МЕТИЛЦИКЛОГЕКСАН
- английское имяMethylcyclohexane
- CAS №108-87-2
- CBNumberCB7852767
- ФормулаC7H14
- мольный вес98.19
- EINECS203-624-3
- номер MDLMFCD00001497
- файл Mol108-87-2.mol
химическое свойство
| Температура плавления | -126 °C (lit.) |
| Температура кипения | 101 °C (lit.) |
| плотность | 0.77 g/mL at 25 °C (lit.) |
| плотность пара | 3.4 (vs air) |
| давление пара | 37 mm Hg ( 20 °C) |
| показатель преломления | n |
| Fp | 25 °F |
| температура хранения | Store below +30°C. |
| растворимость | Miscible with acetone, benzene, ether, carbon tetrachloride, ethanol, insoluble in water. |
| форма | Liquid |
| цвет | Colorless |
| Порог?обнаружения?запаха? | 0.15ppm |
| Пределы взрываемости | 1.1-6.7%(V) |
| Растворимость в воде | 0.1 g/L (20 ºC) |
| λмакс | λ: 207 nm Amax: 1.00 λ: 221 nm Amax: 0.40 λ: 232 nm Amax: 0.15 λ: 260 nm Amax: 0.05 λ: 300-400 nm Amax: 0.01 |
| Мерк | 14,6047 |
| БРН | 505972 |
| констант закона Генри | 0.0678 at 25.0 °C (Ramachandran et al., 1996) |
| Пределы воздействия | NIOSH REL: TWA 400 ppm (1,600 mg/m3), IDLH 1,200 ppm; OSHA PEL: TWA 500 ppm (2,000 mg/m3); ACGIH TLV: TWA 400 ppm (adopted). |
| Диэлектрическая постоянная | 2.1（25℃） |
| Стабильность | Stable. Very flammable. Incompatible with strong oxidizing agents. |
| LogP | 3.88 |
| Справочник по базе данных CAS | 108-87-2(CAS DataBase Reference) |
| Рейтинг продуктов питания EWG | 1 |
| FDA UNII | H5WXT3SV31 |
| Справочник по химии NIST | Cyclohexane, methyl-(108-87-2) |
| Система регистрации веществ EPA | Methylcyclohexane (108-87-2) |
больше
| Коды опасности | F,Xn,N | |||||||||
| Заявления о рисках | 11-38-51/53-65-67 | |||||||||
| Заявления о безопасности | 9-16-33-61-62 | |||||||||
| РИДАДР | UN 2296 3/PG 2 | |||||||||
| OEB | A | |||||||||
| OEL | TWA: 400 ppm (1600 mg/m3) | |||||||||
| WGK Германия | 2 | |||||||||
| RTECS | GV6125000 | |||||||||
| F | 3-10 | |||||||||
| Температура самовоспламенения | 545 °F | |||||||||
| TSCA | Yes | |||||||||
| кода HS | 2902 19 00 | |||||||||
| Класс опасности | 3 | |||||||||
| Группа упаковки | II | |||||||||
| Банк данных об опасных веществах | 108-87-2(Hazardous Substances Data) | |||||||||
| Токсичность | Acute oral LD50 for mice 2,250 mg/kg (quoted, RTECS, 1985). | |||||||||
| ИДЛА | 1,200 ppm [10% LEL] | |||||||||
| NFPA 704: |
|
рисовальное письмо(GHS)
-
рисовальное письмо(GHS)
-
сигнальный язык
опасность
-
вредная бумага
H315：При попадании на кожу вызывает раздражение.
H410：Чрезвычайно токсично для водных организмов с долгосрочными последствиями.
H225：Легковоспламеняющаяся жидкость. Пары образуют с воздухом взрывоопасные смеси.
H304：Может быть смертельным при проглатывании и последующем попадании в дыхательные пути.
H336：Может вызывать сонливость или головокружение.
-
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.
P273：Избегать попадания в окружающую среду.
P301+P310：ПРИ ПРОГЛАТЫВАНИИ: Немедленно обратиться за медицинской помощью. Прополоскать рот.
P303+P361+P353：ПРИ ПОПАДАНИИ НА КОЖУ (или волосы): Снять/удалить немедленно всю загрязненную одежду. Промыть кожу водой.
P331：немедленно всю загрязненную одежду. Промыть кожу водой. Не вызывать рвоту!
