The chemical formula for talc is Mg3Si4O10(OH)2.
Physical Properties of Talc:
| Properties | Details |
| Cleavage | Perfect basal cleavage (sheets or flakes) |
| Color | White, gray, or pale green |
| Crystal System | Monoclinic |
| Density | 2.7 – 2.8 g/cm³ |
| Hardness | 1 (Mohs scale) |
| Luster | Pearly or greasy |
| Melting Point | Approximately 1500°C |
| Specific Gravity | 2.7 – 2.8 |
| Streak | White |
| Transparency | Translucent to opaque |
Chemical Properties of Talc:
| Properties | Details |
| Absorption | Absorbs oils and moisture |
| Acid Resistance | Resistant to most acids |
| Alkali Resistance | Generally unaffected by alkalis |
| Chemical Formula | Mg3Si4O10(OH)2 |
| Composition | Magnesium silicate |
| Flame Retardancy | Talc has flame-retardant properties |
| pH | Neutral to slightly alkaline |
| Reactivity | Non-reactive |
| Solubility | Insoluble in water and organic solvents |
| Thermal Stability | Stable up to high temperatures |
Reactions of talc with Alkali Metal
| Alkali Metal | reaction | |
| Lithium (Li) | 2Li + ( talc ) react and convert into Li2SiO3 + 3Mg(OH)2 + H2 | |
| Sodium (Na) | 2Na + ( talc ) react and convert into Na2SiO3 + 3Mg(OH)2 + H2 | |
| Potassium (K) | 2K + ( talc ) react and convert into K2SiO3 + 3Mg(OH)2 + H2 | |
| Rubidium (Rb) | 2Rb + ( talc ) react and convert into Rb2SiO3 + 3Mg(OH)2 + H2 | |
| Cesium (Cs) | 2Cs + ( talc ) react and convert into Cs2SiO3 + 3Mg(OH)2 + H2 |
Reactions of talc with Alkaline Earth Metal
| Alkaline Earth Metal | reaction | |
| Beryllium (Be) | Be + ( talc ) + 2H2O react and convert into BeSiO3 + 3Mg(OH)2 + H2 | |
| Magnesium (Mg) | no reaction occur hence no product formed | |
| Calcium (Ca) | no reaction occur hence no product formed | |
| Strontium (Sr) | no reaction occur hence no product formed | |
| Barium (Ba) | no reaction occur hence no product formed | |
| Radium (Ra) | no reaction occur hence no product formed |
Reactions of talc with Non-Transition Metal
| Non-Transition Metal | reaction | |
| Aluminum (Al) | no reaction occur hence no product formed | |
| Gallium (Ga) | no reaction occur hence no product formed | |
| Indium (In) | no reaction occur hence no product formed | |
| Tin (Sn) | no reaction occur hence no product formed | |
| Thallium (Tl) | no reaction occur hence no product formed | |
| Lead (Pb) | no reaction occur hence no product formed | |
| Bismuth (Bi) | no reaction occur hence no product formed | |
| Aluminum (Al) | no reaction occur hence no product formed | |
| Silicon (Si) | no reaction occur hence no product formed |
Reactions of talc with Non-Metal
| Non-Metal | reaction | |
| Hydrogen (H) | no reaction occur hence no product formed | |
| Carbon (C) | no reaction occur hence no product formed | |
| Nitrogen (N) | no reaction occur hence no product formed | |
| Oxygen (O) | no reaction occur hence no product formed | |
| Fluorine (F) | no reaction occur hence no product formed | |
| Phosphorus (P) | no reaction occur hence no product formed | |
| Sulfur (S) | no reaction occur hence no product formed | |
| Chlorine (Cl) | no reaction occur hence no product formed | |
| Iodine (I) | no reaction occur hence no product formed | |
| Bromine (Br) | no reaction occur hence no product formed |
Reactions of talc with Metalloid
| Metalloid | reaction | |
| Boron (B) | no reaction occur hence no product formed | |
| Silicon (Si) | no reaction occur hence no product formed | |
| Germanium (Ge) | no reaction occur hence no product formed | |
| Arsenic (As) | no reaction occur hence no product formed | |
| Antimony (Sb) | no reaction occur hence no product formed | |
| Tellurium (Te) | no reaction occur hence no product formed | |
| Polonium (Po) | no reaction occur hence no product formed |