메틸에틸케톤
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메틸에틸케톤 속성
- 녹는점
- -87 °C (lit.)
- 끓는 점
- 80 °C (lit.)
- 밀도
- 0.805 g/mL at 25 °C (lit.)
- 증기 밀도
- 2.49 (vs air)
- 증기압
- 71 mm Hg ( 20 °C)
- 굴절률
- n
20/D 1.379(lit.)
- FEMA
- 2170 | 2-BUTANONE
- 인화점
- 26 °F
- 저장 조건
- 2-8°C
- 용해도
- Miscible with acetone, ethanol, benzene, ether (U.S. EPA, 1985), and many other solvents, particularly ketones and aldehydes
- 산도 계수 (pKa)
- 14.7 (quoted, Riddick et al., 1986)
- 물리적 상태
- 액체
- 색상
- 무색의
- 상대극성
- 0.327
- 냄새
- 2~85ppm(평균 = 16ppm)에서 달콤하고 날카로운 냄새 감지 가능
- 수소이온지수(pH)
- pH(1+4, 25℃):6.0~7.0
- 폭발한계
- 1.8-11.5%(V)
- Odor Threshold
- 0.44ppm
- ?? ??
- 미묘한
- 수용성
- 290g/L(20℃)
- Merck
- 14,6072
- JECFA Number
- 278
- BRN
- 741880
- Henry's Law Constant
- 23.0 at 50.00 °C, 34.1 at 60.00 °C, 50.6 at 70.00 °C, 70.4 at 80.00 °C (headspace-GC, Hovorka et al., 2002)
- 노출 한도
- TLV-TWA, PEL 590 mg/m3 (200 ppm) (ACGIH, OSHA); STEL 885 mg/m3 (300 ppm) (ACGIH); IDLH 3000 ppm (NIOSH).
- Dielectric constant
- 18.5(20℃)
- 안정성
- 안정적인. 가연성이 높습니다. 산화제, 염기, 강한 환원제와 호환되지 않습니다. 습기로부터 보호하십시오.
- LogP
- 0.3 at 40℃
- CAS 데이터베이스
- 78-93-3(CAS DataBase Reference)
- NIST
- 2-Butanone(78-93-3)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | F,Xi,T | ||
---|---|---|---|
위험 카페고리 넘버 | 11-36-66-67-39/23/24/25-23/24/25 | ||
안전지침서 | 9-16-45-36/37 | ||
유엔번호(UN No.) | UN 1193 3/PG 2 | ||
OEB | A | ||
OEL | TWA: 200 ppm (590 mg/m3), STEL: 300 ppm (885 mg/m3) | ||
WGK 독일 | 1 | ||
RTECS 번호 | EL6475000 | ||
자연 발화 온도 | 516 °C | ||
TSCA | Yes | ||
위험 등급 | 3 | ||
포장분류 | II | ||
HS 번호 | 29141200 | ||
유해 물질 데이터 | 78-93-3(Hazardous Substances Data) | ||
독성 | LD50 orally in rats: 6.86 ml/kg (Smyth) | ||
IDLA | 3,000 ppm | ||
기존화학 물질 | KE-24094 | ||
유해화학물질 필터링 | 97-1-81 | ||
사고대비 물질 필터링 | 15 | ||
함량 및 규제정보 | 물질구분: 유독물질; 혼합물(제품)함량정보: 메틸 에틸 케톤 및 이를 85% 이상 함유한 혼합물 |
메틸에틸케톤 C화학적 특성, 용도, 생산
개요
무색투명한 저비점 가연성 액체로서 Butene-2의 수화반응에 의해 생산됨. 알코올 및 에테르에 쉽게 용해되며 물에도 용해되는 성질을 가지고 있고 휘발성이 강해 그 용도가 매우 다양함.용도
특히 표면코 팅산업에 많이 사용되는데 주로 Nitro Cellulose, 페인트 및 잉크제조 등에 쓰이며 각종 수지를 만 드는 과정에 사용됨. 또한 접착제와 고무 시멘트 용제로 적합하며 윤활유 추출과 산화방지제, 합성 수지, 향수, 촉매제조의 중간물질및 마그네틱 테이프 제조시 사용됨.용도
저비점 유기 용제에서 메틸 에틸 케톤은 탁월한 용해력과 건조 특성으로 유명합니다. 그것은 주로 폴리 우레탄 수지, PU 가죽 및 모방 가죽, 본드, 코팅, 윤활유 dewaxing, 인쇄 잉크, 자기 기록 재료 등 산업에 사용되는, 그것은 또한 중요한 정밀 화학 원료입니다.개요
2-Butanone is a stable, highly flammable chemical. It is incompatible with oxidising agents, bases, and strong reducing agents. It is a colourless liquid with a sharp, sweet odour. 2-Butanone is produced in large quantities. It is used as a solvent and nearly half of its use is in paints and other coatings because it will quickly evaporate into the air and it dissolves many substances. It is also used in glues and as a cleaning agent.화학적 성질
Methyl ethyl ketone (MEK) is a colorless liquid with an odor that has been described as moderately sharp, fragrant, peppermint, or acetone like. It soluble in water up to 28% by weight and is miscible with many other organic solvents. The lower explosive limit is 1.4% and the upper explosive limit is 11.4%. Methyl ethyl ketone may be incompatible with strong oxidizers, amines, ammonia, inorganic acids, caustics, isocyanates, and pyridines. When used industrially, methyl ethyl ketone must be handled with caution, as it is a Class lB flammable liquid NIOSH (2010).물리적 성질
