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化工社化工社 化学情報印刷レポート · 研究参考用
HCID 14801作成日:2026年10月27日

二酸化マンガン

二酸化マンガン · 二酸化マンガン(粉末) · 二酸化マンガン(活性) · 二酸化マンガン(粒状) · 酸化マンガン(IV)(粉末) · 酸化マンガン(IV)(活性) · 酸化マンガン(IV)(粒状) · 酸化マンガン()

https://huagongshe.com/ja/chemical/14801

二酸化マンガン の分子構造式

識別子と物理属性

CAS No.1313-13-9
分子式MnO2
平均分子量86.937 g/mol
単同位体質量86.92787434 g/mol
SMILES[O]=[Mn]=[O]
InChIKeyNUJOXMJBOLGQSY-UHFFFAOYSA-N
PubChem CID14801
ChEBICHEBI:136511
EC No.215-202-6
DTXSIDDTXSID501314019
現地名二酸化マンガン

化学・物理的性質

極性表面積34.1
水素結合供与体数0
水素結合受容体数2
回転可能結合数0
重原子数3
形式電荷0
複雑度18.3
物質分類Metals -> Manganese Compounds, Inorganic
SpringerMaterials Propertiesdielectric constant
密度5.0 g/cm³5.08 @25 °C5.02
溶解度Solubility in water: none<0.001g/l 不溶不溶性
Decomposition535 °C
Physical DescriptionDry PowderLarge CrystalsCBIOther SolidWet SolidNatural form is steel-gray when in lumps and black when powderedThe artificial precipitate in a brownish-black solidBoth usually have some manganese oxide and water[Merck Index] Brown odorless powder[Alfa Aesar MSDS]BLACK-TO-BROWN POWDER.
融点535 °C (dec.) (lit.)
蒸気圧0-0Pa at 25℃
貯蔵条件Store below +30°C.
外観・状態粉
色グレー
比重5.026
比熱容量Cp(crystal): 0.62 J/(g·K), at 25℃
晶系正方
Merck14,5730
空间群P42/mnm
晶格常数a/nmb/nmc/nmα/oβ/oγ/oV/nm30.43980.43980.28739090900.0556
安定性安定。強酸、強力な還元剤、有機物とは相容れない。
化粧品成分の機能抗酸化物質
InChI1S/Mn.2O
InChIKeyNUJOXMJBOLGQSY-UHFFFAOYSA-N
SMILESO=[Mn]=O
CAS データベース1313-13-9(CAS DataBase Reference)
NISTの化学物質情報manganese(IV) dioxide(1313-13-9)
EPAの化学物質情報Manganese dioxide (1313-13-9)

化学的特性

二酸化マンガンは化学式でMnO2と表される化合物です自然界に広く存在し黒色または暗褐色の固体として見られることが多いです二酸化マンガンは電池の正極材料着色剤触媒としての用途がありますこの物質は特に乾電池やリチウム電池の製造において重要な役割を果たしています

化学的特性

Manganese dioxide is a black crystalline solid or powder.

安全性と法規制

GHS 分類WarningH302: Harmful if swallowed [Warning Acute toxicity, oral]P261, P264, P270, P271, P301+P317, P304+P340, P317, P330, and P501 (click each P-code to see the statement)This chemical does not meet GHS hazard criteria for 0.8% (11 of 1416) of reports.H302+H332 (12.5%): Harmful if swallowed or if inhaled [Warning Acute toxicity, oralacute toxicity, inhalation]
規制情報Chemical: Manganese oxide (MnO2)Manganese oxide (MnO2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Manganese oxide (MnO2) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 27-02-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15404Manganese (IV) oxide: HSNO Approval: HSR003741 Approved with controls
その他の安全情報IMAP assessments - Manganese oxides: Human health tier II assessment
火災危険Not combustible but enhances combustion of other substances.
有害性の概要Inhalation of dust may cause diseases of the lungs (bronchitis and pneumonia) and CNS (manganism)[ICSC] A strong oxidizer[Merck Index] Harmful by ingestion, inhalationMay cause irritation[Alfa Aesar MSDS] See Manganese and linked occupational diseases.
EC 分類Symbol: XnR: 20/22S: (2)-25
Chemical DangersDecomposes above 553 °C . This produces manganese(III)oxide and oxygen, which increases fire hazard. The substance is a strong oxidant. It reacts violently with combustible and reducing materials. This generates fire and explosion hazard. Reacts with aluminium on heating.
Hazard Classes and CategoriesAcute Tox. 4 (97.6%)Not ClassifiedSpecific target organ toxicity (repeated exposure) - category 1Specific target organ toxicity - Single exposure - Category 1 (respiratory system)