МЕТИЛЦИКЛОГЕКСАН химические свойства, назначение, производство
Химические свойства
Methylcyclohexane, an alkene, is a colorless liquid with a faint benzene-like odor. The odor threshold is 630 ppm (this is above the OEL).Физические свойства
Clear colorless, very flammable liquid with a faint odor similar to benzene or cyclohexane. An odor threshold concentration of 150 ppbv was reported by Nagata and Takeuchi (1990).Использование
Methylcyclohexane is used as a solvent and reagent in organic synthesis and polymer chemistry. It is a component of jet fuel and also used as correction fluid in certain consumer products. It acts as a starting material for toluene synthesisИспользование
Methylcyclohexane is an environmentally friendly coating, mainly used as solvent for ink, rubber, paint, varnish, oil and grease extraction solvent, chromatographic analysis standard substance, also can be used in organic synthesis and analytical reagents.Методы производства
Methylcyclohexane is separated by distillation from crude petroleum oils, and also produced by hydrogenation of toluene, reaction of benzene with methane, or acidic hydrocracking of polycyclic aromatics.Общее описание
A clear colorless liquid with a petroleum-like odor. Flash point 25°F. Less dense than water and insoluble in water. Vapors heavier than air.Реакции воздуха и воды
Highly flammable. Insoluble in water.Профиль реактивности
Saturated aliphatic hydrocarbons, such as Methylcyclohexane, may be incompatible with strong oxidizing agents like nitric acid. Charring of the hydrocarbon may occur followed by ignition of unreacted hydrocarbon and other nearby combustibles. In other settings, aliphatic saturated hydrocarbons are mostly unreactive. They are not affected by aqueous solutions of acids, alkalis, most oxidizing agents, and most reducing agents.Опасность
Flammable, dangerous fire risk. Lowerexplosive limit 1.2% in air. Upper respiratory tractirritant, central nervous system impairment, liverand kidney damage.Угроза здоровью
Harmful if inhaled or swallowed. Vapor or mist is irritating to the eyes, mucous membrane and upper respiratory tract and skin. Narcotic effects and dermititis.Пожароопасность
Special Hazards of Combustion Products: Vapor may travel considerable distance to a source of ignition and flashback containing explosion may occur during fire conditions. Forms explosive mixtures in air.Профиль безопасности
Moderately toxic by ingestion. Mildly toxic by inhalation and skin contact. This material does not cause irritation to the eyes and nose, and, even at the level of 500 ppm, exhbits only a very faint odor. Therefore, it cannot be said to have any warning properties. It is believed to be about three times as toxic as hexane, and has caused death by tetanic spasm in animals. In sublethal concentrations, it causes narcosis and anesthesia. Dangerous fire hazard and moderate explosion hazard when exposed to heat, flame, or oxidzers. To fight fire, use foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and fumes.Возможный контакт
Methylcyclohexane is used as a solvent for cellulose derivatives particularly with other solvents; and as an organic intermediate in organic synthesis. A component of jet fuel.Экологическая судьба
Biological. May be oxidized by microbes to 4-methylcyclohexanol, which may oxidize to give 4-methylcycloheptanone (Dugan, 1972).Photolytic. Based on a photooxidation rate constant 1.04 x 10-11 cm3/molecule?sec for the reaction of cyclohexane and OH radicals in the atmosphere at 298 K, the estimated lifetime of methylcyclohexane is 13 h (Altshuller, 1991).
Chemical/Physical. Complete combustion in air produces carbon dioxide and water vapor. Methycyclohexane will not hydrolyze in water because it does not contain a hydrolyzable functional group.
Complete combustion in air yields carbon dioxide and water. Incomplete combustion also yields carbon monoxide.
Перевозки
UN2296 Methylcyclohexane, Hazard Class: 3; Labels: 3-Flammable liquid.Методы очистки
Passage through a column of activated silica gel gives material transparent down to 220nm. It can also be purified by passage through a column of activated basic alumina, or by azeotropic distillation with MeOH, followed by washing out the MeOH with H2O, drying and distilling. Methylcyclohexane can be dried with CaSO4, CaH2 or sodium. It has also been purified by shaking with a mixture of conc H2SO4 and HNO3 in the cold, washing with H2O, drying with CaSO4 and fractionally distilling it from potassium. Percolation through a Celite column impregnated with 2,4-dinitrophenylhydrazine (DNPH), phosphoric acid and H2O (prepared by grinding 0.5g DNPH with 6mL 85% H3PO4, then mixing with 4mL of distilled H2O and 10g of Celite) removes carbonyl-containing impurities. [Cowan et al. J Chem Soc 1865 1939, Beilstein 5 III 65, 5 IV 94.]Несовместимости
Vapor may form explosive mixture with air. 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. Attacks some plastics, rubber and coatingsУтилизация отходов
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.МЕТИЛЦИКЛОГЕКСАН запасные части и сырье
МЕТИЛЦИКЛОГЕКСАН поставщик
| поставщик | телефон | страна | номенклатура продукции | благоприятные условия | |
|---|---|---|---|---|---|
| +86-18678179670 +86-18615116763 |
China | 101 | 58 | ||
| +86 13288715578 +8613288715578 |
China | 12459 | 58 | ||
| +86-17531190177; +8617531190177 |
China | 6011 | 58 | ||
| +86-19930503253; +8619930503252 |
China | 5838 | 58 | ||
| +86-371-86557731 +86-13613820652 |
China | 20314 | 58 | ||
| +86-0371-55170693 +86-19937530512 |
China | 21670 | 55 | ||
| 008657128800458; +8615858145714 |
China | 9337 | 55 | ||
| +86-531-88989536 +86-15508631887 |
China | 2967 | 58 | ||
| +86-19930503282 | China | 8826 | 58 | ||
| +86-592-6051114 +8618959220845 |
China | 6387 | 58 |