Talc
Magnesium Silicate Hydroxide
- CAS
- 14807-96-6
- EC
- 238-877-9
- Sectors
- Plastics & Polymers, Personal Care & Cosmetics, Pharma & Healthcare
Talc (CAS 14807-96-6), also known as magnesium silicate hydroxide, is a naturally occurring mineral supplied as a fine white to off white powder that is chemically inert and moisture absorbing, and is used as a filler and processing aid in plastics, rubber, coatings, ceramics, paper and personal care products. It is valued for its softness, chemical inertness and moisture absorbing properties, making it suitable for a wide range of industrial uses.
Typical Properties
| Molecular formula | H2O3Si.3/4Mg |
|---|---|
| Molecular weight | 379.263 g/mol |
| Appearance | White to almost white micro fine powder, greasy to |
| Form | Powder/Solid |
| Color | White to pale gray |
| Odor | at 100.00?%. odorless |
| Melting point | 900-1000 °C |
| Density | 2.7-2.8 g/cm³ |
| Water solubility | Insoluble in water, cold acids, alkalies. |
| GHS signal word | Danger · Health hazard |
| HS code | 25262020 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Talc
Applications
Used as a filler and processing aid in plastics, rubber and coatings. Applied in ceramics, paper manufacturing and paints. Used in cosmetics and personal care products for texture and moisture control. Also utilised in pharmaceuticals and food applications where permitted.
Safety & Risks
Low toxicity but fine dust may cause respiratory irritation. Avoid inhalation and use appropriate PPE. Maintain good dust control during handling.
Packaging
Supplied in 25 kilogram paper bags or bulk big bags. Store in dry conditions to prevent moisture absorption.