SiO₂ 99.77%, Fe₂O₃ 5 ppm, Whiteness L 97.92 — Natural High-Purity Raw Stone Supply
Premium Natural High-Purity Quartz is supplied as a raw stone achieving ultra-high purity of SiO₂ 99.77% and Fe₂O₃ 5 ppm, along with top-grade whiteness of L 97.92, through rigorous vein selection and refining processes. It serves as a foundational raw material for high-value-added industries such as premium glass, EGS/engineered stone, electronic materials, precision casting, and semiconductor crucibles.
Key Features
- 🧱 Overwhelming Purity — SiO₂ 99.773% — ideal base material for EGS, specialty glass, and electronic materials
- 🧼 Ultra-Low Iron Content — Fe₂O₃ 5 ppm — maintains transparency and whiteness without yellowing
- ⚡ Excellent Insulation Performance — EC 2.12 µs/cm — ensures reliability as an electronic-material filler
- ✨ Top-Grade Whiteness — L 97.92 — optimal for premium engineered stone and architectural interior/exterior materials
- 🪨 Natural Raw Stone Supply — Supplied as refined high-purity natural raw stone
- 🧪 Neutral Stability — pH 6.73 — applicable to diverse chemical processes
Technical Specifications
| Item | Value | Note |
|---|---|---|
| SiO₂ (Silicon Dioxide) | 99.773% | Ultra-high purity |
| Fe₂O₃ (Iron Oxide) | 5 ppm | Ultra-low iron (key) |
| TiO₂ (Titanium Oxide) | 9 ppm | Trace |
| Al₂O₃ (Aluminum Oxide) | 1053 ppm | General level |
| Whiteness (L) | 97.92 | Top-grade whiteness |
| Electrical Conductivity (E.C) | 2.12 µs/cm | Excellent insulation |
| pH | 6.73 | Neutral stability |
Main Applications
EGS / Engineered Stone · Electronic Materials
Particle size, purity, surface treatment and packaging can be customized to your specification. Contact us for samples, TDS and quotations.