Основные атрибуты  химическое свойство Информация о безопасности химические свойства, назначение, производство MSDS запасные части и сырье поставщик Обзор
1,2-Дихлорбензол структурированное изображение

1,2-Дихлорбензол

  • английское имя1,2-Dichlorobenzene
  • CAS №95-50-1
  • CBNumberCB9406935
  • ФормулаC6H4Cl2
  • мольный вес147
  • EINECS202-425-9
  • номер MDLMFCD00000535
  • файл Mol95-50-1.mol
химическое свойство
Температура плавления -15 °C
Температура кипения 179 °C
плотность 1.306 g/mL at 25 °C(lit.)
плотность пара 5.1 (vs air)
давление пара 1.2 mm Hg ( 20 °C)
показатель преломления n20/D 1.551
Fp 150 °F
температура хранения Store below +30°C.
растворимость 0.13g/l
форма Liquid
цвет Clear colorless to very slightly yellow
Запах Aromatic; characteristic aromatic.
Пределы взрываемости 2.2-12%(V)
Растворимость в воде 0.13 g/L (20 ºC)
λмакс λ: 296 nm Amax: 1.00
λ: 300 nm Amax: 0.30
λ: 305 nm Amax: 0.20
λ: 335 nm Amax: 0.05
λ: 375-400 nm Amax: 0.01
Мерк 14,3056
БРН 606078
констант закона Генри 1.92 at 25 °C (gas stripping-GC, Shiu and Mackay, 1997)
Пределы воздействия Ceiling 50 ppm (～300 mg/m3) (MSHA, OSHA, and NIOSH); IDLH 1700 ppm (NIOSH).
Диэлектрическая постоянная 7.5（20℃）
Стабильность Stable, but possibly light sensitive. Combustible. Incompatible with oxidizing agents, aluminium, aluminium alloys. Attacks some rubbers and plastics.
Стандарт первичной питьевой воды EPA MCL:0.6,MCLG:0.6
LogP 3.433 at 25℃
Справочник по базе данных CAS 95-50-1(CAS DataBase Reference)
Рейтинг продуктов питания EWG 6
FDA UNII 6PJ93I88XL
Справочник по химии NIST Benzene, 1,2-dichloro-(95-50-1)
МАИР 3 (Vol. Sup 7, 73) 1999
Система регистрации веществ EPA o-Dichlorobenzene (95-50-1)
больше
Заявления об опасности и безопасности
Коды опасности Xn,N,Xi,F,T
Заявления о рисках 22-36/37/38-50/53-67-66-52/53-36-11-39/23/24/25-23/24/25-51/53
Заявления о безопасности 9-16-26-60-61-23-45-36/37-7
РИДАДР UN 1993 3/PG 2
OEL Ceiling: 50 ppm (300 mg/m3)
WGK Германия 3
RTECS CZ4500000
Температура самовоспламенения 640 °C
TSCA Yes
Класс опасности 6.1
Группа упаковки III
кода HS 29036100
Банк данных об опасных веществах 95-50-1(Hazardous Substances Data)
Токсичность LD50 orally in Rabbit: 500 mg/kg LD50 dermal Rabbit > 10000 mg/kg
ИДЛА 200 ppm
NFPA 704:
2
2 0

рисовальное письмо(GHS)

  • рисовальное письмо(GHS)

    GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms

  • сигнальный язык

    опасность

  • вредная бумага

    H319：При попадании в глаза вызывает выраженное раздражение.

    H411：Токсично для водных организмов с долгосрочными последствиями.

    H225：Легковоспламеняющаяся жидкость. Пары образуют с воздухом взрывоопасные смеси.

    H336：Может вызывать сонливость или головокружение.

  • 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.

    P240：Заземлить и электрически соединить контейнер и приемное оборудование.

    P241：Использовать взрывобезопасное оборудование и освещение.

    P273：Избегать попадания в окружающую среду.

    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.

1,2-Дихлорбензол MSDS

1,2-Дихлорбензол химические свойства, назначение, производство

Химические свойства

1,2-Dichlorobenzene (DCB, o-Dichlorobenzene, ODB, Orthodichlorobenzene), C6H4Cl2, is a colorless to pale yellow liquid with a pleasant aromatic odor. It is a combustible liquid and can form explosive mixtures with air at or above 151°F. Combustion and thermal decomposition products include hydrogen chloride gas, phosgene and chloro-carbons. Its flammable (explosive) limits are as follows: Lower 2.2%, Upper 9.2%.

