470-1200C (878-2192F)
Manganese dioxide decomposes to MnO
This happens in stages: MnO2 to Mn2O3 to Mn3O4 and finally to MnO. The LOI is 18%.
Related Information
How do metal oxides compare in their degrees of melting?
This picture has its own page with more detail, click here to see it.
These metal oxides have been mixed with 50% Ferro frit 3134 and fired to cone 6 oxidation. Chrome and rutile have not melted, copper and cobalt are extremely active melters, frothing and boiling. Cobalt and copper have crystallized during cooling. Manganese has formed an iridescent glass.
Links
| Materials |
Manganese Dioxide
A source of MnO used in ceramic glazes and the production of ceramic stains. Commonly made by grinding pyrolusite rock. |
| Temperatures | Manganese compounds may begin to fume (932-) |
| URLs |
https://fscimage.fishersci.com/msds/13610.htm
Fisher Scientific MnO2 SDS |
| URLs |
https://www.sciencedirect.com/science/article/abs/pii/S0925838823025112#:~:text=Manganese%2520dioxide%2520(MnO2)%2520undergo,reaching%2520to%25201200%2520%C2%B0C.
The decomposition of MnO2. |