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1313-13-9

Basic Information
CAS No.: 1313-13-9
Name: Manganese dioxide
Article Data: 932
Molecular Structure:
Molecular Structure of 1313-13-9 (Manganese dioxide)
Formula: MnO2
Molecular Weight: 86.9368
Synonyms: EP Type II;CMD 100;Cellmax CMD-U;G 80-325;FMH;Electrolytic manganese dioxide;Manganese (IV) oxide;Manganese dioxide electrolytic;Manganese (IV) oxide, activated, oxidizing agent;Manganese Dioixde,Electrolytic;ManCanses(Ⅳ)oxide;
EINECS: 215-202-6
Density: 5.02 g/cm3
Melting Point: 535 °C (dec.)(lit.)
Flash Point: 535oC
Solubility: insoluble in water
Appearance: black powder
Hazard Symbols: HarmfulXn
Risk Codes: 20/22
Safety: 25
PSA: 34.14000
LogP: -0.23760
Synthetic route

manganese(II) nitrate

1313-13-9

manganese(IV) oxide

Conditions
ConditionsYield
at 430℃; for 4h;95.5%
In neat (no solvent) Kinetics; byproducts: nitrous gases; investigation of thermal decompn. at 163-196 °C;;
With chlorine In water Irradiation (UV/VIS);
172332-99-9

manganese(II) nitrate

1313-13-9

manganese(IV) oxide

Conditions
ConditionsYield
at 430℃; for 4h;95.5%

manganese(II) perchlorate

A

1313-13-9

manganese(IV) oxide

B

manganese(ll) chloride

Conditions
ConditionsYield
In neat (no solvent, solid phase) byproducts: Cl2, O2; thermal decompn., 190-240°C;A 95%
B 5%

manganese(II)

1313-13-9

manganese(IV) oxide

Conditions
ConditionsYield
With fluorine In nitric acid oxidn. of weakly H2SO4-acidic ice-cooled Mn(II)-salt-soln. with F2;;91.5%
With hypochloric acid In not given
With bromine In ammonia oxidn. of ammoniacal Mn(II)-salt-soln. at 50 °C with Br2;;

Mn(N,N'-bis(salicylaldehyde)meso-2,3-butanediimine)

A

1313-13-9

manganese(IV) oxide

B

Mn(N,N'-bis(salicylaldehyde)meso-2,3-butanediimine)OH

Conditions
ConditionsYield
With O2 In pyridine 1 atm O2, refluxing for 10 h (pptn.); collection (filtration); second crop and MnO2 on evapn. of filtrate; elem. anal.;A 7%
B 90%
64593-36-8

Mn(N,N'-bis(salicylaldehyde)-1,1,2,2-tetramethylethylenediimine)

A

1313-13-9

manganese(IV) oxide

B

Mn(N,N'-bis(salicylaldehyde)-1,1,2,2-tetramethylethylenediimine)OH

Conditions
ConditionsYield
With O2 In pyridine 1 atm O2, refluxing for 10 h (pptn.); collection (filtration); second crop and MnO2 on evapn. of filtrate; elem. anal.;A 10%
B 90%

2,2′-((1E,1′E)-(ethane-1,2-diylbis(azanylylidene))bis(methanylylidene))diphenolmanganese(II)

A

1313-13-9

manganese(IV) oxide

B

Mn(N,N'-bis(salicylaldehyde)ethylenediimine)OH

Conditions
ConditionsYield
With O2 In pyridine 1 atm O2, refluxing for 10 h (pptn.); collection (filtration); second crop and MnO2 on evapn. of filtrate; elem. anal.;A 9%
B 90%

Mn(N,N'-bis(salicylaldehyde)meso-1,2-diphenylethylenediimine)

A

1313-13-9

manganese(IV) oxide

B

Mn(N,N'-bis(salicylaldehyde)meso-1,2-diphenylethylenediimine)OH

Conditions
ConditionsYield
With O2 In pyridine 1 atm O2, refluxing for 10 h (pptn.); collection (filtration); second crop and MnO2 on evapn. of filtrate; elem. anal.;A 9%
B 89%
58770-12-0

Mn(N,N'-bis(salicylaldehyde)-1,3-propanediimine) * H2O

A

1313-13-9

manganese(IV) oxide

B

Mn(N,N'-bis(salicylaldehyde)-1,3-propanediimine)OH

Conditions
ConditionsYield
With O2 In pyridine 1 atm O2, refluxing for 10 h (pptn.); collection (filtration); second crop and MnO2 on evapn. of filtrate; elem. anal.;A 9%
B 88%

Mn(N,N'-bis(salicylaldehyde)trans-1,2-diphenylethylenediimine)