2-Butanone is a clear, colorless, volatile, very flammable liquid with a sweet, mint or acetone-like odor. Odor threshold concentration is 10.0 ppmv (Leonardos et al., 1969). Experimentally determined detection and recognition odor threshold concentrations were 5.8 mg/m3 (2.0 ppmv) and 16 mg/m3 (5.4 ppmv), respectively (Hellman and Small, 1974). It is incompatible with oxidizing agents, bases, and strong reducing agents. It is a colorless liquid with a sharp, sweet odor. 2-Butanone is produced in large quantities. It is used as a solvent and nearly half of its use is in paints and other coatings because it quickly evaporates into the air and it dissolves many substances. It is also used in glues and as a cleaning agent.출처
Reported found as an impurity among products from the dry distillation of wood and in the oil (extracted with ether) of black tea; it is also present in coffee, cheese, bread, some citrus oils and some other natural products (grape, raspberry).용도
2-Butanone is an eye irritant that has been used as a water soluble photoinitiator for the photopolymerization of methacrylic acid (MAA). As solvent; in the surface coating industry; manufacture of smokeless powder; colorless synthetic resins.정의
ChEBI: A dialkyl ketone that is a four-carbon ketone carrying a single keto- group at position C-2.제조 방법
By catalytic dehydrogenation of secondary butyl alcohol; by dehydration of butane-2,3-diol by refluxing with 25% aqueous H2SO4. Industrially, it is also prepared by controlled oxidation of butane, by dry distillation of calcium acetate and calcium propionate, or by refluxing methyl acetoacetate and diluted H2SO4.생산 방법
Methyl ethyl ketone is commercially manufactured from nbutene in a metal-catalyzed hydrogenation reaction that proceeds through the intermediate formation of 2-butanol . A second method of synthesis involves the liquid- phase oxidation of n-butane with the formation of acetic acid as a coproduct.일반 설명
Methyl ethyl ketone (MEK) is a colourless liquid with a sweet and sharp odour. It is soluble in alcohol, ether, acetone benzene, and water. It is a solvent often found in mixtures with acetone, ethyl acetate, n-hexane, toluene, or alcohols. It has applications in the surface coating industry and in the de-waxing of lubricating oils. MEK is used in the manufacture of colourless synthetic resins, artificial leather, rubbers, lacquers, varnishes, and glues.공기와 물의 반응
Highly flammable. Slightly soluble in water.위험도
Flammable, dangerous fire risk. Toxic by ingestion.건강위험
Occupational workers are exposed to 2-butanone by breathing contaminated air in workplaces associated with the production or use of paints, glues, coatings, or cleaning agents. Prolonged exposures to 2-butanone cause symptoms of poisoning such as cough, dizziness, drowsiness, headache, nausea, vomiting, dermatitis, irritation of the nose, throat, skin, and eyes and at very high levels cause drooping eyelids, uncoordinated muscle movements, loss of consciousness, and birth defects. Chronic inhalation studies in animals have reported slight neurological, liver, kidney, and respiratory effects. However, information on the chronic (long-term) effects of 2-butanone (methyl ethyl ketone) in humans is limited.화재위험
Flammable/combustible material. May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.인화성 및 폭발성
