이소부텐
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이소부텐 속성
- 녹는점
- −140 °C
- 끓는 점
- −6.9 °C(lit.)
- 밀도
- 0.5879
- 증기 밀도
- 2 (vs air)
- 증기압
- 3278 mm Hg ( 37.7 °C)
- 굴절률
- 1.3811
- 인화점
- -80 °C
- 물리적 상태
- 투명한 액체
- 색상
- 무색 내지 거의 무색
- Odor Threshold
- 10ppm
- 수용성
- 263mg/L(25℃)
- 어는점
- -140.34℃
- Merck
- 14,5141
- BRN
- 773645
- Henry's Law Constant
- 0.20, 0.26, 0.33, and 0.41 at 30, 40, 50, and 60 °C, respectively (Leung et al., 1987:Zhang et al., 2002)
- 안정성
- 안정적인. 가연성이 높음 - 공기와 쉽게 폭발성 혼합물을 형성합니다. 강한 산화제와 호환되지 않습니다.
- InChIKey
- VQTUBCCKSQIDNK-UHFFFAOYSA-N
- LogP
- 2.35 at 20℃
- CAS 데이터베이스
- 115-11-7(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | F+ | ||
---|---|---|---|
위험 카페고리 넘버 | 12 | ||
안전지침서 | 9-16-33 | ||
유엔번호(UN No.) | UN 1055 2.1 | ||
WGK 독일 | - | ||
RTECS 번호 | UD0890000 | ||
F 고인화성물질 | 4.5-31 | ||
자연 발화 온도 | 869 °F | ||
DOT ClassificationII | 2.1 (Flammable gas) | ||
위험 등급 | 2.1 | ||
포장분류 | III | ||
HS 번호 | 29012330 | ||
유해 물질 데이터 | 115-11-7(Hazardous Substances Data) | ||
독성 | LC50 (inhalation) for mice 415 g/m3/2-h, rats 620 g/m3/4-h (quoted, RTECS, 1985). | ||
기존화학 물질 | KE-24902 |
이소부텐 C화학적 특성, 용도, 생산
기타 역할
모든 객체에는 자체 정전압이 있으며 음이나 양이 될 수 있습니다. 정전기의 축적은 인명 또는 산업 생산에 영향을 미치거나 심지어 해를 끼치며, 생산이나 수명에 불편을 끼치거나 상해를주는 화학 물질을 정전기 방지제라고합니다. 도데 실 벤젠 술폰산 나트륨은 음이온 성 계면 활성제로서 직물, 플라스틱 및 기타 표면 친 화성 수분의 표면을 만들 수 있습니다. 한편, 이온 성 계면 활성제는 전기를 통전하여 정전기 누출을 제 시간에 맞출 수있어 정전기로 인한 위험 및 불편을 줄일 수 있습니다.개요
물, 에탄올, 에테르에 임의의 비율로 섞인다. 물과 함께 끓는 혼합물(물 21.76%)을 만들어 80℃로 유출한다. 다른 이성질체에 비교해 매우 탈수되기 쉽고, 묽은 황산에 의해서도 탈수되어 이소부틸렌이 된다(다른 부틸알코올은 해당하는 에테르를 준다). 그러므로 에스테르를 생성하기 어렵다. 산화는 4이성질체 중에서 가장 곤란하고, 강하게 산화하면 아세톤, 아세트산, 이산화탄소 등으로 분해한다. 흑연에서 480~550℃로, 또 환원 구리에서 280~400℃로 가열하면 이소부틸렌과 물로 분해한다. 벤젠핵을 알킬화할 때는 이소부틸알코올과 마찬가지로 tert-부틸기가 되어 도입된다.물리적 성질
Colorless gas with a coal gas-like odor. The odor threshold concentration is 10 ppmv Nagata and Takeuchi (1990). This gas can be liquefied under pressure. The substance has low solubility in water, soluble in organic solvent, easy to polymerize. It is nonexplosive; however, it forms explosive mixtures with air. Containers holding isobutylene under pressure may explode if heated. The boiling point and freezing point of isobutylene are -6.9°C (19.6°F) and -141°C (-221°F), respectively. Isobutylene is extremely flammable. It is stable under recommended storage conditions and no decomposition may occur if stored and applied as directed.용도
Isobutylene is used as a monomer for the production of various polymers such as butyl rubber, polybutene and polyisobutylene. The most important application of butyl rubber is the manufacture of tyres for cars and other vehicles. Other applications of butyl rubber, polybutene and poyisobutylene are lubricants (motor oils), adhesives, sealants and coatings. Another major use of isobutylene is the production of methyl-tert-butyl ether (MTBE) and ethy-tert-butyl ether (ETBE) which are gasoline blending components for cleaner burning fuels. Isobutylene is also used for the production of anti-oxidants, fragrances and gas odorization products.용도
Isobutylene is an easily liquefied gas that primarily used to produce diisobutylene, trimers, butyl rubber, and other polymers. It is also used to produce antioxidants for foods, packaging, food supplements, and for plastics: Hatch, Pet. Refin. 39, No. 6, 207 (1960).주요 응용
Isobutylene is an important petrochemical raw material. In the pesticide industry, it is mainly used for the preparation of the organophosphorus insecticide terbufos, the pyrethroid insecticide permethrin and the acaricide pyridaben. Industrially, high-concentration isobutylene is mainly used for the production of polyisobutylene and copolymerization with isoprene to produce butyl rubber. The alkylation reaction of isobutene and isobutane can produce high-octane alkylated gasoline, and methyl tert-butyl ether obtained by reacting with methanol is an excellent gasoline additive.정의
