PRODUCT Properties
| Melting point: | 1650°C |
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| Density | 5.45 g/mL at 25 °C(lit.) |
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| refractive index | 2.16 |
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| solubility | insoluble in H2O; soluble in acid solutions |
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| form | Powder/Chunks |
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| Specific Gravity | 5.43～5.46 |
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| color | Green |
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| Water Solubility | Soluble in hydrochloric acid. Insoluble in water. |
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| Crystal Structure | NaCl type |
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| crystal system | Cube |
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| Space group | Fm3m |
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| Lattice constant |
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| Exposure limits | ACGIH: TWA 0.02 mg/m3; TWA 0.1 mg/m3 OSHA: Ceiling 5 mg/m3 NIOSH: IDLH 500 mg/m3; TWA 1 mg/m3; STEL 3 mg/m3 |
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| CAS DataBase Reference | 1344-43-0(CAS DataBase Reference) |
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| EPA Substance Registry System | Manganese oxide (MnO) (1344-43-0) |
Description and Uses
The main use of manganese dioxide is in dry-cell batteries, such as the alkaline battery and the zinc-carbon battery. It is useful as a pigment, and as a precursor to other manganese compounds. It is used as a reagent in organic synthesis, for instance, for the oxidation of allylic alcohols and arylmethyl alcohols. It is also employed in various industrial purposes such as adhesives and sealant chemicals, lubricants and lubricant additives, fertilizers, oxidizing/reducing agents, plating agents and surface treating agents, processing aids, air care products, paints and coatings.
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H312-H315-H319-H335 |
| Precautionary statements | P261-P280-P304+P340-P305+P351+P338-P405-P501a |
| Hazard Codes | Xn |
| Risk Statements | 21-36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 3 |
| RTECS | OP0900000 |
| TSCA | Yes |
| Hazardous Substances Data | 1344-43-0(Hazardous Substances Data) |
