Валеральдегид
- английское имяValeraldehyde
- CAS №110-62-3
- CBNumberCB9210837
- ФормулаC5H10O
- мольный вес86.13
- EINECS203-784-4
- номер MDLMFCD00007026
- файл Mol110-62-3.mol
химическое свойство
| Температура плавления | -92 °C |
| Температура кипения | 103 °C |
| плотность | 0.81 g/mL at 25 °C(lit.) |
| давление пара | 36 hPa (20 °C) |
| FEMA | 3098 | VALERALDEHYDE |
| показатель преломления | n |
| Fp | 54 °F |
| температура хранения | Store at +2°C to +8°C. |
| растворимость | soluble in ethyl alcohol, ethyl ether, and other common organic solvents. |
| цвет | Colorless to Light yellow |
| Запах | at 1.00 % in dipropylene glycol. fermented bready fruity nutty berry |
| Odor Type | fermented |
| Порог?обнаружения?запаха? | 0.00041ppm |
| Пределы взрываемости | 1.7-6.8%(V) |
| Растворимость в воде | 14 g/L (20 ºC) |
| Чувствительный | Air Sensitive |
| Мерк | 14,9902 |
| Номер JECFA | 89 |
| БРН | 1616304 |
| Пределы воздействия | TLV-TWA 175 mg/m3 (50 ppm) (ACGIH and OSHA). |
| Диэлектрическая постоянная | 13.9（Ambient） |
| Стабильность | Stable. Highly flammable. Incompatible with strong oxidizing agents, acids, strong alkalies, strong reducing agents. |
| LogP | 1.5 at 25℃ and pH7 |
| Вещества, добавляемые в пищу (ранее EAFUS) | VALERALDEHYDE |
| Справочник по базе данных CAS | 110-62-3(CAS DataBase Reference) |
| Рейтинг продуктов питания EWG | 1 |
| FDA UNII | B975S3014W |
| Справочник по химии NIST | Pentanal(110-62-3) |
| Система регистрации веществ EPA | Pentanal (110-62-3) |
больше
| Коды опасности | F,Xi | |||||||||
| Заявления о рисках | 11-38-41-36/37/38 | |||||||||
| Заявления о безопасности | 16-26-33-39-37/39 | |||||||||
| РИДАДР | UN 2058 3/PG 2 | |||||||||
| OEB | A | |||||||||
| OEL | TWA: 50 ppm (175 mg/m3) (Aldehydes) | |||||||||
| WGK Германия | 1 | |||||||||
| RTECS | YV3600000 | |||||||||
| F | 10-23 | |||||||||
| Температура самовоспламенения | 428 °F | |||||||||
| Примечание об опасности | Irritant/Flammable/Air Sensitive | |||||||||
| TSCA | Yes | |||||||||
| Класс опасности | 3 | |||||||||
| Группа упаковки | II | |||||||||
| кода HS | 29121900 | |||||||||
| Банк данных об опасных веществах | 110-62-3(Hazardous Substances Data) | |||||||||
| Токсичность | LD50 orally in rats: 5.66 ml/kg (Smyth) | |||||||||
| 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
H319：При попадании в глаза вызывает выраженное раздражение.
H335：Может вызывать раздражение верхних дыхательных путей.
H317：При контакте с кожей может вызывать аллергическую реакцию.
H225：Легковоспламеняющаяся жидкость. Пары образуют с воздухом взрывоопасные смеси.
H332：Вредно при вдыхании.
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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.
P280：Использовать перчатки/ средства защиты глаз/ лица.
P303+P361+P353：ПРИ ПОПАДАНИИ НА КОЖУ (или волосы): Снять/удалить немедленно всю загрязненную одежду. Промыть кожу водой.
P304+P340+P312：ПРИ ВДЫХАНИИ: Свежий воздух, покой. Обратиться за медицинской помощью при плохом самочувствии.
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.