Methyl ethyl ketone is extremely flammable (NFPA rating = 3), and its vapor can travel a considerable distance to an ignition source and "flash back." MEK vapor forms explosive mixtures with air at concentrations of 1.9 to 11% (by volume). Carbon dioxide or dry chemical extinguishers should be used for MEK fires.화학 반응
Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.잠재적 노출
MEK is used as a solvent in nitrocellulose coating and vinyl film manufacture; in smokeless powder manufacture; in cements and adhesives and in the dewaxing of lubricating oils. It is also an intermediate in drug manufactureCarcinogenicity
Although MEK has not been specifically examined in a rodent 2-year bioassay, there is little to suggest that the material is carcinogenic. When used as a delivery vehicle in a dermal carcinogenicity bioassay for organic sulfur compounds, Horton et al. found that the application of benzyl disulfide or phenylbenzylthiophene in a 25–29% solution of MEK in dodecylbenzene together failed to increase the incidence of benign skin papillomas in male C3H/HeJmice. The mice used in the experiments were treated twice a week for 52 weeks with the MEKcontaining test solution.저장
2-Butanone should be protected from moisture.운송 방법
UN1193 Methyl ethyl ketone or Ethyl methyl ketone, Hazard Class: 3; Labels: 3-Flammable liquid.비 호환성
May form explosive mixture with air. Violent reaction with strong oxidizers, amines, ammonia, inorganic acids; caustics, isocyanates, pyridines. Incompatible with potassium tert-butoxide, 2-propanol, chlorosulfonic acid; oleum. Attacks some plastics. Ketones are incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, nitrated amines, azo, diazo, azido compounds, carbamates, organic cyanates폐기물 처리
Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform to EPA regulations governing storage, transportation, treatment, and waste disposal. Incineration주의 사항
2-Butanone vapor and air mixtures are explosive. It reacts violently with strong oxidants and inorganic acids causing fi re and explosion hazard.메틸에틸케톤 준비 용품 및 원자재
원자재
Dehydrogenation catalyst
1-부텐
이소부틸벤젠
COPPER ALLOYS SET OF 5 DISCS (35 MM DIAM., 2 MM THICKNESS)
sec-부탄올
CUPRIC CHLORIDE SOLUTION
산화아연
과산화 수소
구리크롬철광
부탄
팔라듐 염화물
메틸알콜
SULFATE STANDARD
ZINC-COPPER COUPLE
준비 용품
ASTRAZON PINK FG
TERT-BUTYL 4-(HYDROXYMETHYL)PYRIDIN-2-YLCARBAMATE
DL-이소류신
3',4'-(DIOCTYLOXY)벤잘데하이드
Saquinavir
알리자프리드
2-IODO-ISONICOTINIC ACID
디아세틸 모노옥심
ETHYL 2-AMINO-4,5-DIMETHYLTHIOPHENE-3-CARBOXYLATE
5,6-디메틸티에노[2,3-D]피리미딘-4(3H)-ONE
배노밀
4-CHLORO-5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDINE
2-AMINO-4,5-DIMETHYL-THIOPHENE-3-CARBONITRILE
디메틸글리옥심
3-메틸-1-펜틴-3-올
SEC-BUTYLAMINE
2-벤조푸란카르복실산,에틸에스테르
5-METHOXYBENZOFURAN-2-BORONIC ACID
Carboxymethoxylamine hemihydrochloride
Industrial gear oil,weight load
Industrial gear oil,middle load
optical diskbase material modified PMMA copolymer
1-(3-AMINO-BENZOFURAN-2-YL)-ETHANONE
TERT-BUTYL 4-(AMINOMETHYL)PYRIDIN-2-YLCARBAMATE
(2-TERT-BUTOXYFORMAMIDO-PYRIDIN-4-YL)METHYL METHANESULFONATE
펜탄디온(2,3-)
벤조푸란-2-카르복실산
메틸에틸케톤 퍼옥사이드
(5,6-DIMETHYL-THIENO[2,3-D]PYRIMIDIN-4-YL)-HYDRAZINE
3-메틸벤조푸란-2-카르복실산
3-AMINO-5,6-DIMETHYL-3H-THIENO[2,3-D]PYRIMIDIN-4-ONE
sec-부틸아민
Industrial gear oil
Mivacurium chloride
2-(AMINOCARBONYL)NICOTINIC ACID
쿠마포스
2-PHENOXYACETAMIDINE HYDROCHLORIDE
프로티오포스
크산토필
2,3-디메틸인돌