ДИХЛОРМОНОФТОРМЕТАН
- английское имяDichloromonofluoromethane
- CAS №75-43-4
- CBNumberCB8724331
- ФормулаCHCl2F
- мольный вес102.92
- EINECS200-869-8
- номер MDLMFCD00000825
- файл Mol75-43-4.mol
химическое свойство
| Температура плавления | -135°C |
| Температура кипения | 8.9°C |
| плотность | 1,354 g/cm3 |
| давление пара | 1,216 at 11.8 °C (NIOSH, 1997) |
| показатель преломления | 1.3540 |
| растворимость | Soluble in acetic acid, alcohol, and ether (Weast, 1986) |
| форма | Colorless gas |
| цвет | Colorless liquid or gas with an ether-like odor |
| Растворимость в воде | 0.7 wt % at 30 °C (NIOSH, 1997) |
| Пределы воздействия | NIOSH REL: TWA 10 ppm (40 mg/m3), IDLH 5,000 ppm; OSHA PEL: TWA 1,000 ppm (4,200 mg/m3); ACGIH TLV: TWA 10 ppm (adopted). |
| Диэлектрическая постоянная | 5.3（28℃） |
| FDA UNII | 7GAO4CRJ0B |
| Справочник по химии NIST | Methane, dichlorofluoro-(75-43-4) |
| Система регистрации веществ EPA | HCFC-21 (75-43-4) |
| Коды опасности | N | |||||||||
| Заявления о рисках | 59 | |||||||||
| Заявления о безопасности | 59 | |||||||||
| РИДАДР | 1029 | |||||||||
| OEB | A | |||||||||
| OEL | TWA: 10 ppm (40 mg/m3) | |||||||||
| RTECS | PA8400000 | |||||||||
| Класс опасности | 2.2 | |||||||||
| Банк данных об опасных веществах | 75-43-4(Hazardous Substances Data) | |||||||||
| Токсичность | LC50 (inhalation) for rats 49,900 ppm/4-h (quoted, RTECS, 1985). | |||||||||
| ИДЛА | 5,000 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
H280：Газ под давлением. Баллоны (емкости) могут взрываться при нагревании.
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оператор предупредительных мер
P410+P403：Беречь от солнечных лучей. Хранить в хорошо вентилируемом месте.
ДИХЛОРМОНОФТОРМЕТАН химические свойства, назначение, производство
Химические свойства
Dichlorofluoromethane is a heavy, colorless gas or liquid (below 9C) with a slight ethereal odor.Использование
Fire extinguishers; solvent; refrigerant.Общее описание
Dichloromonofluoromethane is a colorless, odorless gas. Dichloromonofluoromethane is shipped as a liquid under its own vapor pressure. Contact with the liquid may cause frostbite to unprotected skin. Dichloromonofluoromethane can asphyxiate by displacement of air. Exposure of the container to prolonged heat or fire may cause Dichloromonofluoromethane to rupture violently and rocket.Реакции воздуха и воды
Slightly soluble in water.Профиль реактивности
Dichloromonofluoromethane is incompatible with the following: Chemically-active metals such as sodium, potassium, calcium, powdered aluminum, zinc & magnesium; acid; acid fumes .Угроза здоровью
INHALATION: May cause giddiness, light-headedness, disorientation, nausea, vomiting, narcosis, cardiac dysrhythmias, hypotension, and death. SKIN: May cause frostbite or irritation. EYES: May cause irritation or cold injury.Пожароопасность
Special Hazards of Combustion Products: Toxic fumes of chlorine and fluorine may be produced in fire.Профиль безопасности
Mildly toxic by inhalation. Experimental reproductive effects. When heated to decomposition it emits very toxic fumes of Cl and F-.Возможный контакт
This material is used as a refrigerant and a propellant gas.Экологическая судьба
Chemical/Physical. The experimental hydrolysis half-life of dichlorofluoromethane in water at 25 °C and pH 7 is 234 yr (Jeffers and Wolfe, 1996).Перевозки
UN1029 Dichlorofluoromethane or Refrigerant gas R-21 Hazard Class: 2.2; Labels: 2.2-Nonflammable compressed gas. Cylinders must be transported in a secure upright position, in a well-ventilated truck. Protect cylinder and labels from physical damage. The owner of the compressed gas cylinder is the only entity allowed by federal law (49CFR) to transport and refill them. It is a violation of transportation regulations to refill compressed gas cylinders without the express written permission of the owner.Несовместимости
Reacts violently with chemically active metals: sodium, potassium, calcium, powdered aluminum; zinc, magnesium, alkali, alkaline earth. Reacts with acids or acid fumes producing highly toxic chlorine and fluorine fumes. Attacks some forms of plastics, rubber, and coatings.Утилизация отходов
Return refillable compressed gas cylinders to supplier. 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. Because of recent discovery of potential ozone decomposition in the stratosphere, this material should be released to the atmosphere only as a last resort