Валеральдегид химические свойства, назначение, производство
Описание
Valeraldehyde is one of the key volatile flavor compounds identified in cooked rice, beef fish meat and uncured ham. Its smell is described as fermented, bready, fruity, nutty, berry.It is an alkyl aldehyde used in flavoring Compounds, resin chemistry, rubber accelerators.Химические свойства
Valeraldehyde is a colorless flammable liquid with a strong acrid, pungent odor. At low levels, the taste is warm, slightly fruity and nut-like.The odor threshold is 0.028 ppm. Slightly soluble in water; soluble in alcohol and ether.Вхождение
Valeraldehyde is naturally occurring (e.g., plant volatile). Reported found among the constituents of several essential oils: Brazilian sassafras, Bulgarian rose, Bulgarian clary sage and others. Also in the distillates from leaves of various Eucalyptus species: E. cinereea, E. globulus, E. dives, E. maideni and E. hemilampra. Also reported found in fresh apple, banana, sweet cherry, black currant berries, fresh blackberry, Bantu beer, plum brandy, cardamom, coriander leaf, unprocessed rice, Bourbon vanilla, cooked shrimp, scallop, hog plum and clary sage.Использование
Valeraldehyde is mainly used for hydrogenation to Isoamyl alcohol and oxidation to valeric acid. It can also be used as a raw material for fragrances, resin chemistry, and rubber accelerators.прикладной
Valeraldehyde is used as a gaseous standard in the study of the sorptive loss pattern for volatile compounds.Valeraldehyde has been used to study its time-weighted average sampling using solid-phase microextraction (SPME) device.
Valeraldehyde is used in flavoring compounds and as a rubber accelerator.
Valeraldehyde is also used extensively as a natural and synthetic flavoring agent. It is used as a top note for flavor to give identity (fruity, nutty) on first impression and is a component of rose oil used to flavor foods, beverages and chewing tobacco (Furia, 1972; Rogers, 1981; NLM, 1996).
Valeraldehyde is mainly used as a chemical intermediate. As a starting material in industrial organic synthesis, it is hydrogenated to 1-pentanol, oxidized to valeric acid, and aminated to 1-aminopentane (Falbe et al., 1985; NLM, 1996).
Подготовка
Valeraldehyde can be prepared by oxidation of the corresponding alcohol, 1-pentanol or by reduction of n-valeric acid (Opdyke, 1979; Lewis, 1993). Valeraldehyde is one of a number of aliphatic aldehydes industrially prepared by the oxo process, which involves the reaction of olefins with carbon monoxide and hydrogen in the presence of a catalyst. Use of a cobalt carbonyl complex as catalyst required high pressure in an older process, which has been largely replaced by a low-pressure process based on rhodium complex catalysts, such as a tris (alkyldiarylphosphine) rhodium carbonyl hydride.Определение
ChEBI: Valeraldehyde is a saturated fatty aldehyde composed from five carbons in a straight chain. It has a role as a plant metabolite.Общее описание
A colorless liquid. Slightly soluble in water and less dense than water. Flash point 54°F. Vapors heavier than air. Used to make artificial flavorings and rubber.Реакции воздуха и воды
Highly flammable. Slightly soluble in water. Valeraldehyde may be sensitive to prolonged exposure to air.Профиль реактивности
Valeraldehyde is an aldehyde. Aldehydes are frequently involved in self-condensation or polymerization reactions. These reactions are exothermic; they are often catalyzed by acid. Aldehydes are readily oxidized to give carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Aldehydes can react with air to give first peroxo acids, and ultimately carboxylic acids. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The addition of stabilizers (antioxidants) to shipments of aldehydes retards autoxidation. Valeraldehyde is incompatible with oxidizing agents, strong bases and strong reducing agents.Угроза здоровью
n-Valeraldehyde is a moderate skin andeye irritant. At a high concentration theirritation may be severe; 100 mg/day wasseverely irritating on rabbits’ eyes. Pure liquidcaused severe irritation to guinea pigskin. The systemic toxicity of valeraldehydeis very low.LD50 value, skin (rabbits): 4857 mg/kg
LD50 value, oral (rats): 3200 mg/kg
Inhalation toxicity is very low. Exposure to4000 ppm for air was lethal to rats.
Пожароопасность
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.Профиль безопасности
Moderately toxic by ingestion. Mddly toxic by inhalation and s h contact. A severe eye and skin irritant. A very dangerous fire hazard when exposed to heat or flame. %%en heated to decomposition it emits acrid smoke and irritating fumes. See also ALDEHYDES.Возможный контакт
Valeraldehyde is used in food flavorings; in resin chemistry. It is also used in the acceleration of rubber vulcanization.Канцерогенность
n-Valeraldehyde caused chromosomal and DNA effects in mammalian cells in culture but was not mutagenic in an Ames bacterial test.Перевозки
UN2058 Valeraldehyde, Hazard Class: 3; Labels: 3-Flammable liquid.Методы очистки
Purify pentanal via the bisulfite derivative (see 2-butanone above for the preparation and decomposition of the bisulfite derivative). [Birrell & Trotman-Dickinson J Chem Soc 2059 1960, Beilstein 1 H 676, 1 IV 3268.] The 2,4-dinitrophenylhydrazone [2057-84-3] M 266.3 has m 103-105o (from EtOH). [Beilstein 15 III/IV 429.]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, caustics, amines.Утилизация 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.Валеральдегид запасные части и сырье
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