China Cosmetic Grade Talc Powder Suppliers: High-Quality Talc from Reliable Factory for Makeup and Personal Care
| Chemical Component | Typical Content | Description |
|---|---|---|
| SiO2 | 58% - 63% | Main silicate component |
| MgO | 28% - 32% | Main magnesium component |
| Al2O3 | ≤ 2.0% | Controlled impurity |
| Fe2O3 | ≤ 1.0% | Affects whiteness and color |
| CaO | ≤ 1.5% | Minor component |
| Na2O + K2O | ≤ 1.0% | Alkali components |
| Loss on Ignition | 4% - 6.5% | Related to mineral structure and moisture |
Frequently Asked Questions (FAQ)
What are the primary chemical components of this mineral product?
The main constituents are Silicon Dioxide (SiO2) at 58% – 63% and Magnesium Oxide (MgO) at 28% – 32%, which define the base silicate structure and chemical stability of the material.
Why is the content of Fe2O3 strictly controlled below 1.0%?
Iron oxide (Fe2O3) directly impacts product whiteness, color purity, and electrical insulation properties. Keeping it below 1.0% ensures high whiteness and optimal performance in industrial applications.
What does the "Loss on Ignition" (LOI) value represent?
Loss on Ignition (4% - 6.5%) represents the percentage of mass lost when the mineral is heated to high temperatures, primarily caused by the release of chemically bound structural water and trace moisture.
How do minor elements like CaO and Al2O3 affect product quality?
Al2O3 and CaO are controlled impurities kept under 2.0% and 1.5% respectively. Tight regulation prevents unintended chemical reactions and ensures uniform physical and mechanical properties.
What is the significance of the low alkali content (Na2O + K2O ≤ 1.0%)?
Low alkali concentrations reduce water solubility, decrease chemical reactivity, and enhance the dielectric and thermal stability of the processed material.
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