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1,4-БУТАНДИОЛL
- английское имя1,4-Butanediol
- CAS №110-63-4
- CBNumberCB4452184
- ФормулаC4H10O2
- мольный вес90.12
- EINECS203-786-5
- номер MDLMFCD00002968
- файл Mol110-63-4.mol
Температура плавления | 16 °C (lit.) |
Температура кипения | 230 °C (lit.) |
плотность | 1.017 g/mL at 25 °C (lit.) |
плотность пара | 3.1 (vs air) |
давление пара | <0.1 hPa (20 °C) |
показатель преломления | n |
Fp | 135 °C |
температура хранения | Store below +30°C. |
пка | 14.73±0.10(Predicted) |
форма | Liquid |
цвет | Clear colorless |
Запах | Odorless |
РН | 7-8 (500g/l, H2O, 20℃) |
Пределы взрываемости | 1.95-18.3%(V) |
Вязкость | 83.2mm2/s |
Растворимость в воде | Miscible |
Чувствительный | Hygroscopic |
БРН | 1633445 |
Диэлектрическая постоянная | 30.0(30℃) |
Стабильность | Stable. Combustible. Incompatible with strong oxidizing agents, mineral acids, acid chlorides, acid anhydrides. |
ИнЧИКей | WERYXYBDKMZEQL-UHFFFAOYSA-N |
LogP | -0.88 at 25℃ |
Непрямые добавки, используемые в веществах, контактирующих с пищевыми продуктами | 1,4-BUTYLENE GLYCOL |
FDA 21 CFR | 175.105; 175.300; 177.1680 |
Справочник по базе данных CAS | 110-63-4(CAS DataBase Reference) |
Рейтинг продуктов питания EWG | 1 |
FDA UNII | 7XOO2LE6G3 |
Справочник по химии NIST | 1,4-Butanediol(110-63-4) |
Система регистрации веществ EPA | 1,4-Butanediol (110-63-4) |
Информация о косметике | Butylene Glycol |
Коды опасности | Xn | |||||||||
Заявления о рисках | 22-67 | |||||||||
Заявления о безопасности | 36-23-24/25 | |||||||||
WGK Германия | 1 | |||||||||
RTECS | EK0525000 | |||||||||
Температура самовоспламенения | 698 °F | |||||||||
TSCA | Yes | |||||||||
кода HS | 29053980 | |||||||||
Банк данных об опасных веществах | 110-63-4(Hazardous Substances Data) | |||||||||
Токсичность | LD50 orally in Rabbit: 1525 mg/kg LD50 dermal Rabbit > 2000 mg/kg | |||||||||
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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вредная бумага
H302:Вредно при проглатывании.
H336:Может вызывать сонливость или головокружение.
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оператор предупредительных мер
P261:Избегать вдыхания пыли/ дыма/ газа/ тумана/ паров/ аэрозолей.
P264:После работы тщательно вымыть кожу.
P270:При использовании продукции не курить, не пить, не принимать пищу.
P271:Использовать только на открытом воздухе или в хорошо вентилируемом помещении.
P301+P312:ПРИ ПРОГЛАТЫВАНИИ: Обратиться за медицинской помощью при плохом самочувствии.
P304+P340+P312:ПРИ ВДЫХАНИИ: Свежий воздух, покой. Обратиться за медицинской помощью при плохом самочувствии.
1,4-БУТАНДИОЛL химические свойства, назначение, производство
Химические свойства
1,4-butanediol (1,4-BD) is a colorless, viscous liquid derived from butane by placement of alcohol groups at each end of its molecular chain and is one of four stable isomers of butanediol.the hydroxyl function of each end group of the Butanediol reacts with different mono- and bifunctional reagents: for example with dicarboxylic acids to polyesters, with diisocyanates to polyurethanes, or with phosgene to polycarbonates. 1.4-Butanediol (BDO) is a high-quality intermediate. BDO and its derivatives are widely used for producing plastics, solvents, electronic chemicals and elastic fibers. Additionally BDO is also a building block for the synthesis of polyesterpolyols and polyetherpolyols. BASF is the most significant producer of 1,4-Butanediol and its derivatives worldwide.Использование
- Butanediol and its derivatives is used in a broad spectrum of applications in the chemical industry; amongst others in the manufacturing of technical plastics, polyurethanes, solvents, electronic chemicals and elastic fibres.
