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메틸 T-뷰틸에테르

메틸 T-뷰틸에테르
메틸 T-뷰틸에테르 구조식 이미지
카스 번호:
1634-04-4
한글명:
메틸 T-뷰틸에테르
동의어(한글):
메틸T-뷰틸에테르;t-부틸메틸에테르;2-메톡시-2-메틸프로판;메틸삼차뷰틸에테르;메틸t-부틸에테르;메틸삼차부틸에테르;메틸터트-부틸에테르;메틸삼차부틸에테르;메틸 T-뷰틸에테르
상품명:
tert-Butyl methyl ether
동의어(영문):
MTB;MTBE;TBME;HP-MTBE;Driveron;MBT-ETHER;tert-C4H9OCH3;Methyl-tert-bu;JACS-1634-04-4;BOC-ARG(MTR)-OH
CBNumber:
CB2853178
분자식:
C5H12O
포뮬러 무게:
88.15
MOL 파일:
1634-04-4.mol

메틸 T-뷰틸에테르 속성

녹는점
-110 °C
끓는 점
55-56 °C(lit.)
밀도
0.7404
증기 밀도
3.1 (vs air)
증기압
4.05 psi ( 20 °C)
굴절률
n20/D 1.369(lit.)
인화점
-27 °F
저장 조건
Store at +2°C to +25°C.
용해도
42g/l
물리적 상태
Powder or Needles
색상
APHA: ≤10
Specific Gravity
0.740
냄새
Characteristic ethereal odor
상대극성
0.124
폭발한계
1.5-8.5%(V)
수용성
51 g/L (20 ºC)
어는점
-108.6℃
최대 파장(λmax)
λ: 210 nm Amax: 1.0
λ: 225 nm Amax: 0.50
λ: 250 nm Amax: 0.10
λ: 300-400 nm Amax: 0.005
Merck
14,6032
BRN
1730942
안정성
Stable, but may form explosive peroxides in contact with air. Extremely flammable - note low flash point. Incompatible with strong oxidizing agents.
InChIKey
BZLVMXJERCGZMT-UHFFFAOYSA-N
CAS 데이터베이스
1634-04-4(CAS DataBase Reference)
NIST
Propane, 2-methoxy-2-methyl-(1634-04-4)
IARC
3 (Vol. 73) 1999
EPA
Methyl tert-butyl ether (1634-04-4)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xn,F,Xi,T
위험 카페고리 넘버 36/37/38-40-38-11-39/23/24/25-23/24/25
안전지침서 9-16-24-45-36/37-7
유엔번호(UN No.) UN 2398 3/PG 2
WGK 독일 3
RTECS 번호 KN5250000
F 고인화성물질 3-10
자연 발화 온도 705 °F
TSCA Yes
HS 번호 2909 19 90
위험 등급 3
포장분류 II
유해 물질 데이터 1634-04-4(Hazardous Substances Data)
독성 . LC50 in mice (15 min): 1.6 mmol/liter of atmosphere (Marsh)
기존화학 물질 KE-23648
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H225 고인화성 액체 및 증기 인화성 액체 구분 2 위험 P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H303 삼키면 유해할 수 있음 급성 독성 물질 - 경구 구분 5 P312
H304 삼켜서 기도로 유입되면 치명적일 수 있음 흡인 유해성물질 구분 1 위험
H315 피부에 자극을 일으킴 피부부식성 또는 자극성물질 구분 2 경고 P264, P280, P302+P352, P321,P332+P313, P362
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 P264, P280, P305+P351+P338,P337+P313P
H335 호흡 자극성을 일으킬 수 있음 특정 표적장기 독성 - 1회 노출;호흡기계 자극 구분 3 경고
H336 졸음 또는 현기증을 일으킬 수 있음 특정표적장기 독성 물질(1회 노출);마취작용 구분 3 경고 P261, P271, P304+P340, P312,P403+P233, P405, P501
H351 암을 일으킬 것으로 의심됨 (노출되어도 암을 일으키지 않는다는 결정적인 증거가 있는 노출경로가 있다면 노출경로 기재) 발암성 물질 구분 2 경고 P201, P202, P281, P308+P313, P405,P501
예방조치문구:
P201 사용 전 취급 설명서를 확보하시오.
P202 모든 안전 조치 문구를 읽고 이해하기 전에는 취급하지 마시오.
P210 열·스파크·화염·고열로부터 멀리하시오 - 금연 하시오.
P233 용기를 단단히 밀폐하시오. 용기는 환기가 잘 되는 곳에 단단히 밀폐하여 보관하시오.
P240 용기와 수용설비를 접지 및 접합시키시오.
P241 폭발 방지용 장비[전기적/환기/조명/...]을(를) 사용하시오.
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
P264 취급 후에는 손을 철저히 씻으시오.
P264 취급 후에는 손을 철저히 씻으시오.
P271 옥외 또는 환기가 잘 되는 곳에서만 취급하시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P303+P361+P353 피부(또는 머리카락)에 묻으면 오염된 모든 의복은 벗거나 제거하시오 피부를 물로 씻으시오/샤워하시오.
P308+P313 노출 또는 접촉이 우려되면 의학적인 조치· 조언를 구하시오.
P370+P378 화재 시 불을 끄기 위해 (Section 5. 폭발, 화재시 대처방법의 적절한 소화제)을(를) 사용하시오.
P405 밀봉하여 저장하시오.
P403+P233 용기는 환기가 잘 되는 곳에 단단히 밀폐하여 저장하시오.
P403+P235 환기가 잘 되는 곳에 보관하고 저온으로 유지하시오.
P501 ...에 내용물 / 용기를 폐기 하시오.
NFPA 704
3
2 0

