1-бутантиол
- английское имяButanethiol
- CAS №109-79-5
- CBNumberCB3225712
- ФормулаC4H10S
- мольный вес90.19
- EINECS203-705-3
- номер MDLMFCD00004905
- файл Mol109-79-5.mol
химическое свойство
| Температура плавления | −116 °C(lit.) |
| Температура кипения | 98 °C(lit.) |
| плотность | 0.842 g/mL at 25 °C(lit.) |
| плотность пара | 3.1 (vs air) |
| давление пара | 83 mm Hg ( 37.7 °C) |
| FEMA | 3478 | 1-BUTANETHIOL |
| показатель преломления | n |
| Fp | 55 °F |
| температура хранения | Store below +30°C. |
| растворимость | Slightly soluble in water, soluble in alcohol and oils. |
| пка | 11.51 at 25 °C (23.0% aqueous tert-butyl alcohol, Friedman et al., 1965) |
| форма | Liquid |
| цвет | Colorless |
| Удельный вес | 0.842 |
| Запах | Strong skunk-like. |
| Пределы взрываемости | 1.4-11.3%(V) |
| Odor Type | sulfurous |
| Порог?обнаружения?запаха? | 0.0000028ppm |
| Растворимость в воде | 0.60 g/100 mL. Slightly soluble |
| Чувствительный | Air Sensitive |
| Мерк | 14,1577 |
| Номер JECFA | 511 |
| БРН | 1730908 |
| констант закона Генри | (x 10-3 atm?m3/mol): 7.04 at 20 °C (approximate - calculated from water solubility and vapor pressure) |
| Пределы воздействия | NIOSH REL: 15-min ceiling 0.5 ppm (1.8 mg/m3), IDLH 500 ppm; OSHA PEL: TWA 10 ppm (35 mg/m3); ACGIH TLV: TWA 0.5 ppm (adopted). |
| Диэлектрическая постоянная | 4.9500000000000002 |
| Стабильность | Stable. Incompatible with oxidizing agents, bases, alkali metals. Highly flammable. May discolour on exposure to air. |
| LogP | 2.28 |
| Вещества, добавляемые в пищу (ранее EAFUS) | 1-BUTANETHIOL |
| Справочник по базе данных CAS | 109-79-5(CAS DataBase Reference) |
| Рейтинг продуктов питания EWG | 1 |
| FDA UNII | 77OY909F30 |
| Справочник по химии NIST | 1-Butanethiol(109-79-5) |
| Система регистрации веществ EPA | Butyl mercaptan (109-79-5) |
больше
| Коды опасности | F,Xn | |||||||||
| Заявления о рисках | 11-20/22-36/37/38-21/22-43 | |||||||||
| Заявления о безопасности | 16-23-26-36-9-36/37-33-37-37/39 | |||||||||
| РИДАДР | UN 2347 3/PG 2 | |||||||||
| OEL | Ceiling: 0.5 ppm (1.8 mg/m3) [15-minute] | |||||||||
| WGK Германия | 3 | |||||||||
| RTECS | EK6300000 | |||||||||
| F | 10-13-23 | |||||||||
| TSCA | Yes | |||||||||
| кода HS | 2930 90 98 | |||||||||
| Класс опасности | 3 | |||||||||
| Группа упаковки | II | |||||||||
| Банк данных об опасных веществах | 109-79-5(Hazardous Substances Data) | |||||||||
| Токсичность | LD50 orally in Rabbit: 1500 mg/kg | |||||||||
| ИДЛА | 500 ppm | |||||||||
| 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
H315：При попадании на кожу вызывает раздражение.
H319：При попадании в глаза вызывает выраженное раздражение.
H335：Может вызывать раздражение верхних дыхательных путей.
H317：При контакте с кожей может вызывать аллергическую реакцию.
H302+H332：Вредно при проглатывании или при вдыхании.
H225：Легковоспламеняющаяся жидкость. Пары образуют с воздухом взрывоопасные смеси.
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оператор предупредительных мер
P210：Беречь от тепла, горячих поверхностей, искр, открытого огня и других источников воспламенения. Не курить.
P280：Использовать перчатки/ средства защиты глаз/ лица.
P301+P312：ПРИ ПРОГЛАТЫВАНИИ: Обратиться за медицинской помощью при плохом самочувствии.
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.