ChEBI: isobutylene is an alkene that is prop-1-ene substituted by a methyl group at position 2. It is an alkene and a gas molecular entity.생산 방법
Isobutene is produced in refinery streams by absorption on 65% H2SO4 at about 15C, or by reacting with an aliphatic primary alcohol and then hydrolyzing the resulting ether.일반 설명
Isobutylene is a colorless gas with a faint petroleum-like odor. For transportation it may be stenched. It is shipped as a liquefied gas under its own vapor pressure. Contact with the liquid can cause frostbite. It is easily ignited. Its vapors are heavier than air and a flame can flash back to the source of leak very easily. The leak can either be a liquid or vapor leak. It can asphyxiate by the displacement of air. Under prolonged exposure to fire or heat the containers may rupture violently and rocket. It is used in the production of isooctane, a high octane aviation gasoline.공기와 물의 반응
Highly flammable.반응 프로필
ISOBUTYLENE is incompatible with oxidizers. ISOBUTYLENE polymerizes easily. ISOBUTYLENE reacts easily with numerous materials, such as alkyl halides, halogens, concentrated sulfuric acid, hypochlorous acid, aluminum chloride, carbon monoxide and hydrogen with a cobalt catalyst. Polymerization is catalyzed by aluminum chloride and boron trifluoride.위험도
Highly flammable, dangerous fire and explosion risk, explosive limits in air 1.8–8.8%.건강위험
Inhalation of moderate concentrations causes dizziness, drowsiness, and unconsciousness. Contact with eyes or skin may cause irritation; the liquid may cause frostbite.화재위험
Behavior in Fire: Containers may explode in fire. Vapor is heavier than air and may travel a long distance to a source of ignition and flash back.Carcinogenicity
Groups of 50 male and 50 female F344/N rats were exposed to isobutene at concentrations of 0, 500, 2000, or 8000 ppm6 h/day 5 days/week for 105 weeks. Groups of 50 male and 50 female B6C3F1 mice were exposed to isobutene at concentrations of 0, 500, 2000, or 8000 ppm 6 h/day, 5 days/week for 105 weeks. Under the conditions of these 2 year inhalation studies, there was some evidence of the carcinogenic activity of isobutene in male F344/N rats based on an increased incidence of follicular cell carcinoma of the thyroid gland. There was no evidence of the carcinogenic activity of isobutene in female F344/N rats or male or female B6C3F1 mice exposed to 500, 2000, or 8000 ppm.환경귀착
Photolytic. Products identified from the photoirradiation of 2-methylpropene with nitrogen dioxide in air are 2-butanone, 2-methylpropanal, acetone, carbon monoxide, carbon dioxide, methanol, methyl nitrate, and nitric acid (Takeuchi et al., 1983). Similarly, products identified from the reaction of 2-methylpropene with ozone included acetone, formaldehyde, methanol, carbon monoxide, carbon dioxide, and methane (Tuazon et al., 1997).The following rate constants were reported for the reaction of 2-methylpropene and OH radicals in the atmosphere: 3.0 x 10-13 cm3/molecule?sec at 300 K (Hendry and Kenley, 1979); 5.40 x 10-11 cm3/molecule?sec (Atkinson et al., 1979); 5.14 x 10-11 at 298 K (Atkinson, 1990). Reported reaction rate constants for 2-methylpropene and ozone in the atmosphere include 2.3 x 10-19 cm3/molecule?sec (Bufalini and Altshuller, 1965); 1.17 x 10-19 cm3/molecule?sec at 300 K (Adeniji et al., 1965); 1.21 x 10-17 cm3/molecule?sec at 298 K (Atkinson, 1990).