用途

解説

二酸化マンガン,にさんかまんがん.酸化マンガン(Ⅳ)ともいう.灰色~灰黒色の粉末.天然にはパイロルース鉱として産出する.実験室では,硝酸マンガン(Ⅱ)を空気中で約530 ℃ に加熱分解酸化してつくる.過マンガン酸アルカリを塩基性水溶液中で還元すると水和酸化物の形で生成する.正方晶系,ルチル型構造.密度5.03 g cm-3.比電気伝導率0.16 Ω-1 cm-1(0 ℃).水に不溶.空気中で安定であるが,加熱すると酸素を放って分解する.酸化作用が強く,濃塩酸に溶けて塩素を発する(塩素の製法).また,過酸化水素の酸性水溶液から酸素を発生して MnⅡとなる.過酸化水素水の分解,塩素酸カリウムの熱分解の触媒,金属マンガンおよびマンガン塩の原料,マンガン鋼,乾電池,マッチ,塗料,うわぐすり,ガラスの着色剤,媒染剤などに用いられる.

用途

有機合成用(酸化剤)、乾電池材料、マンガン化合物製造原料。

用途

水の除鉄、脱硝触媒。

用途

酸素発生用、酸化剤、マンガン化合物製造原料。

用途

高純度金属酸化物、触媒。

用途

かなりの導電性がある。アルカリ性でマンガン(Ⅱ)化合物の酸化またはマンガン(Ⅶ)化合物の還元により、水和物MnO2・2H2Oが沈殿する。酸化剤となる。γ型が乾電池の減極剤に用いられる。マッチ、花火の材料となり、ガラスの青色を消すのに、また乾性油の製造などに用いる。実験室で酸素発生の触媒、有機化学の分野でアルコールの酸化などに用いる。

使用

As an oxidizing agent, source of metallic manganese, decolorizing glass, painting porcelain, as an analytical reagentManganese(IV) oxide is used as an oxidizing agent in organic synthesis such as oxidation of allylic/benzylic alcohols, as a textile dye, as a reducing agent, and as a component of dry cell batteries such as zinc-carbon battery and alkaline battery. It is also used in making pigments for glasses and ceramics, and drier for paints. Further it is used in the manufacture of manganese steel and several manganese derivatives including potassium permanganate, a powerful versatile oxidant. Catalytic hydration of nitriles to amides by flowing through manganese dioxide has been reported. Manganese dioxide supported on inorganic oxide can be used for oxidation of methylamine through CWAO (Catalytic Wet Air Oxidation). It has high potential as highly efficient and robust material for water oxidation reaction (WORs).

一般的な説明

Manganese(IV) oxide (MnO2) is an eco-friendly chemical having a high theoretical specific capacitance.

製法・合成法

製造方法

Pure manganese(IV) oxide (precipitate form) may be prepared by reducing permanganate ion with a manganous salt: 2KMnO4 + 3MnSO4 + 2H2O → 5MnO2 + K2SO4 + 2H2SO4 Manganese(IV) oxide can also be precipitated by oxidation of a manganese(II) salt using an oxidizing agent such as hypochlorite or peroxydisulphate: Mn2+ + S2O82– + 2H2O → MnO2 + 2SO42– + 4H+ Manganese(IV) oxide may also be made by thermal decomposition of manganese(II) nitrate; or from roasting manganese(II) carbonate in air: Mn(NO3)2 → MnO2 + 2NO2 MnCO3 + ½ O2 → MnO2 + CO2 A highly active gamma-MnO2 can be produced by treating manganese(III) oxide with hot sulfuric acid: Mn2O3 + H2SO4 → MnO2 + MnSO4 + H2O Mn2O3 is derived from pyrolusite by heating the mineral at 600–800°C or reducing with powdered coal at 300°C.

