/ uhm • bruh /
Umbra
- Overview
- History of use
- Making the pigment
- Technical details
A painted swatch of Umbra:
About the chemical structure:
| Chemical name: |
Iron(III)-oxide containing manganese(IV)-oxide |
| Formula: |
Fe2O3 · MnO2 |
| Refractive index: |
n/a |
How can you identify Umbra?
Chemical identification:
n/a
Spectra:
Usage and handling:
| Permanence: |
Toxicity: |
| excellent |
non toxic |
Sections: