
Maltose 100gm (lab grade)
KSh2,500.00

Manganese Sulphate 500gm
KSh2,500.00 Original price was: KSh2,500.00.KSh2,300.00Current price is: KSh2,300.00.
Manganese Dioxide 500gm
KSh2,500.00 Original price was: KSh2,500.00.KSh2,300.00Current price is: KSh2,300.00.
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Manganese dioxide (MnO₂) is an inorganic compound that appears as a black or brown solid. It’s a versatile material with a range of applications in various industries. Here are some key points about manganese dioxide:
Chemical and Physical Properties:
- Chemical Formula: MnO₂
- Molar Mass: 86.94 g/mol
- Appearance: Black or brown powder
- Density: 5.03 g/cm³
- Melting Point: Decomposes at 535 °C (not a true melting point)
SKU:
ACS48664CHEM0
Category: Analytical Reagents
Description
Table of Contents
ToggleUses of Manganese Dioxide
1. Oxidizing Agent:
- Organic Chemistry: MnO₂ is commonly used to oxidize alcohols to aldehydes and ketones. For instance, it can selectively oxidize allylic and benzylic alcohols to the corresponding aldehydes.
- Inorganic Reactions: It serves as an oxidizing agent in various inorganic reactions, such as the oxidation of hydrochloric acid to chlorine gas.
2. Catalyst:
- Decomposition of Hydrogen Peroxide: MnO₂ catalyzes the decomposition of hydrogen peroxide (H₂O₂) into water and oxygen, a reaction often demonstrated in educational settings. 2H2O2→2H2O+O22H_2O_2 rightarrow 2H_2O + O_22H2O2→2H2O+O2
- Synthesis Reactions: It is used as a catalyst in the synthesis of other chemicals, facilitating various redox reactions.
3. Preparation of Oxygen:
- Chemical Reactions: MnO₂ is used to generate oxygen gas in the laboratory by heating it with potassium chlorate (KClO₃): 2KClO3→MnO22KCl+3O22KClO_3 xrightarrow{MnO_2} 2KCl + 3O_22KClO3MnO22KCl+3O2 In this reaction, MnO₂ acts as a catalyst, lowering the decomposition temperature of potassium chlorate.
4. Analytical Chemistry:
- Titration Reactions: It can be used in titration reactions involving redox processes, particularly in the analysis of substances that can be oxidized or reduced.
5. Laboratory Demonstrations:
- Catalytic Activity: Demonstrations often include showing MnO₂’s role in accelerating the decomposition of hydrogen peroxide or its use in producing oxygen gas from potassium chlorate.
6. Synthesis of Other Chemicals:
- Potassium Permanganate: MnO₂ is used in the preparation of potassium permanganate (KMnO₄), a strong oxidizing agent used in various laboratory procedures.
Additional information
Weight | 500 kg |
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