Триэтилен гликол
- английское имяTriethylene glycol
- CAS №112-27-6
- CBNumberCB1698903
- ФормулаC6H14O4
- мольный вес150.17
- EINECS203-953-2
- номер MDLMFCD00002880
- файл Mol112-27-6.mol
химическое свойство
| Температура плавления | −7 °C(lit.) |
| Температура кипения | 125-127 °C0.1 mm Hg(lit.) |
| плотность | 1.124 g/mL at 20 °C(lit.) |
| плотность пара | 5.2 (vs air) |
| давление пара | <0.01 mm Hg ( 20 °C) |
| показатель преломления | n |
| Fp | 165 °C |
| температура хранения | Store below +30°C. |
| растворимость | H2O: 50 mg/mL at 20 °C, clear, colorless |
| пка | 14.06±0.10(Predicted) |
| форма | Viscous Liquid |
| цвет | Clear very slightly yellow |
| Запах | Very mild, sweet. |
| РН | 5.5-7.0 (25℃, 50mg/mL in H2O) |
| Пределы взрываемости | 0.9-9.2%(V) |
| Растворимость в воде | SOLUBLE |
| Чувствительный | Hygroscopic |
| λмакс | λ: 260 nm Amax: 0.06 λ: 280 nm Amax: 0.03 |
| Мерк | 14,9670 |
| БРН | 969357 |
| Диэлектрическая постоянная | 2.4（25℃） |
| Стабильность | Stable. Combustible. Incompatible with strong oxidizing agents. |
| ИнЧИКей | ZIBGPFATKBEMQZ-UHFFFAOYSA-N |
| LogP | -1.75 at 25℃ |
| Непрямые добавки, используемые в веществах, контактирующих с пищевыми продуктами | TRIETHYLENE GLYCOL |
| FDA 21 CFR | 175.105; 175.300; 177.1200; 178.3740; 178.3910 |
| Справочник по базе данных CAS | 112-27-6(CAS DataBase Reference) |
| Рейтинг продуктов питания EWG | 1-4 |
| FDA UNII | 3P5SU53360 |
| Справочник по химии NIST | Triethylene glycol(112-27-6) |
| Система регистрации веществ EPA | Triethylene glycol (112-27-6) |
больше
| Коды опасности | Xi | |||||||||
| Заявления о рисках | 36/37/38 | |||||||||
| Заявления о безопасности | 26-36 | |||||||||
| WGK Германия | 1 | |||||||||
| RTECS | YE4550000 | |||||||||
| Температура самовоспламенения | 699 °F | |||||||||
| TSCA | Yes | |||||||||
| кода HS | 29094919 | |||||||||
| Банк данных об опасных веществах | 112-27-6(Hazardous Substances Data) | |||||||||
| Токсичность | LD50 in mice, rats (g/kg): 21, 15-22 orally; 7.3-9.5, 11.7 i.v. (Stenger) | |||||||||
| NFPA 704: |
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рисовальное письмо(GHS)
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рисовальное письмо(GHS)
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сигнальный язык
предупреждение
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оператор предупредительных мер
P264：После работы тщательно вымыть кожу.
Триэтилен гликол химические свойства, назначение, производство
Химические свойства
Triethylene glycol is a clear, colorless, viscous, stable liquid with a slightly sweetish odor. Soluble in water; immiscible with benzene, toluene, and gasoline. Combustible. Because it has two ether and two hydroxyl groups its chemical properties are closety related to ethers and primary alcohols. It is a good solvent for gums, resins, nitrocellulose, steam-set printing inks and wood stains. With a low vapor pressure and a high boiling point, its uses and properties are similar to those of ethylene glycol and diethylene glycol. Because it is an efficient hygroscopic agent it serves as a liquid desiccant for removing water from natural gas. It is also used in air conditioning systems designed to dehumidify air.Использование
triethylene glycol is a solvent prepared from ethylene oxide and ethylene glycol.Triethylene glycol can be used:
To prepare fatty acid gelators, which are used to gelate various edible and vegetable oils.
As a solvent to prepare superparamagnetic iron oxide nanoparticles for in situ protein purification.
As an absorbent agent in the subsea natural gas dehydration process.
Методы производства
Triethylene glycol, like diethylene glycol, is produced commercially as a by-product of ethylene glycol production. Its formation is favored by a high ethylene oxide to water ratio.Определение
ChEBI: Triethylene glycol is a poly(ethylene glycol) that is octane-1,8-diol in which the carbon atoms at positions 3 and 6 have been replaced by oxygen atoms. It has a role as a plasticiser. It is a poly(ethylene glycol), a diol and a primary alcohol.Общее описание
Triethylene Glycol (TEG) is a colorless liquid with a mild odor and is denser than water. It is a member of a series of dihydroxyalcohols. TEG's primary applications are derived from its ability to absorb moisture. It is utilized as a dehydrating agent in natural gas pipelines to eliminate water from the gas before reusing it in the system. Triethylene glycol also has mild disinfectant qualities and, when volatised, is used as an air disinfectant for virus and bacteria control.Профиль реактивности
Triethylene glycol is a ether-alcohol derivative. The ether being relatively unreactive. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert alcohols to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides. Reacts with strong oxidants. [Handling Chemicals Safely 1980. p. 932].Угроза здоровью
Under normal conditions of use, Triethylene Glycol (TEG) is not expected to cause irritation to the skin, eyes or respiratory tract. However, in applications where vapours or mists are created, inhalation may cause irritation to the respiratory system.No ceiling on worker exposure has been set by the American Conference of Governmental Hygienists (ACGIH), neither has a Workplace Exposure Limit been established for TEG. TEG is readily biodegradable, has a low potential to bioaccumulate and has low toxicity to aquatic organisms.
TEG is not flammable, unless preheated.
Профиль безопасности
Poison by intravenous route. Mildly toxic to humans by ingestion. Experimental reproductive effects. An eye and skin irritant. Many glycol ether compounds have dangerous human reproductive effects. Combustible when exposed to heat or flame. Can react with oxidizing materials. Explosive in the form of vapor when exposed to heat, flame, or spark. To fight fire, use alcohol foam, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS and GLYCOL ETHERS.Методы очистки
Dry the glycol with CaSO4 for 1 week, then it is repeatedly and very slowly fractionally distilled under a vacuum. Store it in a vacuum desiccator over P2O5. It is very hygroscopic. [Beilstein 1 IV 2400.]Триэтилен гликол запасные части и сырье
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Триэтилен гликол поставщик
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