SOAPSTONE POWDER /LUMP (TALC)
MINERAL
Soapstone Powder /Lump (Talc)
Soapstone, also known as steatite, is a metamorphic rock composed primarily of talc, a hydrated magnesium silicate mineral. It is characterized by its softness, greasy texture, and can vary in color from white and gray to green, depending on its mineral composition.
- Soapstone is one of the softest minerals, ranking 1 on the Mohs hardness scale. It can be easily scratched with a fingernail and is readily cut with a knife.
- Predominantly composed of talc (Mg3Si4O10(OH)2) with varying amounts of other minerals like chlorite, pyroxene, and amphibole.
- Used as a filler to improve the strength and thermal shock resistance of ceramic products.
- Provides a matte finish and enhances durability in paints and coatings.
- Acts as a filler to improve dimensional stability and mechanical properties of plastics.
- Enhances the properties of rubber products such as flexibility and resistance to abrasion.
| Chemical Composition | Talc Powder Ordinary | Talc Powder Micro 400 (Mesh) | Talc Powder Super Micro 500 (Mesh) |
|---|---|---|---|
| Whiteness as compared with 100% MgO | 88-90% | 92% (±1%) | 95% (± 1%) |
| Bulk Density (gm/ml) | 0.55 | 0.40-0.55 | 0.40-0.55 |
| pH | 8-9 | 8-9 | 8-9 |
| Moisture | 0.58 | 0.58 | 0.58 |
| Loss On Ignition | 4-6 | 4-6 | 4-6 |
| Silica as SiO2 | 58-60 | 58-60 | 60-62 |
| Magnesia as MgO | 28-30 | 28-30 | 30-32 |
| Alumina as A12O3 | 0.50 1.00 (max.) | 1-2 | Traces |
| Iron as Fe2O3 | 1-2 (max.) | 0.5 -1.5 | Traces |
| Calcium Oxide as CaO | 2-3 | 3-5 | 0.5 |
| Residue On 300 MESH | 0.5 | 0.15 | 0.15 |