메틸 T-뷰틸에테르 C화학적 특성, 용도, 생산

세탁 효과

알킬 벤젠 술폰산 나트륨은 황색 유성 물질이며, 정제 후 육각형 또는 사방형 강편 결정을 형성 할 수있다. 과일과 깨끗한 식기, 세제 나트륨 알킬 벤젠 설포 네이트에 사용되는 대규모 자동 생산, 저렴한 가격, 가장 큰 규모의 세제 사용량에 알킬 벤젠 설폰 산 나트륨은 분기 체인 구조 (ABS) 및 선형 구조 (LAS), 두 가지 종류의 분지 사슬 구조 생분해 성이 작고, 환경 오염을 일으킬 수 있고, 선형 구조가 쉽게 생분해되며 생분해 성이 90 % 이상이며 환경 오염이 적습니다.
도데 실 벤젠 술폰산 나트륨은 중성이며 물의 경도에 민감하고 산화하기 쉽지 않으며 강력한 거품 생성력, 높은 세척력, 다양한 첨가제, 저렴한 비용, 성숙한 합성 과정, 다양한 응용 분야와 혼합되기 쉽고 매우 우수합니다 음이온 성 계면 활성제. 도데 실 벤젠 설포 네이트는 입자 흙, 단백질 오물 및 유분 오염, 특히 천연 섬유의 입자 오염에 대해 상당한 오염 제거 효과를 발휘합니다. 오염 제거력은 세척 온도의 증가에 따라 향상되고 단백질 먼지에 대한 효과는 비이 온성 계면 활성제보다 높으며 포말은 풍부합니다. 그러나, 도데 실 벤젠 술폰산 나트륨에는 두 가지 단점이있다. 하나는 경수에 대한 내성이 약하며 물의 경도에 따라 오염 제거 성능이 저하 될 수 있다는 것입니다. 따라서 주요 활성제를 함유 한 세제는 적절한 수의 킬레이트 제와 함께 사용해야합니다. 둘째, 강력한 탈지 능력, 피부에 자극이있을 때 손을 씻고, 유연제로 린스 해 양이온 성 계면 활성제를 사용한 후에 옷을 씻는 느낌이 듭니다. 최근에 도데 실 벤젠 설포 네이트는보다 포괄적 인 세척 효과를 위해 지방 알코올 폴리 옥시 에틸렌 에테르 (AEO)와 같은 비이 온성 계면 활성제와 함께 사용됩니다. 도데 실 벤젠 술폰산 나트륨의 주요 용도는 다양한 종류의 액체, 분말 및 과립 세제, 세정기 및 세정제를 준비하는 것입니다.

