consistent formulation and dependable performance. Our portfolio includes functional minerals, additives, and base materials designed to meet the technical demands of modern coating manufacture across a wide range of applications. find out more Composites RBH supplies specialist raw materials for composite applications, supporting high-performance, lightweight solutions across a wide range of industries. Our market-led approach combines trusted global supply with technical expertise to meet the evolving demands of modern composite manufacture. find out more Plastics & Thermoplastics RBH supplies specialist additives and mineral fillers for thermoplastic applications, supporting performance, protection, and process efficiency across a wide range of plastic formulations. find out more Rubber RBH supplies specialist raw materials and additives for rubber formulations, supporting performance, processing efficiency, and durability across a wide range of elastomer applications. find out more Ceramics RBH supplies specialist materials for ceramic manufacture and raw material processing, supporting formulation performance, product quality, and processing efficiency across industrial, technical, and functional ceramic applications. find out more Personal Care & Pharmaceuticals RBH supplies specialist materials for personal care and pharmaceutical applications, supporting formulation performance, regulatory compliance, and reliable product quality in cosmetic, skincare, and regulated health environments. find out more Polish and Abrasives RBH supplies specialist raw materials for polishing and abrasive applications, supporting surface finishing, refinement, and performance enhancement across industrial and precision processes. Our materials help deliver consistent finish quality, controlled abrasion, and reliable process performance. find out more Packaging & Availability Available in multiple packaging formats to suit your processing needs, supplied under ISO 9001 quality management systems. Contact RBH for regional stock or customised packing options. 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