Chromium(III) oxide (Cr2O3) Micron Powder, Purity: 99%, Average Particle Size: 4.5um
Compound Formula
Cr2O3
Molecular Weight
151.99
Appearance
Green powder or crystals
Melting Point
2435 °C (4415 °F)
Boiling Point
4000 °C (7232 °F)
Density
5.22 g/cm3
Certificate Of Analysis (%)
| Component | Value |
|---|---|
| CrO3 | ≥99.3 |
| Fe2O3 | ≤0.1 |
| Na2O | ≤0.1 |
| CeO | ≤0.01 |
| MgO | ≤0.01 |
| Al2O3 | ≤0.08 |
| SiO2 | ≤0.1 |
| CaO | ≤0.1 |
| Cr6+ | ≤10 |
Particle Size Analysis
| Parameter | Value |
|---|---|
| D10 | 1–2.5 |
| D50 | 4.2–4.65 |
| D90 | 8–11 |
Chromium Oxide Nanoparticles (Cr2O3) Applications:
Chromium(III) oxide is an inorganic compound with the formula Cr2O3. It is one of the main chromium oxides and is widely used as a pigment. In nature, it appears as the rare mineral eskolaite. Due to its strong stability, chromia serves as a reliable pigment and was historically known as viridian. It is used in paints, inks, and glass production, acting as the colorant in “chrome green” and “institutional green.” Chromium(III) oxide also serves as the precursor to the magnetic pigment chromium dioxide through the reaction: Cr2O3 + 3 CrO3 → 5 CrO2 + O2. Additionally, it is commonly used for polishing knife edges on leather in the stropping process.
