Stable Crystalline Structure: The compound has a stable alpha tetragonal crystal phase (hausmannite), providing reliable structural stability.
Good Mechanical Hardness: With a Mohs hardness of 5.5, it offers solid mechanical strength and resistance to wear.
Water Insolubility: Its insolubility in water ensures chemical stability in aqueous environments.
Reactive in Acidic Conditions: It is soluble in hydrochloric acid, allowing controlled reactivity in chemical and industrial processes.
Trimanganese Tetraoxide CAS# 1317-35-7 Trimanganese tetraoxide appears as black tetragonal crystals and exists in two allotropic forms. It has a stable alpha phase, which occurs in a tetragonal crystal structure known as hausmannite, and an unstable beta phase. The compound has a Mohs hardness of about 5.5, is insoluble in water, and dissolves in hydrochloric acid.
Trimanganese tetraoxide Chemical Properties
| Melting point | 1705°C |
| density | 4.8 g/mL at 25 °C(lit.) |
| vapor pressure | 0Pa at 25℃ |
| solubility | insoluble in H2O; soluble in HCl |
| form | Powder |
| color | brown |
| Specific Gravity | 4.856 |
| Water Solubility | insoluble H2O [KIR81]; soluble HCl, releasing Cl2 [MER06] |
| Merck | 135759 |
| crystal system | square |
| Space group | I41/amd |
| Lattice constant | a/nmb/nmc/nmα/oβ/oγ/oV/nm30.575770.575770.94289090900.3125 |
| Stability: | Stable. |
| Major Application | battery manufacturing |
| InChI | 1S/3Mn.4O |
| InChIKey | GVNFAUMGUISVJW-UHFFFAOYSA-N |
| SMILES | O=[Mn]O[Mn]O[Mn]=O |
| CAS DataBase Reference | 1317-35-7(CAS DataBase Reference) |
| EPA Substance Registry System | Manganese tetraoxide (1317-35-7) |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 2 |
| RTECS | OP0895000 |
| TSCA | TSCA listed |
| Storage Class | 11 - Combustible Solids |
| Hazard Classifications | Repr. 2 |
| Toxicity | mouse,LC,inhalation,> 3608ug/m3/2H (3.608mg/m3),American Industrial Hygiene Association Journal. Vol. 41, Pg. 494, 1980. |
Product Application of Trimanganese Tetraoxide CAS# 1317-35-7
Manganese(II,III) oxide is a transition metal oxide typically produced by annealing manganese oxide in air at temperatures above 1000°C. It is widely used in catalytic processes, electrochromic devices, and a variety of energy storage applications.
