RAW TALC

Talc is a clay mineral composed of hydrated magnesium silicate with the chemical formula Mg3Si4O10(OH)2. Talc in powdered form, often in combination with corn starch, is widely used as baby powder. This mineral is used as a thickening agent and lubricant, is an ingredient in ceramics, paint and roofing material, and is also one of the main ingredients in many cosmetic products.

Talc Powder (Hydrous Magnesium Silicate) Synonyms:

Hydrous magnesium silicate, (Mg3H2(SiO3)4), talc powder, cosmetic talc, french talc, montana talc, texas talc, vermont talc, industrial talc, tremolitic talc, steatite talc, fibrous non-tremolite talc, no asbestos talc, magnesium silicate talc, talcum, french chalk, soapstone, steatite, CAS# 14807-96-6,

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):
  • Cosmetic grade
  • Paint grades
  • USP grade
  • Soapstone grade
  • Micronized grade
  • Finely ground grade
  • Talc Powder (Hydrous Magnesium Silicate) Typical Granulations Available:
  • Targets, tablets, pieces, granules and various powder granulations sized between 37 microns to 1.5 microns mean particle size.
  • 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.

DESCRIPTION

Talc is a soft, lamellar inert mineral, which occurs typically as magnesium silicate. The Talc grades exhibit good purity and chemical stability.

USES

These properties typically render the Talc B grades an ideal carrier and functional extender in cosmetics and pharmaceuticals. Further applications include high performance paints and coatings, thermoplastic polymers, waxes, and slip agents.

Attribute Specification
Sio2 58-63 %
MgO 27-32.%
Al2O3 0.5 % – 0.9 %
Fe2O3 0.3 % – 0.6 %
CaO 0.25 % – 1.5 %
Pb Less than 1 ppm
As Less than 1 ppm
Heavy Metals Less than 40 ppm
Physical
Attribute Specification
Whiteness 85 to 98 %
Specific Gravity 2.8
Tapped bulk density 0.4 – 0.7 g/ml
Asbestos Free
Texture Soapy to Touch

Asbestos Not Detected Melting Point Stable up to ca. 9000C Stability Indefinite self life. Resistant to mild acids, alkalis Bulk Density Loose: 270g/l Tapped: 330g/l Packaging 25 / 50kg/ jumbo HDPE bags, PRINTED

Our Quality

The quality of RMCI Talc is ensured by a two tier quality management system. Systematic sampling of ore and talc powder is done from time to time. These samples are analyzed for complete mineralogical and chemical composition. Our vast experience and the huge database collected over the years boosts our customer’s confidence in our talc. Our talc is regularly analyzed for elements which are of importance to our customers. Whiteness, which is a very important criterion for most of our customers, is controlled regularly. Whiteness, brightness and color characterization of our talc is done in-house on ultra-modern equipment.

Our Laboratories

Our laboratories are well equipped for various aspects of powder characterization. Powder properties are measured regularly depending upon the parameters required by our customers. We have a competent team of R&D personnel who can understand the customers’ needs, thereby enabling us to not only recommend the right product to our customers, but to also produce tailor made products, if required. We are always keen to interact with our customers to produce better products for them progressively.

Grinding & Packing

From the mines, the talc ore is brought to our grinding units in Uttaranchal and stored in well-managed ore-yards. The ore is washed and dried to eliminate any unwanted material adhering to it. To maintain high quality and consistency in the end-product, the ore is again dressed and sorted by experienced and skilled manpower. Talc is a natural mineral and requires constant vigilance and pre-processing to produce an uniform end-product. Ore received from mines is analyzed for whiteness and important elements of chemical composition from time to time. Thereafter, the ore is blended to achieve the exact desired properties and stored in feed silo for further processing. The blended ore is then ground to the desired particle size distribution. The talc powder is conveyed to bagging machines where it is packed and sent to the loading point. For More Information