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:

a) Chemical Name:
    Hydrous magnesium silicate
b) Chemical Formula:

Talc Powder (Hydrous Magnesium Silicate) General Description:

a) A mineral which occurs naturally throughout the world. It has a platy structure
b) 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.
c) 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= 56.3-61.00 % magnesium ore)
    Finely ground Magnisum oxide MgO2= 28.-32 %
    calcium oxide= 5.0%

  • Talc Powder (Hydrous Magnesium Silicate) Grades Available:
  • a) Ceramic grade (Coarse, medium & fine)
    b) Cosmetic grade
    c) Paint grades
    d) USP grade
    e) Soapstone grade
    f) Micronized grade
    g) 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.


  • 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


    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