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Этил винил эфир
- английское имяEthyl vinyl ether
- CAS №109-92-2
- CBNumberCB0708241
- ФормулаC4H8O
- мольный вес72.11
- EINECS203-718-4
- номер MDLMFCD00009248
- файл Mol109-92-2.mol
Температура плавления | -116 °C (lit.) |
Температура кипения | 33 °C (lit.) |
плотность | 0.753 g/mL at 25 °C (lit.) |
давление пара | 560 hPa (20 °C) |
показатель преломления | n |
Fp | −50 °F |
температура хранения | 2-8°C |
растворимость | 8.3g/l |
форма | Liquid |
цвет | Clear colorless |
Запах | nauseating-ethereal but sweet odor |
Пределы взрываемости | 1.3-12.0%(V) |
Растворимость в воде | 7.8 g/L (25 ºC) |
БРН | 605351 |
Пределы воздействия | ACGIH: Ceiling 2 mg/m3 NIOSH: Ceiling 2 mg/m3 |
Стабильность | Stable. Highly flammable. Incompatible with strong oxidizing agents. May form peroxides in storage - check for their formation before use. |
ИнЧИКей | FJKIXWOMBXYWOQ-UHFFFAOYSA-N |
LogP | 1.63 at 25℃ |
Справочник по базе данных CAS | 109-92-2(CAS DataBase Reference) |
Непрямые добавки, используемые в веществах, контактирующих с пищевыми продуктами | ETHYL VINYL ETHER |
FDA 21 CFR | 175.105 |
Рейтинг продуктов питания EWG | 1 |
FDA UNII | 6235C9592H |
Справочник по химии NIST | Ethene, ethoxy-(109-92-2) |
Система регистрации веществ EPA | Vinyl ethyl ether (109-92-2) |
Коды опасности | F+,Xi,F | |||||||||
Заявления о рисках | 12-19-36/37/38-11 | |||||||||
Заявления о безопасности | 16-23-26-3/7-33-36-9 | |||||||||
РИДАДР | UN 1302 3/PG 1 | |||||||||
WGK Германия | 1 | |||||||||
RTECS | KO0710000 | |||||||||
F | 19 | |||||||||
Температура самовоспламенения | 178 °C | |||||||||
TSCA | Yes | |||||||||
Класс опасности | 3 | |||||||||
Группа упаковки | I | |||||||||
кода HS | 29091900 | |||||||||
Банк данных об опасных веществах | 109-92-2(Hazardous Substances Data) | |||||||||
Токсичность | LD50 orally in Rabbit: 6120 mg/kg LD50 dermal Rabbit > 15000 mg/kg | |||||||||
NFPA 704: |
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рисовальное письмо(GHS)
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рисовальное письмо(GHS)
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сигнальный язык
опасность
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вредная бумага
H225:Легковоспламеняющаяся жидкость. Пары образуют с воздухом взрывоопасные смеси.
H336:Может вызывать сонливость или головокружение.
H412:Вредно для водных организмов с долгосрочными последствиями.
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оператор предупредительных мер
P210:Беречь от тепла, горячих поверхностей, искр, открытого огня и других источников воспламенения. Не курить.
P233:Держать в плотно закрытой/герметичной таре.
P240:Заземлить и электрически соединить контейнер и приемное оборудование.
P241:Использовать взрывобезопасное оборудование и освещение.
P242:Использовать неискрящие приборы.
P273:Избегать попадания в окружающую среду.
Этил винил эфир химические свойства, назначение, производство
Химические свойства
Colorless liquid. Extremely reactive, can be polymerized in liquid or vapor phase. Slightly soluble in water (0.9% by weight). Commercial material contains inhibitor to prevent premature polymerization. Often stored underground to minimize vapor losses.Использование
Ethyl vinyl ether is used in fragrances, lubricating oil additives and spices preparation. It acts as an intermediate for sulfadiazine. It finds application in pharmaceuticals as anesthetics and analgesics. Further, it is used as a solvent in organic synthesis.Подготовка
Ethyl vinyl ether (EVE) can be prepared by reacting acetylene with absolute ethanol in the presence of an alkali catalyst. The most commonly used catalyst for vinylation is an alkali metal hydroxide or an alkali metal alkoxide.![Ethyl vinyl ether Ethyl vinyl ether](/NewsImg/2024-03-14/6384602321439066256235259.png)
In China, three processes for the manufacture of EVE using the acetylene route were used:
A continuous process with a homogeneous catalyst under high pressure. The advantages of this process are fast reaction rate and high conversion, but the disadvantages include the requirement of high standard equipment, large energy consumption, and easy safety issues.
A process with a solid catalyst (heterogeneous catalyst) under atmospheric pressure is relatively simple in product separation and refining compared with a process with a homogeneous catalyst under high pressure. However, it has the disadvantages of low output, the short service life of catalyst (about 110 h), and a high requirement on the specification of carrier lime.
A process with a homogeneous catalyst under atmospheric pressure has the advantages of high output and good safety but disadvantages of low conversion.
In the process with solid catalyst under atmospheric pressure, acetylene, and ethanol vapor were introduced into a fixed-bed reactor, and the vinylation reaction was carried out at a temperature as high as about 180 °C. EVE was produced with a concentration of about 70% in the outlet gas stream from the reactor. The fixed-bed reactor was charged with 4–5 mesh catalyst particles of potassium hydroxide supported on lime.
Общее описание
A clear colorless low-boiling liquid (35-36°C) with an ether-like odor. Flash point below -50°F. May polymerize exothermically if heated or contaminated. If polymerization takes place inside a container, the container may rupture violently. Less dense than water and slightly soluble in water. Hence floats on water. Vapors are heavier than air.Реакции воздуха и воды
Highly flammable. Slightly soluble in water. Tends to form explosively unstable peroxides when exposed to oxygen.Профиль реактивности
Ethyl vinyl ether is a very dangerous fire and explosion hazard when exposed to heat or flame. Undergoes autooxidation with formation of peroxides in the air. Can react vigorously with oxidizing materials. Undergoes explosive polymerization in contact with methanesulfonic acid [Eaton, P. E. et al., J. Org. Chem., 1972, 37, p. 1947].Опасность
Carcinogen.Угроза здоровью
INHALATION OR INGESTION: Excitement followed by unconsciousness and respiratory paralysis. CNS depression. EYES: May cause irritation and transient injury to cornea. SKIN: Prolonged contact can cause tissue defatting and dehydration leading to dermatitis.Пожароопасность
Behavior in Fire: Explosive hazardПрофиль безопасности
Mddly toxic by ingestion. Mutation data reported. A skin irritant. A very dangerous fire and explosion hazard when exposed to heat or flame; can react vigorously with oxidizing materials. To fight fire, use alcohol foam, foam, CO2, dry chemical. Explosive polymerization is catalyzed by methane sulfonic acid. When heated to decomposition it emits acrid smoke and irritating fumes. See also ETHERS.Синтез
Ethyl vinyl ether is synthesized by bubbling Acetylene through Ethylalcohol in presence of Sodium ethoxide.Методы очистки
It usually contains polymerization inhibitors (usually amines, e.g. triethanolamine) which can be removed by fractional distillation. Redistil it from sodium. [Beilstein 1 IV 2049.] LACHRYMATORY.Этил винил эфир запасные части и сырье
сырьё
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