Chemical/Physical. Complete combustion in air yields carbon dioxide and water. Incomplete combustion yields carbon monoxide.
Purification Methods
Dry isobutene by passage through anhydrous CaSO4 at 0o. Purify it further by freeze-pump-thaw cycles and trap-to-trap distillation. [Beilstein 1 IV 796.]이소부텐 준비 용품 및 원자재
원자재
준비 용품
Petroleum additive
2-t-부틸하이드로퀴논
산토녹스
4-t-부틸카테콜
부틸(1-3차)메틸벤젠(4-)
1,1,3-트리스(2-메틸-4-하이드록시-5-t-부틸페닐)부탄
2,3-Dihydro-2,2-dimethyl-7-benzofuranol
2-chloro-2-methyl propanal oxime dimer
2-아크릴아미도-2-메틸프로판술폰산
2,6-디이소프로필페놀
2-chloro-2-trichloroethyl-3,3-dimethyl cyclobutenone
2,2-다이메틸프로판산
스테아릴-β-(3,5-디-t-부틸-4-하이드록시페닐)프로피오네이트
2-(5-클로로-2H-벤조트리아졸-2-일)-4,6-비스(1,1-다이메틸에틸)페놀
2,4-디-t-부틸페놀
corrosion inhibitor PBTCA-type
메틸(디엘-2)부틸산메틸에스테르
트리이소부틸알루미늄
2-tert-Butyl-4-methylphenol
6-터트-부틸-메타-크레졸
부탄
캅토프릴
메틸(3-)-2-부텐-1-올
이소부틸렌-이소프렌 공중합체
FEMA 2961
ALDICARB-OXIME
폴리이소부틸렌
Antioxidant T502
2,5-디-t-부틸하이드로퀴논
부틸산화 히드록시톨루엔
2,6-디-t-b부틸페놀
비스(2-하이드록시-3-TERT-부틸-5-메틸페닐)메탄
Methyl 3-methyl-2-butenoate
디메틸-2.4-헥사디엔
Isobutenyl sulfide
2,2-DIMETHYL-3-(2-METHYLPROP-1-ENYL)CYCLOPROPANECARBOXYLIC ACID
메탈릴클로라이드
삼차뷰틸 머캡탄
2,2,4-트리메칠펜탄
부소부틸로니트릴
이소부텐 공급 업체
글로벌( 228)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
Hebei Mojin Biotechnology Co., Ltd | +8613288715578 |
sales@hbmojin.com | China | 12468 | 58 |
Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 |
info@fdachem.com | China | 18222 | 58 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21689 | 55 |
career henan chemical co | +86-0371-86658258 |
sales@coreychem.com | China | 29914 | 58 |
Hubei Jusheng Technology Co.,Ltd. | 18871490254 |
linda@hubeijusheng.com | CHINA | 28180 | 58 |
Hebei Guanlang Biotechnology Co., Ltd. | +86-19930503282 |
alice@crovellbio.com | China | 8829 | 58 |
Hubei xin bonus chemical co. LTD | 86-13657291602 |
linda@hubeijusheng.com | CHINA | 22968 | 58 |
Chongqing Chemdad Co., Ltd | +86-023-61398051 +8613650506873 |
sales@chemdad.com | China | 39916 | 58 |
CONIER CHEM AND PHARMA LIMITED | +8618523575427 |
sales@conier.com | China | 49391 | 58 |
SIMAGCHEM CORP | +86-13806087780 |
sale@simagchem.com | China | 17367 | 58 |