Acute Tox. 4 *
消火In case of fire in the surroundings, use appropriate extinguishing media.
応急処置措置Fresh air, rest. Refer for medical attention.Rinse and then wash skin with water and soap.First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.Rinse mouth. Refer for medical attention .
安全保管Separated from combustible substances and reducing agents.
暴露管理・個人防護0.2 [mg/m3], as Mn (inhalable fraction), 0.02 mg/m3, as Mn (respirable fraction)[German Research Foundation (DFG)]
漏出処分Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Do NOT absorb in saw-dust or other combustible absorbents. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting.
Eye PreventionWear safety goggles or eye protection in combination with breathing protection if powder.
Fire PreventionNO contact with combustible substances.
Inhalation RiskEvaporation at 20 °C is negligiblea harmful concentration of airborne particles can, however, be reached quickly when dispersed.
Skin PreventionProtective gloves.
Minimum Risk LevelChronic Inhalation: 0.0003 mg/m3 (L134)
Exposure PreventionPREVENT DISPERSION OF DUST! AVOID EXPOSURE OF (PREGNANT) WOMEN!
Ingestion PreventionDo not eat, drink, or smoke during work.
TreatmentEYES: irrigate opened eyes for several minutes under running water. INGESTION: do not induce vomiting. Rinse mouth with water (never give anything by mouth to an unconscious person). Seek immediate medical advice. SKIN: should be treated immediately by rinsing the affected parts in cold running water for at least 15 minutes, followed by thorough washing with soap and water. If necessary, the person should shower and change contaminated clothing and shoes, and then must seek medical attention. INHALATION: supply fresh air. If required provide artificial respiration.
健康影響Manganese mainly affects the nervous system and may cause behavioral changes and other nervous system effects, which include movements that may become slow and clumsy. This combination of symptoms when sufficiently severe is referred to as “manganism”. (L228)
有害作用Neurotoxin - Parkinsonism
暴露経路The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.Oral (L228)inhalation (L228)
毒性の概要Manganese is a cellular toxicant that can impair transport systems, enzyme activities, and receptor functions. It primarily targets the central nervous system, particularily the globus pallidus of the basal ganglia. It is believed that the manganese ion, Mn(II), enhances the autoxidation or turnover of various intracellular catecholamines, leading to increased production of free radicals, reactive oxygen species, and other cytotoxic metabolites, along with a depletion of cellular antioxidant defense mechanisms, leading to oxidative damage and selective destruction of dopaminergic neurons. In addition to dopamine, manganese is thought to perturbations other neurotransmitters, such as GABA and glutamate. In order to produce oxidative damage, manganese must first overwhelm the antioxidant enzyme manganese superoxide dismutase. The neurotoxicity of Mn(II) has also been linked to its ability to substitute for Ca(II) under physiological conditions. It can enter mitochondria via the calcium uniporter and inhibit mitochondrial oxidative phosphorylation. It may also inhibit the efflux of Ca(II), which can result in a loss of mitochondrial membrane integrity. Mn(II) has been shown to inhibit mitochondrial aconitase activity to a significant level, altering amino acid metabolism and cellular iron homeostasis. (L228)
Signs and SymptomsCough.Abdominal pain. Nausea.Manganese mainly affects the nervous system and may cause behavioral changes and other nervous system effects, which include movements that may become slow and clumsy. This combination of symptoms when sufficiently severe is referred to as “manganism”. (L228)
ICSC Environmental DataThis substance may be hazardous to the environment. Special attention should be given to aquatic organisms.
Carcinogen ClassificationNo indication of carcinogenicity to humans (not listed by IARC).
Toxicity DataLD50: >3478 mg/kg (Oral, Rat) (L326)
水環境危害等級(WGK)1
TSCA 収載状態TSCA listed
RTECS 番号OP0350000
輸送番号(UN)3137
毒性LD50 orally in rats: >40 mmole/kg (Holbrook)
PRTR法第1種指定化学物質
税関コード2820 10 00
危険文句(R)20/22
化審法一般化学物質
安衛法特定化学物質障害予防規則:第2類物質,57,57-2
危険表示Xn
安全措置(S)25
包装等級III
危険等級Acute Tox. 4 InhalationAcute Tox. 4 OralSTOT RE 2 Inhalation
貯蔵分類13 - Non Combustible Solids