Technical Datasheet
Talc is the world’s softest and most hydrophobic mineral.
Technical Datasheet
Description:
Uses:
Talc Powder (Hydrous Magnesium Silicate) Designations:
- Chemical Name:
Hydrous magnesium silicate - Chemical Formula:
3MgO*4SiO2*H2O
Talc Powder (Hydrous Magnesium Silicate) General Description:
- A mineral which occurs naturally throughout the world. It has a platy structure.
- Talc is a metamorphic mineral resulting from the metamorphism of magnesian minerals such as serpentine, pyroxene, amphibole, olivine, in the presence of carbon dioxide and water. This is known as talc carbonation or steatization and produces a suite of rocks known as talc carbonates.
- Talc is primarily formed via hydration and carbonation of serpentine, via the following reaction;
serpentine + carbon dioxide = talc + magnesite + water
Mg3Si2O5 (OH)4 + 3CO2 = Mg3Si4O10 (OH)2 + 3 MgCO3 + 3 H2O
Talc Powder (Hydrous Magnesium Silicate) Technical Information:
Incompatibilities & Reactivities
None reported
Exposure Routes inhalation, skin and/or eye contact
Symptoms Fibrotic pneumoconiosis, irritation eyes
Target Organs Eyes, respiratory system, cardiovascular system
Personal Protection/Sanitation
Skin : No recommendation
Eyes : No recommendation
Wash skin : No recommendation
Remove : No recommendation
Change : No recommendation
Eye : Irrigate immediately
Allergen : non allergen material non hazardous material
Breathing : Fresh air
Respirator Recommendations
Talc Powder (Hydrous Magnesium Silicate) Chemical Purities Available (a naturalore):
Chemical Composition:
Silicon dioxide= 60.30% – 63.20 % magnesium ore)
Finely ground Magnesium oxide MgO2= 28.54% – 32.14 %
calcium oxide= 0.50% – 1.20%
Talc Powder (Hydrous Magnesium Silicate) Grades Available:
- Ceramic grade (Coarse, medium & fine)
- Cosmetic grade
- Paint grades
- USP grade
- Soapstone grade
- Micronized grade
- Finely ground grade
Talc Powder (Hydrous Magnesium Silicate) Typical Physical Constants:
Hegman Grind= 3- 6
Specific Gravity= 2.6- 2.85
Oil Absorption= 30-55
Appearance= Translucent, Colorless, White, Pale green, Brown
Surface Area= (m2/g) 4.3
Fracture= Sub-Conchoidal
Mohs Hardness= @20°C 1.0- 1.5
pH= 7.5 – 9.5
Crystallography= Lamellar / Triclinic
Refractive Index= 1.59- 1.60
Acid solubility _ < 3% Loss of ignition 1.5 c, 2.5-5
Talc Powder (Hydrous Magnesium Silicate) Typical Applications:
Lubricant, filler, reinforcement, electric and heat insulator, anti stick, anti cake, carrier, thickener, adsorbent, strengthener, ceramics, cosmetics, and pharmaceuticals.
Ground talc makes talcum powder. The massive variety (soapstone) is used for sinks, table tops, etc. Soapstone found a use in Babylonian days when signature cylinder seals were often carved from it.
The Egyptians also used it as a base for some of their blue faience figurines, which were then fired to fuse the glaze. California Indians also used it as sculpture material.
Talc Powder (Hydrous Magnesium Silicate) Packaging Options:
Bags, drums and bulk bags.
Chemical Composition
| Attribute | Specification |
|---|---|
| Silicon dioxide SiO2 | 60.30% – 63.20% |
| Finely ground magnesium oxide MgO2 | 26.54% – 32.14% |
| Calcium Oxide CaO | 0.50% – 1.20% |
Physical specification
| Attribute | Specification |
|---|---|
| Brightness | 97.20% |
| Whiteness | 98.70% |
| Ret. on 500 Mess | 0.2% |
| Moisture Testing | 0.01% |
| Texture | Soapy to Touch |
Result of Chemical Analysis
| Attribute | Specification |
|---|---|
| SiO2 | 60.30% – 63.20% |
| CaO | 0.50% – 1.20% |
| MgO | 20.13% – 32.15% |
| Fe2O3 | 0.2% – 0.5% |
| Al2O3 | 0.2% – 0.10% |
| LOI | 0.02% – 0.06% |
| Na2O | 0.12% |
| K2O | 0.05 % |
| Asbestos Test (Method IR-IS:1462:2019) | Absent |
