Дициклопентадиен
- английское имяDicyclopentadiene
- CAS №77-73-6
- CBNumberCB3854309
- ФормулаC10H12
- мольный вес132.2
- EINECS201-052-9
- номер MDLMFCD00078246
- файл Mol77-73-6.mol
химическое свойство
| Температура плавления | 33 °C(lit.) |
| Температура кипения | 170 °C(lit.) |
| плотность | 0.986 g/mL at 25 °C(lit.) |
| давление пара | 3 hPa (20 °C) |
| показатель преломления | n |
| Fp | 114 °F |
| температура хранения | Store below +30°C. |
| растворимость | Chloroform (Slightly), Methanol (Slightly) |
| форма | Liquid |
| цвет | Clear |
| Удельный вес | 0.968 |
| Запах | Camphor-like. |
| Пределы взрываемости | 0.8-6.3%(V) |
| Растворимость в воде | Immiscible with water. |
| Точка замерзания | 31.5℃ |
| Гидролитическая чувствительность | 4: no reaction with water under neutral conditions |
| Мерк | 14,2739 |
| БРН | 1904092 |
| Диэлектрическая постоянная | 2.4900000000000002 |
| Пределы воздействия | ACGIH: TWA 0.5 ppm; STEL 1 ppm NIOSH: TWA 5 ppm(30 mg/m3) |
| Стабильность | Stable at room temperature, but may form explosive peroxides if stored in contact with air. Incompatible with oxidizing agents. Decomposes on heating. Flammable. Mixtures of the vapour with air are explosive. |
| ИнЧИКей | HECLRDQVFMWTQS-UHFFFAOYSA-N |
| LogP | 3.300 (est) |
| Непрямые добавки, используемые в веществах, контактирующих с пищевыми продуктами | DICYCLOPENTADIENE |
| Справочник по базе данных CAS | 77-73-6(CAS DataBase Reference) |
| Рейтинг продуктов питания EWG | 2 |
| FDA UNII | 88Z4HUV8LI |
| Справочник по химии NIST | 4,7-Methano-1H-indene, 3a,4,7,7a-tetrahydro-(77-73-6) |
| Система регистрации веществ EPA | Dicyclopentadiene (77-73-6) |
больше
| Коды опасности | F,Xn,N,T | |||||||||
| Заявления о рисках | 11-20/22-36/37/38-51/53-23-22-10 | |||||||||
| Заявления о безопасности | 36/37-61-45-26 | |||||||||
| РИДАДР | UN 2048 3/PG 3 | |||||||||
| OEB | A | |||||||||
| OEL | TWA: 5 ppm (30 mg/m3) | |||||||||
| WGK Германия | 3 | |||||||||
| RTECS | PC1050000 | |||||||||
| Температура самовоспламенения | 503 °C | |||||||||
| TSCA | Yes | |||||||||
| Класс опасности | 3 | |||||||||
| Группа упаковки | III | |||||||||
| кода HS | 29021990 | |||||||||
| Банк данных об опасных веществах | 77-73-6(Hazardous Substances Data) | |||||||||
| Токсичность | LD50 orally in Rabbit: 353 mg/kg LD50 dermal Rabbit 4940 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
H315：При попадании на кожу вызывает раздражение.
H319：При попадании в глаза вызывает выраженное раздражение.
H335：Может вызывать раздражение верхних дыхательных путей.
H302：Вредно при проглатывании.
H410：Чрезвычайно токсично для водных организмов с долгосрочными последствиями.
H330：Смертельно при вдыхании.
H225：Легковоспламеняющаяся жидкость. Пары образуют с воздухом взрывоопасные смеси.
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оператор предупредительных мер
P210：Беречь от тепла, горячих поверхностей, искр, открытого огня и других источников воспламенения. Не курить.
P273：Избегать попадания в окружающую среду.
P301+P312：ПРИ ПРОГЛАТЫВАНИИ: Обратиться за медицинской помощью при плохом самочувствии.
P303+P361+P353：ПРИ ПОПАДАНИИ НА КОЖУ (или волосы): Снять/удалить немедленно всю загрязненную одежду. Промыть кожу водой.
P304+P340+P310：ПРИ ВДЫХАНИИ: Свежий воздух, покой. Немедленно обратиться за медицинской помощью.
P305+P351+P338：ПРИ ПОПАДАНИИ В ГЛАЗА: Осторожно промыть глаза водой в течение нескольких минут. Снять контактные линзы, если Вы ими пользуетесь и если это легко сделать. Продолжить промывание глаз.