A

1313-13-9

manganese(IV) oxide

Mn(N,N'-bis(salicylaldehyde)trans-1,2-diphenylethylenediimine)OH

Conditions
ConditionsYield
With O2 In pyridine 1 atm O2, refluxing for 10 h (pptn.); collection (filtration); second crop and MnO2 on evapn. of filtrate; elem. anal.;A 10%
B 87%
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Chemistry


IUPAC Name: Dioxomanganese 
Empirical Formula: MnO2
Molecular Weight: 86.9368
Canonical SMILES: O=[Mn]=O
InChI: InChI=1S/Mn.2O
InChIKey: NUJOXMJBOLGQSY-UHFFFAOYSA-N
EINECS: 215-202-6
Product Categories: Inorganics 
Water Solubility: insoluble 
Stability: Stable. Incompatible with strong acids, strong reducing agents, organic materials. 
Density: 5.026 g/cm3
Flash point: 535 °C 
Appearance: black powder
Melting Point: 535 °C (dec.)(lit.)
Classification Code of Manganese dioxide (CAS NO.1313-13-9): Reproductive Effect

History

The chemical properties of Manganese dioxide have been well examined since relatively pure materials have long been readily found or prepared. The manganese dioxide was subsequently recovered by the Weldon process.In molten KOH in the presence of oxygen, MnO2 reacts to give the manganate anion, as discussed below under Applications.

Uses

One of Manganese dioxide (CAS NO.1313-13-9) first uses was in glass making. In modern times, the predominant application of Manganese dioxide is as a component of dry cell batteries. A specialized use of manganese dioxide is as an oxidant in organic synthesis. The principal use for MnO2 is for dry-cell batteries, such as the alkaline battery and the zinc-carbon battery. MnO2 is also used for production of MnO4. It is used extensively as an oxidizing agent in organic synthesis, for example, for the oxidation of allylic alcohols.

Production

The natural occuring Manganese dioxide contains impurities and a considerable amount of manganese(III) ions. The production of synthetic manganese dioxide is important. Two groups of methods are used, yielding chemical manganese dioxide (CMD) and electrolytical manganese dioxide (EMD). The CMD is mostly used for the production of ferrites, while the EMD is used for the production of batteries.

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 subcutaneous 422mg/kg (422mg/kg)   Zhurnal Vsesoyuznogo Khimicheskogo Obshchestva im. D.I. Mendeleeva. Journal of the D.I. Mendeleeva All-Union Chemical Society. Vol. 19, Pg. 186, 1974.
rabbit LDLo intravenous 45mg/kg (45mg/kg)   "Merck Index; an Encyclopedia of Chemicals, Drugs, and Biologicals", 11th ed., Rahway, NJ 07065, Merck & Co., Inc. 1989Vol. 11, Pg. 899, 1989.
rat LD50 oral > 3478mg/kg (3478mg/kg)   EHP, Environmental Health Perspectives. Vol. 10, Pg. 95, 1975.
rat LDLo intratracheal 50mg/kg (50mg/kg) LUNGS, THORAX, OR RESPIRATION: EMPHYSEMA

LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 20(1), Pg. 25, 1955.

Consensus Reports

 Manganese dioxide and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.

Safety Profile

Poison by intravenous and intratracheal routes. Moderately toxic by subcutaneous route. Experimental reproductive effects. A powerful oxidizer. Flammable by chemical reaction. It must not be heated or rubbed in contact with easily oxidizable matter. Violent thermite reaction when heated with aluminum. Potentially explosive reaction with hydrogen peroxide, peroxomonosulfuric acid, chlorates + heat, anilinium perchlorate. Ignition on contact with hydrogen sulfide. Violent reaction with oxidizers, potassium azide (when warmed), diboron tetrafluoride, Incandescent reaction with calcium hydride, chlorine trifluoride, rubidium acetylide (at 350°C). Vigorous reaction with hydroxylaminium chloride. Incompatible with H2O2, H2SO5, Na2O2. Keep away from heat and flammable materials.
Hazard Codes: HarmfulXn
Risk Statements: 20/22 
R20/22:Harmful by inhalation and if swallowed.
Safety Statements: 25 
S25:Avoid contact with eyes.
RIDADR: 3137
WGK Germany: 1
RTECS: OP0350000
PackingGroup: III

Standards and Recommendations

OSHA PEL: CL 5 mg(Mn)/m3
ACGIH TLV: TWA 0.03 mg(Mn)/m3

Specification

 Manganese dioxide (CAS NO.1313-13-9), its Synonyms are Manganese peroxide ; Manganese superoxide ; Manganese(IV) oxide ; Manganese dioxide, ore of Chapter 26 ; Manganese oxide (MnO2) ; BOG manganese ; Black manganese oxide ; Braunstein ; Manganese (diossido di) ; Manganese (dioxyde de) .