Description

Talc CAS NO 13376-74-4 is a naturally occurring hydrated magnesium silicate mineral, prized for its softness, chemical inertness, and lamellar structure. It serves as a critical functional additive across numerous industries, providing key properties such as reinforcement, lubrication, and opacity. This versatile mineral is essential for manufacturers in the plastics, paints & coatings, pharmaceuticals, cosmetics, and food processing sectors seeking to enhance product performance and processing efficiency.

Application

• Plastics & Polymers: Acts as a reinforcing filler and anti-blocking agent in polypropylene (PP), polyethylene (PE), and engineering plastics to improve stiffness, heat deflection temperature, and dimensional stability.
• Paints & Coatings: Used as an extender pigment and flatting agent to improve suspension, sheen control, and corrosion resistance in industrial and architectural coatings.
• Pharmaceuticals: Employed as a glidant and anti-adherent in tablet manufacturing to improve powder flow and prevent sticking to punch faces and dies.
• Cosmetics & Personal Care: Functions as an absorbent, texture enhancer, and filler in products like face powders, eyeshadows, and body lotions for its smooth feel and oil control.
• Food Industry (FCC Grade): Used as an anti-caking agent and dusting powder in food processing (e.g., for rice, chewing gum, and confectionery) and as a release agent.
• Paper Manufacturing: Serves as a filler and coating pigment to improve paper smoothness, opacity, printability, and ink absorption.
• Ceramics: Added to ceramic bodies and glazes to modify thermal expansion, improve mechanical strength, and control matteness.
• Rubber Industry: Utilized as a filler to aid in processing, improve surface finish, and provide reinforcement in various rubber compounds.

Basic Information

Product Name	Talc
CAS No.	13376-74-4
Molecular Formula	Mg3Si4O10(OH)2 or H2Mg3O12Si4
Molecular Weight	379.27 g/mol
Synonyms	Soapstone; Talcum; French Chalk; Steatite; Magnesium Silicate Hydrate; Agalite; Mineral White; CI 77718; Cosmetic Talc; Industrial Talc; Fibrous Talc; Micronized Talc
EINECS	215-108-5

Quality Control

Our Talc is produced and controlled under a stringent quality management system to ensure batch-to-batch consistency and compliance with relevant industry specifications. We offer various grades, including Industrial, Cosmetic, Pharmaceutical (USP/EP), and Food Chemical Codex (FCC) grades, each meeting specific purity and heavy metal limits. A comprehensive Certificate of Analysis (COA) detailing parameters such as particle size distribution, whiteness, loss on ignition, and assay is provided with every shipment.

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. Talc is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	White to off-white fine powder
Identification (IR)	Conforms
Assay (as MgO)	≥ 30.0 %
Loss on Ignition (1000°C)	4.0 - 6.5 %
Acid Soluble Matter	≤ 2.0 %
Water Soluble Substances	≤ 0.2 %
Particle Size (D50)	5 - 25 µm (Grade dependent)
Whiteness Index	≥ 90 %
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 3 ppm
Microbiological Count (for specific grades)	Meets USP/EP requirements

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