Дициклопентадиен химические свойства, назначение, производство
Химические свойства
Dicyclopentadiene (DCPC) is a dimer of cyclopentadiene. First heating is used to copolymerize cyclopentadiene into dicyclopentadiene, dicyclopentadiene is separated from other light components (boiling point <45°C) by distillation, and then other required dienes, monocyclopentadiene are separated by solvent extraction. Alkene and saturated hydrocarbon components. High-purity dicyclopentadiene is a colorless crystal at room temperature. When it contains impurities, it is a light yellow oily liquid with a pungent camphor smell. It is insoluble in water and soluble in organic solvents such as alcohol and ether.cyclopentadiene, although a stable molecule, has a strong tendency to form the more stable dimer dicyclopentadiene. This dimerisation already takes place at room temperature and its rate rapidly increases with elevated temperatures. This reaction however is reversible too; dicyclopentadiene "cracks" at temperatures above 140°C to form two cyclopentadiene molecules.
Использование
Dicyclopentadiene is used in resins, particularly unsaturated polyester resins. It plays a major role in inks, adhesives and paints. It is also used as a monomer in polymerization reactions. It is a precursor for the preparation of endo-tetrahydrodicyclopentadiene, which reacts with aluminum chloride at higher temperature to give adamantine. It undergoes a retro-Diels-Alder reaction to yield cyclopentadiene, which acts as ligand in inorganic chemistry.Подготовка
Dicyclopentadiene is formed by the spontaneous dimerization of cyclopentadiene by Diels-Alder reaction insolution.Методы производства
Dicyclopentadiene is produced by recovery from hydrocarbon streams from high temperature cracked petroleum fractions. It is also a by-product of the coke oven industry. Cyclopentadiene polymerizes to dicyclopentadiene on standing.Общее описание
Dicyclopentadiene appears as a liquid with an acrid odor. Flash point 90°F. The vapors are irritating to the eyes and respiratory system. Subject to polymerization if subjected to heat for prolonged periods or if contaminated. If the polymerization takes place inside a container, the container may violently rupture. Insoluble in water. Density 8.2 lb / gal. Used in paints, varnishes, as an intermediate in insecticides, as a flame retardant in plastics.Реакции воздуха и воды
Highly flammable. Insoluble in water.Профиль реактивности
Dicyclopentadiene may react vigorously with oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. Can undergo exothermic polymierization reactions In the presence of various catalysts (such as acids) or initiators, if subjected to heat for prolonged periods, or if contaminated. Many undergo autoxidation upon exposure to the air to form explosive peroxides.Угроза здоровью
LIQUID OR SOLID: Irritating to skin and eyes.Пожароопасность
FLAMMABLE. Flashback along vapor trail may occur. Vapor may explode if ignited in an enclosed area.Химическая реактивность
Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: May occur in presence of acids, but not hazardous; Inhibitor of Polymerization: Not pertinent.Профиль безопасности
Poison by ingestion and intraperitoneal routes. Moderately toxic by inhalation. Mildly toxic by skin contact. A severe skin and moderate eye irritant. Dangerous fire hazard when exposed to heat or flame; can react with oxidizing materials. To fight fire, use alcohol foam. When heated to decomposition it emits acrid smoke and fumes.Возможный контакт
This compound is used in the manufacture of cyclopentadiene as a pesticide intermediate; in the production of ferrocene compounds; in paints, varnishes, and resin manufacture; in production of elastomers, resin systems, and polymers.Канцерогенность
Undiluted dicyclopentadiene caused minor irritation when applied to the skin of rabbits, and only trace injury occurred when instilled in the eye.Dicyclopentadiene has a camphorlike odor with a 100% recognition threshold of 0.02ppm; however, there may not be noticeable irritation below 10ppm.
The 2003 ACGIH threshold limit valuetime- weighted average (TLV-TWA) for dicyclopentadiene is 5ppm (27mg/m3).
Перевозки
UN2048 Dicyclopentadiene must carry a “FLAMMABLE LIQUID” label. It falls in Hazard Class 3Несовместимости
Forms explosive mixture with air above flash point. Depolymerizes at boiling point and forms two molecules of cyclopentadiene; unless inhibited and maintained under inert atmosphere to prevent polymerization. Violent reaction with strong oxidizers; strong acids; strong bases. Can accumulate static electrical charges, and may cause ignition of its vaporsУтилизация 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.Дициклопентадиен запасные части и сырье
Дициклопентадиен поставщик
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