Трихлорацетальдегид химические свойства, назначение, производство
Химические свойства
Chloral is a combustible, oily liquid with a
pungent irritating odor.
Использование
manufacture of chloral hydrate, DDT.
Методы производства
Chloral can be prepared by action of Cl2 on ethanol, chlorination of acetaldehyde, oxidation of 1,1,2-trichloroethylene in the presence of a catalyst (FeCl3, AlCl3, TiCl4 or SbCl3, and by reaction of CCl4 with formaldehyde.
Определение
A colorless liquid aldehyde made by chlorinating
ethanal. It was used to make the insecticide
DDT. It can be hydrolyzed to give 2,2,2-
trichloroethanediol (chloral hydrate,
CCl3CH(OH)2). Most compounds with
two –OH groups on the same carbon atom
are unstable. However, in this case the effect of the three chlorine atoms stabilizes
the compound. It is used as a sedative.
Общее описание
A colorless oily liquid with a penetrating odor. Reacts with water and denser than water. Contact may irritate skin, eyes and mucous membranes. Toxic by ingestion and inhalation. Used to make pesticides.
Реакции воздуха и воды
Chloral is sensitive to exposure to moisture and light. Soluble in water. Chloral reacts with water to form chloral hydrate.
Профиль реактивности
Chloral reacts with water to form chloral hydrate. Chloral polymerizes under the influence of light and in the presence of sulfuric acid forming a white solid trimer called metachloral.
Опасность
Toxic by ingestion. Probable carcinogen.
Угроза здоровью
INHALATION: Sore throat, shortness of breath, drowsiness, irritation of respiratory tract, unconsciousness. EYES: Redness, pain and blurred vision. SKIN: Redness and pain. INGESTION: Dizziness, drowsiness, nausea, and unconsciousness. Acute hazard: Poison may be fatal if inhaled, swallowed, or absorbed through skin.
Профиль безопасности
A poison. Mutation
E data reported.
Возможный контакт
Chloral is used as an intermediate
in the manufacture of such pesticides as DDT, methoxychlor, DDVP, naled, trichlorfon, and TCA. Chloral is
also used in the production of chloral hydrate; used as
a therapeutic agent with hypnotic, sedative, and narcotic
effects; used in a time prior to the introduction of
barbiturates
Перевозки
UN2811 Toxic solids, organic, n.o.s., Hazard
Class: 6.1; Labels: 6.1-Poisonous materials, Technical
Name Required.
Методы очистки
Distil chloral, then dry it by distilling through a heated column of CaSO4. [Beilstein 1 H 616, 1 I 328, 1 II 467, 1 III 2663, 1 IV 3142 for anhydr, 1 IV 3143 for hydrate.]
Несовместимости
Chloral hydrate reacts with strong bases
forming chloroform. Contact with acids, or exposure to
light may cause polymerization. Reacts with water, forming
chloral hydrate. Reacts with oxidizers, with a risk of fire or
explosions.
Утилизация отходов
Incineration after mixing with
another combustible fuel; care must be taken to assure complete combustion to prevent phosgene formation; an acid
scrubber is necessary to remove the halo acids produced.
Трихлорацетальдегид препаратная продукция и сырье
сырьё
препарат
TRIFORINE
ХЛОРАЛЬГИДРАТ
ethyl 3-(2,2-dichlorovinyl)-2,2-dimethyl-1-cyclopropanecarboxylate
ДИФЕНАМИД
2,2-дихлорацетамид
ТРИХЛОРАЦЕТАТ НАТРИЯ
2-AMINO-4,6-DIFLUOROBENZOIC ACID
Метоксихлор
N,N-Диметилформамид
3-Hydroxy-4-methoxybenzaldehyde
3-ИМИНО-2-ИНДОЛИНОН
Дихлорвос
4-Ethylbenzoic кислота
ЦИФЛУТРИН
Хлорэтан
п, п'-ДДТ
ХЛОРОФОРМ
Дихлоруксусная кислота
Tribromoacetaldehyde
2-фтор-5-йодтолуола
4-гидроксибензальдегида
АЛЛЕТРИН
Mecillinam
2,2,2-трихлорэтанол
1,2-Дихлорэтан
Trichlorfon
METHYL 3-(2,2-DICHLOROVINYL)-2,2-DIMETHYL-(1-CYCLOPROPANE)CARBOXYLATE
3-этокси-4-гидроксибензальдегид
2,2,2-трихлор-1-фенилэтилацетат
Ванилин
N,N,N'-TRIMETHYL-1,3-PROPANEDIAMINE
Перметрин
Acetofenate
Disperse Yellow 54
ЦИПЕРМЕТРИН
МЕТИЛХЛОРИД
Трихлоруксусная кислота