Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Basic Information
Product Name: Manganese dioxide
CAS Number: 1313-13-9
Alias: Manganese(IV) oxide, Pyrolusite
Molecular Formula: MnO2
Molecular Weight: 86.94
IUPAC Name: Manganese dioxide
Structural Information
- Structure Type: Inorganic metal oxide, transition metal tetravalent oxide
- Structural Features: Main crystal forms α-MnO2, β-MnO2, γ-MnO2; manganese atom bonded to two oxygen atoms, strong oxidizing property, semiconductor conductivity
Physical & Chemical Properties
- Appearance: Black or dark gray solid powder
- Odor: Odorless
- Melting Point: Decomposes at 530 °C to Mn3O4 and oxygen
- Density: 5.03 g/cm3
- Solubility: Insoluble in water, dilute acid, organic solvents; reacts with concentrated hydrochloric acid under heating to release chlorine
- Stability: Stable in air at room temperature; strong oxidant, reacts violently with combustible materials, reducing agents, organic substances under heating; decomposes at high temperature to release oxygen
Synthesis & Applications
Production Method
- Natural mining: Purification of pyrolusite ore
- Chemical synthesis: Oxidation of manganese sulfate solution by oxidants, calcination and crushing
Main Applications
- Battery raw material: Cathode active material for dry alkaline batteries, lithium manganese oxide battery precursor
- Industrial oxidant: Catalyst for chemical synthesis, glass decolorizer, ceramic coloring agent
- Water treatment: Adsorbent and oxidant for heavy metal ion removal
- Fine chemical auxiliary: Raw material for manufacturing potassium permanganate
Safety & Storage Instructions
GHS Hazard Classification
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- May intensify fire; oxidizer
Personal Protection
Dust mask, chemical goggles, nitrile gloves; operate in ventilated workshop, avoid dust inhalation
Storage Condition
Hermetically sealed container, cool dry warehouse; separate from combustibles, reducing agents, organic solvents
Transportation
Oxidizing solid general industrial chemical; avoid mixing with flammable goods, prevent package breakage and dust leakage
Quality Specifications
- MnO2 content: ≥91.0%
- Moisture: ≤0.5%
- Heavy metal impurities: ≤0.01%
Information Summary Table
| Item | Specification |
| CAS Number | 1313-13-9 |
| Product Name | Manganese dioxide |
| Synonym | Manganese(IV) oxide, Pyrolusite |
| Molecular Formula | MnO2 |
| Molecular Weight | 86.94 |
| Appearance | Black dark gray powder |
| Melting Point | Decompose at 530℃ |
| Solubility | Insoluble in water and common solvents |
| Purity Standard | MnO2 ≥91.0% |
| Storage Condition | Sealed cool dry storage, isolated from combustibles/reductants |
| Hazard Property | Oxidizer, dust irritates skin, eyes and respiratory tract |
| Main Usage | Dry battery cathode material, chemical catalyst, glass decolorant, raw material for potassium permanganate |
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