Физические свойства

Clear, colorless to pale yellow liquid with a pleasant, aromatic, grassy or vegetable-type odor. At 40 °C, the lowest concentration at which an odor was detected was 200 μg/L. At 25 °C, the lowest concentration at which a taste was detected was 200 μg/L (Young et al., 1996). A detection odor threshold concentration of 4.2 mg/m3 (699 ppbv) was reported by Punter (1983).

Использование

1,2-Dichlorobenzene is used as a solvent; asa fumigant; as an insecticide for termites;as a degreasing agent for metals, wool, andleather; and as a heat transfer medium.

Методы производства

1,2-Dichlorobenzene is produced by reacting liquid benzene with gaseous chlorine in the presence of a catalyst at moderate temperature and atmospheric pressure.
Dichlorobenzenes are primarily produced by the chlorination of benzene in the presence of a catalyst (FeCl3 or AlCl3) although there are other possible synthetic routes. The two commercially important isomers are the ortho- and para-dichlorobenzenes.

Определение

ChEBI: 1,2-dichlorobenzene is a dichlorobenzene carrying chloro substituents at positions 1 and 2. It has a role as a hepatotoxic agent and a metabolite.

Общее описание

A clear colorless liquid with a pleasant odor. Denser than water and insoluble in water. Flash point 150°F. Toxic by inhalation and ingestion. Used to make other chemicals, solvents, fumigants and insecticides and for many other uses.

Реакции воздуха и воды

Insoluble in water.

Профиль реактивности

1,2-Dichlorobenzene is sensitive to prolonged exposure to light. 1,2-Dichlorobenzene can react vigorously with oxidizers. 1,2-Dichlorobenzene is incompatible with aluminum and aluminum alloys. 1,2-Dichlorobenzene attacks some forms of plastics, rubber and coatings. .

Угроза здоровью

1,2-Dichlorobenzene exhibits low acute toxi city by inhalation, ingestion, and skin absorp tion. It is more toxic than chlorobenzene.The symptoms are lacrimation, depression ofcentral nervous system, anesthesia, and liverdamage. Lethal concentration in rats for a7-hour exposure period is in the range of800 ppm. The oral LD50 value in rabbits is500 mg/kg. There is no evidence of carcino genicity in animals.

Пожароопасность

Special Hazards of Combustion Products: Poisonous vapors including hydrogen chloride gas, chlorocarbons, chlorine

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: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Профиль безопасности

Poison by ingestion and intravenous routes. Moderately toxic by inhalation and intraperitoneal routes. An experimental teratogen. Other experimental reproductive effects. An eye, skin, and mucous membrane irritant. Causes liver and hdney injury. Questionable carcinogen. Mutation data reported. A pesticide. Flammable when exposed to heat or flame. Can react vigorously with oxidizing materials. To fight fire, use water, foam, CO2, or dry chemical. Slow reaction with aluminum may lead to explosion during storage in a sealed aluminum container. When heated to decomposition it emits toxic fumes of Cl-. See also CHLOROBENZENE and CHLORINATED HYDROCARBONS, AROMATIC.

Возможный контакт

The major uses of o-DCB are as a process solvent in the manufacturing of toluene diisocyanate and as an intermediate in the synthesis of dyestuffs, herbicides, and degreasers. p-Dichlorbenzene is used primarily as a moth repellant, a mildew control agent; space deodorant; and in insecticides, which accounts for 90% of the total production of this isomer. Information is not available concerning the production and use of m-DCB. However, it may occur as a contaminant of o-or p-DCB formulations. Both o-and p-isomers are produced almost entirely as by-products during the production of monochlorobenzene

Методы очистки

Contaminants may include the p-isomer and trichlorobenzene [Suslick et al. J Am Chem Soc 106 4522 1984]. It should be shaken with conc or fuming H2SO4, washed with water, dried with CaCl2, and distilled from CaH2 or sodium in a glass-packed column. Low conductivity material (ca 10-10 mhos) has been obtained by refluxing with P2O5, fractionally distilling and passing it through a column packed with silica gel or activated alumina: it is stored in a dry-box under N2 or with activated alumina. [Beilstein 5 IV 654.]

Несовместимости

1,2-Dichlorobenzene forms hydrogen chloride gas when in the presence of strong oxidizers or chemically active metals like aluminum, or when heated to decomposition (HSDB 2007).

Утилизация отходов

Incineration, preferably after mixing with another combustible fuel. Care must be exercised to assure complete combustion to prevent the formation of phosgene. An acid scrubber is necessary to remove the halo acids produced. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal

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