개요

Internal combustion engines of high compression ratio require petrol with octane ratings that are sufficiently high to ensure efficient combustion. An economical way of achieving this property has been the use of anti-knock additives, such as tetraethyl and tetramethyl lead at concentrations up to 0.84 g l1. It was increasingly recognized, however, that lead is toxic and nondegradable, so its use in this way was gradually phased out. This action, which has been to the benefit of human health and the environment, required the reformulation of fuels to provide the desired high-octane ratings by the use of oxygenates. Fuel oxygenates are oxygen-rich compounds that act as octane enhancers, bringing the additional benefit of making petrol burn more completely, thereby reducing exhaust emissions. Oxygenates can be blended into petrol in two forms: alcohols (such as methanol or ethanol) or ethers.
The fuel oxygenate first used in reformulation was methyl tertiary-butyl ether, Chemical Abstracts Service Registry Number (CAS RN) 1634-04-4 (MTBE). It had been recognized during World War II that MTBE had particularly good octaneenhancing properties, allowing octane numbers of 115–135 (Research Octane Number (RON)) and 98–120 (motor octane number) to be achieved, but it was not until 1973, spurred by the global oil crisis, that the first commercial plant given to the production of MTBE was opened in Italy. The introduction of lead-free fuels led to the development of three-way catalytic converters, which are based on platinum. Lead poisons the platinum catalyst, so such converters had been hitherto unusable. Catalytic converters allow a more nearly complete combustion of fuel, thereby reducing exhaust emissions such as carbon monoxide, unburned hydrocarbons, polycyclic aromatics, nitrogen oxides, and particulate carbon. These substances contributed significantly to the formation of smog, a phenomenon that is no longer a feature in the urban areas of those countries in which leaded petrol is prohibited.

용도

tert-부틸화제.

화학적 성질

Methyl tert-butyl ether (MTBE), also known as tert-butyl methyl ether, a colorless liquid, is an aliphatic ether and volatile organic compound (VOC). It is moderately soluble in water and very soluble in some organic solvents such as alcohol and diethylether (ATSDR, 1996). It is a flammable liquid with a characteristic odor.

역사

Methyl Tertiary Butyl Ether (MTBE) was first commercially produced in Italy in 1973 for use as an octane enhancer in gasoline. U.S. production of MTBE started in 1979 after Atlantic Richfield Co. (ARCO) was granted a waiver by the U.S. Environmental Protection Agency (EPA) that allowed MTBE to be blended up to 7 vol % in U.S. unleaded gasoline. The use of other aliphatic ethers was allowed when the U.S. EPA issued its “substantially similar” definition for unleaded gasoline specifications in 1981. Under this definition, any aliphatic ether or ether mixture could be blended in unleaded gasoline as long as the total oxygen contribution from the ethers does not exceed 2.0% oxygen by weight in the gasoline. This allowed MTBE to be blended up to approximately 11 vol % in gasoline.

용도

In western Europe, the second largest market for petrol in the world, concentrations of MTBE in petrol vary from 0 to 15%, depending on petrol grade, oil company, and country. As examples, 98–99 RON petrol grade (high performance, super, super plus) may typically contain 5–13% MTBE, whereas 92–95 RON grade (premium) contains 0.5–8% MTBE.
The use of MTBE as an octane enhancer in the United States began in 1979. By 1990, the Clean Air Act Amendments in the United States required fuel oxygenates, such as MTBE at 15% and ethanol, to be added to petrol in some metropolitan areas heavily polluted by carbon monoxide to reduce carbon monoxide and ozone concentrations. Areas that exceeded the national ambient air-quality standard for carbon monoxide were required to use oxygenated fuels by November 1, 1992. Despite the clear benefits of using oxygenates, there have been restrictions placed on its use in many areas of the United States because of growing numbers of detections of MTBE in drinking water resulting from leaking underground petrol tanks.

