Overview of Manganese Dioxide MnO2:
Manganese dioxide MnO2 is black amorphous powder or black diamond crystals.Solubility: hardly soluble in water,weak acid,weak base,nitric acid,cold sulfuric acid,insoluble in concentrated hydrochloric acid when heated,generating chlorine gas.
Chemical properties: Manganese dioxide is an amphoteric oxide.There are corresponding salts in the form of perovskite structures,such as BaMnO3 or SrMnO3 (obtained by compound reaction in a molten alkali system).There is also manganese tetrachloride.
When encountering reducing agents,it shows oxidizing properties.If manganese dioxide is placed in a hydrogen stream and heated to 1400K to obtain manganese oxide; manganese dioxide is heated in an ammonia stream to obtain brown-black manganese trioxide. Manganese dioxide reacts with concentrated hydrochloric acid to produce chloride,manganese chloride, chlorine and water.
When encountering strong oxidants,it also shows reducibility.It is a strong oxidant in acidic medium.
Application of Manganese Dioxide MnO2:
What are the uses of manganese dioxide MnO2?
Manganese dioxide MnO2 is mainly used as a depolarizer for dry batteries, as a catalyst and oxidant in the synthesis industry, and as a colorant, decolorizer, and iron removal agent in the glass industry and enamel industry. Used in the manufacture of metal manganese, special alloys, manganese iron castings, gas masks and electronic material ferrites.In addition, manganese dioxide can also be used in the rubber industry to increase the viscosity of rubber.It can also be used as a catalyst in chemical experiments.
Organic synthesis use: Manganese dioxide is very useful in organic chemistry. The manganese dioxide used in oxides has different forms.Because manganese dioxide has multiple crystal forms,the chemical formula can be written as MnO₂-x(H₂O)n,where x is between 0 and 0.5,and n can be greater than 0.Manganese dioxide can be produced in the reaction of potassium permanganate (KMnO₄) and manganese sulfate (MnSO₄) at different pH. The brown manganese dioxide precipitate is very dry and very active.The most effective organic solvents include aromatic substances, carbon tetrachloride, ether, tetrahydrofuran and esters.
One of the chemical reactions dedicated to manganese dioxide is to convert alcohols into aldehydes. Even if the alcohol has a double bond, it will not be oxidized by manganese dioxide: cis-RCH=CHCH2OH + MnO2 → cis-RCH=CHCHO + H2O + MnO
The product in it will not be oxidized no matter how active it is. Diols can be oxidized by manganese dioxide to dialdehydes. Other manganese dioxide has many reactions and can be used to oxidize amines, aromatics and triols.
To Laboratory use
Used as a catalyst for the decomposition of hydrogen peroxide (hydrogen peroxide) to produce oxygen.Used as a catalyst when heating potassium chlorate to decompose to produce oxygen.The aluminothermic reaction with elemental aluminum powder produces manganese.Used as pigments, yellow glass, etc. React with hot concentrated hydrochloric acid to produce chlorine.It reacts with molten caustic potassium (potassium hydroxide) in the air to prepare potassium manganate.
In the decomposition reaction of potassium permanganate, manganese dioxide acts as a self-catalyst for potassium permanganate.
Manganese dioxide MnO2 price:
The price of manganese dioxide MnO2 products will vary randomly with the production cost of manganese dioxide MnO2, transportation cost, international situation, exchange rate and the supply and demand of manganese dioxide MnO2 market. Tanki New Materials Co.,Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for manganese dioxide MnO2 products, please feel free to send an inquiry to get the latest price of manganese dioxide MnO2 products
Suppliers of Manganese Dioxide MnO2:
As a global supplier of manganese dioxide MnO2,Tanki New Materials Co. ,Ltd has extensive experience in the performance,application and cost-effective manufacturing of advanced and engineered materials.The company has successfully developed a series of powder materials (including carbonization Boron,aluminum carbide,titanium carbide,etc.),high-purity targets,functional ceramics and structural devices,and provide OEM services.
Manganese Dioxide Properties | |
Other Names | manganese oxide, MnO2 powder |
CAS No. | 1313-13-9 |
Compound Formula | MnO2 |
Molecular Weight | 86.94 |
Appearance | Black Powder |
Melting Point | 535 ℃ |
Boiling Point | N/A |
Density | 5.03 g/cm3 |
Solubility in H2O | Insoluble |
Exact Mass | 86.9279 |
Manganese Dioxide Health & Safety Information | |
Signal Word | Warning |
Hazard Statements | H302 + H332 |
Hazard Codes | Xn, O |
Risk Codes | N/A |
Safety Statements | N/A |
Transport Information | NONH |
Manganese Dioxide Composition
MnO2 | H2O | Fe | Cu | Pb | Ni | Co | Hg | Acid insoluble | sulfate |
92.33% | 2.17% | 65ppm | 0.5ppm | 0.5ppm | 2.0ppm | 2.0ppm | 47ppm | 0.01% | 1.2% |
Tanki New Materials Co.Ltd Aims to help All industries and Chemical Wholesalers to find high quality, cheap price nano materials and chemicals by providing turn-key customize manufacturing services.
As a trust-worthy
global nano-materials and chemicals manufacturer, Tanki New Materials Co.Ltd has been successfully supplying big and small brands with customized nano materials and chemical products in bulk or small quantities.
Tanki New
Materials Co.Ltd has rich experiences in the properties, applications, and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (including oxides, carbides,
nitrides, single metal, etc.), high-purity targets, functional ceramics, and structural devices. OEM service is available.
Our innovative, high-performance materials are widely used in many industries, including but not limited
to the automotive, electrical, electronics, information technology, petrochemical, oil, ceramics, paint, metallurgy, solar energy, and catalysis.
Based in the center of China, the company has rich resources and chemical product
manufacuturing chains to make sure your cost remain as low as your specifications demand.
The company provides following products such as providing super high quality chemicals and Nano materials such as graphite powder,
boron powder , zinc sulfide , nitride powder, Calcium nitride, Ca3N2, 3D printing powder, and so on.
Ask a quote for the latest price and one of our team members will respond as soon as possible. Fields marked with * are required.