- 1,4-Butanediol is used in the synthesis of epothilones, a new class of cancer drugs. Also used in the stereoselective synthesis of (-)-Brevisamide.
- 1,4-Butanediol's largest use is within tetrahydrofuran (THF) production, used to make polytetramethylene ether glycol, which goes mainly into spandex fibers, urethane elastomers, and copolyester ethers.
- It is commonly used as a solvent in the chemical industry to manufacture gamma-butyrolactone and elastic fibers like spandex.
- It is used as a cross-linking agent for thermoplastic urethanes, polyester plasticizers, paints and coatings.
- It undergoes dehydration in the presence of phosphoric acid yielded teterahydrofuran, which is an important solvent used for various applications.
- It acts an intermediate and is used to manufacture polytetramethylene ether glycol (PTMEG), polybutylene terephthalate (PBT) and polyurethane (PU).
- It finds application as an industrial cleaner and a glue remover.
- 1,4-butanediol is also used as a plasticiser (e.g. in polyesters and cellulosics), as a carrier solvent in printing ink, a cleaning agent, an adhesive (in leather, plastics, polyester laminates and polyurethane footwear), in agricultural and veterinary chemicals and in coatings (in paints, varnishes and films).
Методы производства
Methods of manufacturing:The most prevalent 1,4-BD production route worldwide is BASF's Reppe process, which reacts acetylene and formaldehyde. Acetylene reacts with two equivalents of formaldehyde to form 1,4-butynediol, also known as but-2-yne- 1,4-diol. Hydrogenation of 1,4-butynediol gives 1,4-butanediol. 1,4-BD is also made on a large industrial scale by continuous hydrogenation of the 2-butyne- 1,4-diol over modified nickel catalysts. The one-stage flow process is carried out at 80 - 160 deg C and 300 bar.
Mitsubishi uses a three-step process:
(1) the catalytic reaction of butadiene and acetic acid yields 1,4-diacetoxy-2-butene;
(2) subsequent hydrogenation gives 1,4-diacetoxybutane; and
(3) hydrolysis leads to 1,4-butanediol.
Общее описание
Odorless colorless liquid or solid (depending upon temperature).Реакции воздуха и воды
Highly flammable. 1,4-Butanediol is hygroscopic. Water soluble.Профиль реактивности
1,4-Butanediol is heat and light sensitive. 1,4-Butanediol reacts with acid chlorides, acid anhydrides and chloroformates; reacts with oxidizing agents and reducing agents. 1,4-Butanediol is incompatible with isocyanates and acids; also incompatible with peroxides, perchloric acid, sulfuric acid, hypochlorous acid, nitric acid, caustics, acetaldehyde, nitrogen peroxide and chlorine.Опасность
Toxic by ingestion.Угроза здоровью
The acute toxic effects are mild. 1,4-Butanediolis less toxic than its unsaturate analogs,butenediol and the butynediol. The oralLD50 value in white rats and guinea pigsis ~2 mL/kg. The toxic symptoms fromingestion may include excitement, depressionof the central nervous system, nausea, anddrowsiness.Пожароопасность
Nonflammable liquid, flash point (open cup) 121°C.Профиль безопасности
A human poison by an unspecified route. Moderately toxic byingestion and intraperitoneal routes. Human systemic effects: altered sleep time. Combustible when exposed to heat or flame. To fight fire, use alcohol foam, mist, foam, CO2, dry chemical. Incompatible with oxidizing materials. When heated to decomposition it emits acrid smoke and fumes.Растворимость в воде
1,4-Butanediol is soluble in water, alcohols, esters, ketones, glycol ethers and glycol ether acetates (Butanediols, Butenediol, and Butynediol).Методы очистки
Distil the glycol and store it over Linde type 4A molecular sieves, or crystallise it twice from anhydrous diethyl ether/acetone, and redistil it. It has been recrystallised from the melt and doubly distilled in vacuo in the presence of Na2SO4. [Beilstein 1 IV 2515.]1,4-БУТАНДИОЛL запасные части и сырье
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