용도

Methyl tert-butyl ether (MTBE) is a synthetic chemical with synonyms methyl tertiary-butyl ether, tert-butyl methyl ether, tertiary-butyl methyl ether, methyl-1,1-dimethylethyl ether, 2-methoxy-2-methylpropane, 2-methyl-2-methoxypropane, methyl t-butyl ether, and MTBE. It was primarily used as a gasoline additive in unleaded gasoline in the United States prior to 2005, in the manufacture of isobutene, and as a chromatographic eluent especially in high pressure liquid chromatography (ATSDR, 1996; HSDB, 2012). It is also a pharmaceutical agent and can be injected into the gallbladder to dissolve gallstones (ATSDR, 1996). As a result of its manufacture and use, MTBE may be released into the environment through various waste streams directly (IPCS, 1998; HSDB, 2012).
The predominant use for MTBE in the United States was as an oxygenate in unleaded gasoline promoting more complete burning of gasoline. Reformulated fuel with MTBE was widely used in the United States between 1992 and 2005 to meet the 1990 Clean Air Act Amendments (CAAA) requirements for reducing carbon monoxide (CO) and ozone (O3) levels.

용도

Methyl tert-butyl ether is used as a gasoline additive. Octane booster in gasoline.Nearly all methyl tert-butyl ether produced in the United States is used as an additive in unleaded gasoline to increase octane levels and reduce carbon monoxide emissions.
Chromatographic eluent especially in HPLC. Suitable for pesticide residue analysis.

정의

ChEBI: An ether having methyl and tert-butyl as the two alkyl components.

제조 방법

tert-butyl methyl ether can be prepared by the reaction of potassium tert-butoxide and bromomethane.
preparation of tert-butyl methyl ether

일반 설명

A colorless liquid with a distinctive anesthetic-like odor. Vapors are heavier than air and narcotic. Boiling point 131°F. Flash point 18°F. Less dense than water and miscible in water. Used as a octane booster in gasoline.

공기와 물의 반응

Highly flammable. Oxidizes readily in air to form unstable peroxides that may explode spontaneously [Bretherick 1979. p.151-154, 164]. A mixture of liquid air and diethyl ether exploded spontaneously [MCA Case History 616. 1960].

반응 프로필

Ethers, such as tert-Butyl methyl ether, can act as bases. They form salts with strong acids and addition complexes with Lewis acids. The complex between diethyl ether and boron trifluoride is an example. Ethers may react violently with strong oxidizing agents. In other reactions, which typically involve the breaking of the carbon-oxygen bond, ethers are relatively inert.

위험도

Slightly toxic by ingestion and inhalation. Flammable when exposed to heat or flame. Upper respiratory tract irritant and kidney damage. Questionable carcinogen.

건강위험

INHALATION: May cause dizziness or suffocation. Contact may irritate or burn eyes or skin. May be harmful if swallowed.

공업 용도

Methyl tert-butyl ether (MTBE) is used as an octane enhancer in gasoline. EPA regulations allow up to 2.7 wt.% oxygen in gasoline which allows 15 vol.% MTBE in gasoline. Other alkyl ethers can also be blended into gasoline up to the 2.7 wt% oxygen requirement. The stability of MTBE to oxidation and peroxide formation gives this unsymmetrical ether an advantage over other ethers in various extraction and reaction solvent applications.

Safety Profile

Poison by intravenous route. Slightly toxic by ingestion and inhalation. Flammable when exposed to heat or flame. When heated to decomposition it emits acrid smoke and irritating fumes. See also ETHERS.

