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이산화 망간

이산화 망간
이산화 망간 구조식 이미지
카스 번호:
1313-13-9
한글명:
이산화 망간
동의어(한글):
망간(IV)옥사이드;이산화망간;이산화망간;망가니즈다이옥사이드
상품명:
Manganese dioxide
동의어(영문):
MnO2;Mangoxe;c.i.77728;PYROLUSITE;Braunstein;Bruinsteen;C.I. 77728;cementblack;bogmanganese;Cement black
CBNumber:
CB4139599
분자식:
MnO2
포뮬러 무게:
86.94
MOL 파일:
1313-13-9.mol

이산화 망간 속성

녹는점
535 °C (dec.)(lit.)
밀도
5.02
저장 조건
Store at +5°C to +30°C.
용해도
<0.001g/l insoluble
물리적 상태
powder
색상
gray
Specific Gravity
5.026
수용성
insoluble
Merck
14,5730
안정성
Stable. Incompatible with strong acids, strong reducing agents, organic materials.
InChIKey
NUJOXMJBOLGQSY-UHFFFAOYSA-N
CAS 데이터베이스
1313-13-9(CAS DataBase Reference)
NIST
manganese(IV) dioxide(1313-13-9)
EPA
Manganese oxide (MnO2)(1313-13-9)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xn
위험 카페고리 넘버 20/22
안전지침서 25
유엔번호(UN No.) 3137
WGK 독일 1
RTECS 번호 OP0350000
TSCA Yes
HS 번호 2820 10 00
포장분류 III
독성 LD50 orally in rats: >40 mmole/kg (Holbrook)
그림문자(GHS):
신호 어: Warning
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H302 삼키면 유해함 급성 독성 물질 - 경구 구분 4 경고 P264, P270, P301+P312, P330, P501
H332 흡입하면 유해함 급성 독성 물질 흡입 구분 4 경고 P261, P271, P304+P340, P312
예방조치문구:
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
P264 취급 후에는 손을 철저히 씻으시오.
P264 취급 후에는 손을 철저히 씻으시오.
P270 이 제품을 사용할 때에는 먹거나, 마시거나 흡연하지 마시오.
P304+P340 흡입하면 신선한 공기가 있는 곳으로 옮기고 호흡하기 쉬운 자세로 안정을 취하시오.

이산화 망간 C화학적 특성, 용도, 생산

물성

고체, 색상: 검은색, 냄새 : 무취, 녹는점/어는점 : > 723 K, 인화성(고체, 기체) : 불연성, 용해도 : <0.1 ㎎/ℓ (불용성), 비중 : 5.21 (21 °C), 분해온도 : 535 ℃, 분자량 : 86.9

용도

공업용 용도로는 산소 · 염소 · 브롬의 제조, 유리 · 도자기 수지용 흑색 안료, 망간계 공업약품 원료, 일반 도자기 유약, 도료용 원료, 비료 원료, 용접 재료, 건전지 원료 등의 착색 등에 사용된다.
시약용 용도로는 화학적 방법에 의한 물질의 검출이나 정량을 위한 실험연구용으로 사용된다.

화학적 성질

Iron-black to dark steel-gray or bluish mineral; black or bluish-black streak; metallic or dull luster. Sol- uble in hydrochloric acid.

화학적 성질

Manganese dioxide is a black crystalline solid or powder.

물리적 성질

Black tetragonal crystals; density 5.08 g/cm3; Moh’s hardness 6.3; decomposes at 535°C; insoluble in water.

용도

Manganese(IV) oxide is the most important ore of manganese from which the metal is mostly manufactured. The oxide occurs in nature as the mineral pyrolusite as heavy gray lumps, or black when powdered.
The mineral is used to produce manganese metal, most manganese salts, and also manganese steel and other alloys. The metallurgical applications of manganese(IV) oxide mainly involve making ferromanganese and special manganese alloys. Another important application of manganese(IV) oxide is in manufacturing dry-cell batteries and alkaline cells. The oxide also is a colorant in brick, tile, porcelain and glass; a drier for paints and varnishes; a 552 MANGANESE(IV) OXIDEpreparation for printing and dyeing textiles; a curing agent for polysulfide rubbers; an adsorbent for hydrogen sulfide and sulfur dioxide; an oxidizing agent in many organic syntheses such as quinone and hydroquinone; and a catalyst in laboratory preparation of oxygen from potassium chlorate. Manganese(IV) oxide also is used to make welding rods and fluxes, and ceramic magnets (ferrites); and is an additive to fertilizers.