1-бутантиол химические свойства, назначение, производство
Описание
Butane thiol, also known as butyl mercaptan, is a volatile, clear to yellowish liquid with a fetid (extremely foul-smelling) odor, commonly described as "skunk" odor. In fact, butanethiol is structurally similar to several major constituents of a skunk's defensive spray but is not actually present in the spray. The scent of butanethiol is so strong that the human nose can easily detect it in the air at concentrations as low as 10 parts per billion. The threshold level for 1-butane thiol is reported as 1.4 ppb.Химические свойства
Butanethiol is also known as butyl mercaptan. It is a volatile, highly flammable clear to yellowish liquid with an extremely foul-smelling, strong, garlic-, cabbageor skunk-like Butanethiol is also known as butyl mercaptan. It is a volatile, highly flammable clear to yellowish liquid with an extremely foul-smelling, strong, garlic-, cabbageor skunk-likeФизические свойства
Clear, colorless liquid with a strong garlic, cabbage, or pungent skunk-like odor. Odor threshold concentrations of 0.0028 ppbv and 3.7 μg/m3 (1.0 ppbv) were reported by Katz and Talbert (1930) and Nagata and Takeuchi (1990), respectively.Вхождение
Reported found in beef, cheddar cheese, raw chicken, cooked potatoes, beer and boiled eggs.Использование
Butanethiol is used as an industrial solvent , and as an intermediate for cotton defoliants. It is some times placed in the "stink bombs" and "stink perfumes" for prankster.Методы производства
Butanethiol is produced from n-Butanol plus Hydrogen sulfide over catalyst.Общее описание
Butanethiol is also known as butyl mercaptan. It is a volatile, clear to yellowish liquid with an extremely foul smell, with a strong, garlic-, cabbage-, or skunk-like odour. It is slightly oily in nature. Butanethiol is used as a chemical intermediate in the production of insecticides and herbicides. It is also used as a gas odorant.Реакции воздуха и воды
Highly flammable. Slightly soluble in water.Профиль реактивности
Butanethiol is incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. May liberate hydrogen sulfide upon decomposition or reaction with an acid. Incompatible with strong oxidizing agents [USCG, 1999].Опасность
Toxic by inhalation. Flammable, dangerous fire risk. Upper respiratory tract irritant.Угроза здоровью
Exposures to butanethiol cause adverse health effects and poisoning. The symptoms of poisoning in exposed workers include, but are not limited to, asthenia, muscular weak ness, malaise, sweating, nausea, vomiting, headache, restlessness, increased respiration, incoordination, muscular weakness, skeletal muscle paralysis in most cases, heavy to mild cyanosis, lethargy and/or sedation, respiratory depression followed by coma. Severe cases of poisoning lead to death of the exposed worker. In laboratory studies, animals given intraperitoneal and oral exposures of butane thiol survived near-lethal single doses. However, after 20 days post-treatment, animals showed pathological changes involving liver and kidney damage. The pathomorpho logical changes in the liver included cloudy swelling, fatty degeneration, and necrosis. Pathological changes in the kidneys included cloudy swelling, and the lungs displayed capillary engorgement, patchy edema, and occasional hemorrhageХимическая реактивность
Reactivity with Water No reaction; Reactivity with Common Materials: No reactions; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.Профиль безопасности
Poison by intraperitoneal route. Moderately toxic by ingestion. An eye irritant. Dangerous fire hazard by exposure to heat, flame, sparks, or powerful oxidizers. Reacts violently with HNO3. Incompatible with acids, acid fumes, oxidizing materials, heat, flame, and sparks. To fight fire, use alcohol foam. When heated to decomposition it emits toxic SOx. See also MERCAPTANS.Безопасность
Butanethiol is a very noxious and caustic chemical compound, and at sufficiently high concentrations, it produces serious health effects in both humans and animals, especially as a result of prolonged exposure. Higher concentrations can lead to unconsciousness and coma after prolonged exposure. Contact with the skin and mucous membranes causes burns, and contact with the eyes can lead to blurred vision or complete blindness.Inhalation may cause weakness, confusion, cough, dizziness, drowsiness, headache, nausea, vomiting, and shortness of breath. The substance irritates the eyes, the skin, and the respiratory tract. It may cause effects on the thyroid and the nervous system and could cause lowering of consciousness.
Возможный контакт
Butyl mercaptan is a flammable, colorless liquid with a strong, skunk-like odor. The Odor Threshold in air is 0.00097 ppm. Molecular weight 5 90.19; Specific gravity (H2O:1) 5 0.83 @ 20C; boiling point 5 99C;freezing/melting point 5 2116C; vapor pressure 5 35 mmHg @ 20C; 75 mmHg @ 34.5C; relative vapor density (air 5 1) 5 3.1; Flash point 5 2C (cc); Autoignition temperature # 225C. Explosive limits: LEL: 1.4%; UEL: 10.2%. Hazard identification (based on NFPA-704 M Rating System): Health 1; flammability 3; reactivity 0 ?. Slightly soluble in water; solubility 5 0.06% @ 20C.Экологическая судьба
Chemical/Physical. Releases toxic sulfur oxide fumes when heated to decomposition (Sax and Lewis, 1987).Перевозки
UN2347 Butyl mercaptan, Hazard Class: 3; Labels: 3—Flammable liquidМетоды очистки
Dry the thiol with CaSO4 or Na2SO4, then reflux it over magnesium, or dry with, and distil it from CaO, under nitrogen [Roberts & Friend J Am Chem Soc 108 7204 1986.] It has been separated from hydrocarbons by extractive distillation with aniline. Dissolve it also in 20% NaOH, extract with a small amount of *C6H6, then steam distil it until clear. The solution is then cooled and acidified slightly with 15% H2SO4. The thiol is distilled out, dried with CaSO4 or CaCl2, and fractionally distilled under N2 [Mathias & Filho J Phys Chem 62 1427 1958]. It has also been purified by precipitation as the lead mercaptide from alcoholic solution, then regeneration by adding dilute HCl to the residue followed by steam distillation. All operations should be carried out in a fume cupboard due to the TOXICITY and obnoxious odour of the thiol. [Beilstein 1 IV 1555.]Несовместимости
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. Attacks some plastics and rubberУтилизация отходов
Incineration (1093C) followed by scrubbing with a caustic solution.Меры предосторожности
Butanethiol decomposes an heading and release toxic fumes. It reacts with strong acids, bases and strong oxidants. Workers during handling of butanethiol should be very careful, should avoid open flames, sparkings, and smoking. Chemical vapor/air mixtures cause explosion ha3 and workers should wear protective cloathing, safety goggles and breathing apparatus and should work in good ventillation1-бутантиол запасные части и сырье
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