잠재적 노출

Used as an organic solvent; as an octane booster in unleaded gasolines; in making other chemicals; and in medicine to dissolve gall stones

Carcinogenicity

Basis of determination of carcinogenicity of chemical compounds. There is general agreement among experts in chemical carcinogenesis that a substance that causes cancer in significant numbers of experimental animals in well-conducted assays poses a presumptive carcinogenic risk to humans, even in the absence of confirmatory epidemiological data. This principle is accepted by scientific and medical experts throughout the world and has served for many years as the basis for sound public health policy and regulatory action on carcinogens. For example, the International Agency for Research on Cancer (IARC) of the World Health Organization in its Supplement 7 of the Monograph states.
Ntp criteria for listing chemicals as “reasonably anticipated to be a human carcinogen”.
Evidence of MTBE as a potential human carcinogen. Evidence from three separate animal bioassay studies (two different species of rats and in mice) demonstrates that chronic exposure to MTBE by either oral or inhalation route of exposure causes cancers in animals.

환경귀착

tert-Butyl Methyl Ether can be released during manufacturing or blending with gasoline; during the storage, distribution, and transfer of MTBE-blended gasoline; and from spills or leaks or fugitive emissions at automotive service stations (U.S. EPA, 1994a). Vapor emissions from MTBE-blended gasoline may also contribute to atmospheric levels (U.S. EPA, 1988). It is not expected to persist in the atmosphere because it undergoes destruction from reactions with hydroxyl radicals. A total atmospheric lifetime for MTBE of approximately 3 and 6.1 days has been reported in polluted urban air and in nonpolluted rural air, respectively (U.S. EPA, 1993a). Based upon its vapor pressure and Henry s law constant, MTBE is highly volatile and would be expected to evaporate rapidly from soil surfaces or water. It may be fairly persistent when introduced into subsurface soils or to groundwater since volatilization to the atmosphere is reduced or eliminated. It does not readily degrade in surface waters due to hydrolysis or other abiotic processes. It is also resistant to biodegradation (U.S. EPA, 1993a). It is usually removed from surface waters very rapidly because of its high volatility. If released as part of a gasoline mixture from leaking underground storage tanks, its relatively high water solubility combined with little tendency to sorb to soil particles encourages migration to local groundwater supplies (U.S. EPA, 1993a).

운송 방법

UN2398 Methyl tert-butyl ether, Hazard Class: 3; Labels: 3-Flammable liquid.

Purification Methods

Purify as for n-butyl methyl ether. [Beilstein 1 IV 1615.]

Toxicity evaluation

Generalizations are difficult to make for all of these different compounds. The transient neurological effects of the ethers at high doses may have a mechanistic commonality with others of this class, but this topic has not been studied in any detail. Even the mechanisms of ethanol neurotoxicity are not fully understood, despite years of research. The increase in renal tubule cell adenomas in male rats appears to be related in part to the male rat-specific α2u-globulin nephropathy in the case of TBA exposure, but more generally exacerbation of chronic progressive nephropathy (CPN), a naturally occurring disease that is specific to rats, seems to be a strong risk factor. It is not understood how this change in disease status occurs, but unlike α2u-globulin nephropathy there is no known biochemical basis for CPN exacerbation. Some of the few attempts to understand the mechanisms of toxicity can be found in Further Reading section.

비 호환성

May form explosive mixture with air. May be able to form unstable peroxides. Much less likely to form peroxides than other ethers. Incompatible with strong acids. 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. May accumulate static electrical charges, and cause ignition of its vapors.

폐기물 처리

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.

메틸 T-뷰틸에테르 준비 용품 및 원자재

원자재

준비 용품


메틸 T-뷰틸에테르 공급 업체

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career henan chemical co
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Hubei Jusheng Technology Co.,Ltd.
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Jinan Finer Chemical Co., Ltd
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Hebei Guanlang Biotechnology Co., Ltd.
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Xiamen AmoyChem Co., Ltd
+86 592-605 1114
sales@amoychem.com CHINA 6369 58

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