용도

The mineral is the source of manganese and all its Compounds; largely used in manufacture of manganese steel; oxidizer; in alkaline batteries (dry cells); for making amethyst glass, decolorizing glass; painting on porcelain, faience and majolica. The ppt is used in electrotechnics, pigments, browning gun barrels, drier for paints and varnishes, printing and dyeing textiles.

용도

The chemistry of manganese(III) is not extensive, and in the higher oxidation states manganese dioxide and potassium permanganate are the most important compounds.
Manganese dioxide is also used in the manufacture of glass to bleach the colour of any iron present. If excess manganese dioxide is added, a pink coloration can be produced in the glass and if a large excess is present it will appear black.
Other uses of manganese dioxide include its use as an oxidizing agent in organic chemistry and as an oxidizing agent in safety matches, fireworks and flares. It is also an effective adsorbent for hydrogen sulphide and is also used to colour ceramics.

제조 방법

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.

반응 프로필

The stability of manganese dioxide is due primarily to its insolubility. It is, however, readily attacked by reducing agents in acid solution, for example oxidizing concentrated hydrochloric acid to chlorine. In hot concentrated alkali it dissolves to give a purple solution which contains an equimolar mixture of trivalent manganese, probably as (Mn(OH)6)3- and manganate(V), (MnO4)3-. Manganese dioxide is also one of the most active catalysts for the oxidation of carbon monoxide near room temperature.

위험도

Oxidizing agent, may ignite organic materials.

공업 용도

Manganese dioxide (MnO2) is soluble in water and HNO3 and soluble in HCl. It occurs in nature as the blue-black mineral pyrolusite. In glass, manganese dioxide is used as a colorant and decolorizer.
The major use of manganese oxides is an ore of manganese for the manufacturing of steel; manganese serves to increase the hardness and decrease the brittleness of steel. Another important use of manganese oxides is as the cathode material of common zinc/carbon and alkaline batteries (such as flashlight batteries).

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 oxilzable 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℃). Vigorous reaction with hydroxylaminium chloride. Incompatible with H202, H2SO j, Naz02. Keep away from heat and flammable materials. See also MANGANESE COMPOUNDS.

잠재적 노출

Manganese dioxide is used as depolarizer for dry cell batteries, for production of manganese metal; as an oxidizing agent; laboratory reagent; and in making pyrotechnics and matches; in dry cell batteries.

운송 방법

UN1479 Oxidizing solid, n.o.s., Hazard Class: 5.1; Labels: 5.1-Oxidizer, Technical Name Required. UN3137 (powder) Oxidizing solid, flammable, Hazard Class: 5.1; Labels: 5.1-Oxidizer, 4.1 Flammable solid, Technical Name Required.

비 호환성

A powerful oxidizer. Incompatible with strong acids; reducing agents; combustible materials (such as fuel and clothing; organic materials. Mixtures with calcium hydride is a heat- and friction-sensitive explosive. Vigorous reaction with hydrogen sulfide, diboron tetrafluoride; calcium hydride; chlorine trifluoride; hydrogen peroxide; hydroxyaluminum chloride; anilinium perchlorate. Decomposes when heated above 553C producing manganese(III)oxide and oxygen, which increases fire hazard. Reacts violently with aluminum (thermite reaction), potassium azide; rubidium acetylide; in the presence of hea

폐기물 처리

Generators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste number N450, must conform to USEPA regulations for storage, transportation, treatment, and disposal of waste. Dispose of waste material as hazardous waste using a licensed disposal contractor to an approved landfill. Dispose of contents and container to an approved waste disposal plant. Containers must be disposed of properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office. All federal, state, and local environmental regulations must be observed. Do not discharge into drains or sewers

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