Chlortrifluormethan

Bezeichnung:Chlortrifluormethan

CAS-Nr75-72-9

Englisch Name:CHLOROTRIFLUOROMETHANE

CBNumberCB6202231

SummenformelCClF3

Molgewicht104.46

MOL-Datei75-72-9.mol

Synonyma

Chlortrifluormethan

CFC 13

Monochlortrifluormethan

Chlortrifluormethan physikalisch-chemischer Eigenschaften

Schmelzpunkt	-181°C
Siedepunkt	-81,4°C
Dichte	(-130℃)1.703g/cm3
Brechungsindex	1.1990
storage temp.	-70°C
EPA chemische Informationen	CFC-13 (75-72-9)

Sicherheit

Kennzeichnung gefährlicher	N
R-Sätze:	20-59
S-Sätze:	23-36/37/39-59
RIDADR	1022
TSCA	T
DOT Classification	2.2 (Nonflammable gas)
HazardClass	2.2
Giftige Stoffe Daten	75-72-9(Hazardous Substances Data)

Gefahreninformationscode (GHS)

CHLOROTRIFLUOROMETHANE Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
FARBLOSES, VERFLüSSIGTES GAS MIT CHARAKTERISTISCHEM GERUCH.
PHYSIKALISCHE GEFAHREN
Das Gas ist schwerer als Luft. Es kann sich in tiefer gelegenen Bereichen sammeln und den Luftsauerstoff verdrängen.
CHEMISCHE GEFAHREN
Zersetzung beim Verbrennen oder bei Kontakt mit heißen Oberflächen unter Bildung giftiger und ätzender Gase mit Chlorwasserstoff, Fluorwasserstoff und Phosgen. Unverträglich mit bestimmten Metallpulvern (Aluminium, Zink, Beryllium).
ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).
MAK: 1000 ppm, 4300 mg/m? Spitzenbegrenzung: überschreitungsfaktor II(8); Schwangerschaft: Gruppe D (DFG 2006).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation.
INHALATIONSGEFAHREN
Beim Entweichen aus dem Behälter kann das Gas die Luft verdrängen. Erstickungsgefahr in geschlossenen Räumen.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Möglich sind Auswirkungen auf das Herzkreislaufsystem mit nachfolgenden Funktionsstörungen. Exposition kann Bewusstseinstrübung verursachen (s.Anm.).
LECKAGE
Belüftung. Wasserstrahl NIEMALS auf die Flüssigkeit richten. Im Fall einer großen Menge verschütteten Materials: Persönliche Schutzausrüstung: Vollschutzanzug mit umgebungsluftunabhängigem Atemschutzgerät.
R-Sätze Betriebsanweisung:
R20:Gesundheitsschädlich beim Einatmen.
S-Sätze Betriebsanweisung:
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Beschreibung
Strictly speaking, fluorocarbon compounds contain only the elements carbon, fluorine, and sometimes hydrogen. However, in industrial applications such as refrigerants and aerosol propellants, the term fluorocarbon has been used to include compounds containing chlorine and bromine atoms, or both. These industrial products have somewhat similar chemical and physical properties. Their relatively inert character and wide range of vapor pressures and boiling points make them especially well suited as refrigerants in a variety of applications, blowing agents for plastic foams, and aerosols.
Chemische Eigenschaften
Colorless gas; ethereal odor. heavier than air. Nonflammable
Verwenden
The fluorocarbons covered in this monograph are widely used as refrigerants, polymer intermediates, and blowing agents in the manufacture of polymerized foams used in insulation and comfort cushioning. They are also used for making packaging foams, as well as aerosol propellants for products applied in foam or spray form, and fire extinguishing agents. Special mixtures of two or more fluorocarbons, or fluorocarbons and hydrocarbons, are often used to provide desired special properties in particular refrigeration or aerosol propellant applications.
While Tetrafluoromethane is also used as a low-temperature refrigerant gas, it is also widely used by the electronics industry as a dry etchant in microchip manufacture. It is blended with oxygen and used to desmear and etch-back "through holes" on printed circuit boards.
Verwenden
Dielectric and aerospace chemical, hardening of metals, pharmaceutical processing.
Allgemeine Beschreibung
CHLOROTRIFLUOROMETHANE is a colorless odorless gas. CHLOROTRIFLUOROMETHANE is shipped as a liquefied gas under its own vapor pressure. CHLOROTRIFLUOROMETHANE is noncombustible. CHLOROTRIFLUOROMETHANE can asphyxiate by the displacement of air. Contact with the liquid can cause frostbite. Exposure of the container to prolonged heat or fire may cause CHLOROTRIFLUOROMETHANE to rupture violently and rocket.
Reaktivität anzeigen
The reaction of aluminum with various halogenated hydrocarbons produces a self-sustaining reaction with sufficient heat to melt aluminum pieces, examples of other halogenated hydrocarbons are fluorotrichloromethane, dichlorodifluoromethane, chlorodifluoromethane, tetrafluoromethane. The vigor of the reaction appears to be dependent on the combined degree of fluorination and the vapor pressure, [Chem. Eng. News 39(27):44(1961)].
Hazard
Toxic by inhalation; slightly irritant.
Health Hazard
Exposure may cause nausea, dizziness, and headache, and rapid suffocation. Contact with skin may cause frostbite.
Brandgefahr
Special Hazards of Combustion Products: Toxic fumes of Cl and F
Materials Uses
The fluorocarbons are generally compatible with most of the common metals except at high temperatures. At elevated temperatures, the following metals resist fluorocarbon corrosion (and are named in decreasing order of their corrosive resistance): Inconel, stainless steel, nickel, steel, and bronze. Water or water vapor in fluorocarbon systems will corrode magnesium alloys or aluminum containing over 2 percent magnesium. These metals are not recommended for use with fluorocarbon systems in which water may be present.
Sicherheitsprofil
A mild irritant. Narcotic in high concentrations. Reacts violently with Al. When heated to decomposition it emits highly toxic fumes of Fand Cl-.
Physiological effects
The fluorocarbons used in industry generally have low levels of toxicity, and hazards related to their use are minimal. These compounds have been extensively studied by many investigators under a variety of conditions.
Lager
Use forced ventilation and local exhaust, or both, to prevent an accumulation of gas that could reduce the oxygen level to below 19.5%. Ensure good floor ventilation. Use a check valve or trap in the discharge line to prevent back flow into the cylinder. Where applicable, use a pressure-reducing regulator when connecting a cylinder to a low-pressure piping system. For flammable fluorocarbons, adherence to pertinent electrical standards is necessary. Personnel should not weld, solder, braze, or have an open flame of any type in atmospheres containing flammable or nonflammable fluorocarbons.
läuterung methode
Main impurities are CO2, O2, and N2. The CO2 is removed by passage through saturated aqueous KOH, followed by conc H2SO4. The O2 is removed using a tower packed with activated copper on Kieselguhr at 200o, and the gas is dried over P2O5. [Miller & Smyth J Am Chem Soc 79 20 1957, Beilstein 1 III 42, 1 IV 34.] TOXIC GAS.
GRADES AVAILABLE
Fluorocarbons are available for commercial and industrial use in various grades with essentially the same composition from one producer to another. Purities of most fluorocarbon products are a minimum of 99 volume percent. For special applications very high purity grades are available.

CHLOROTRIFLUOROMETHANE Upstream-Materialien And Downstream Produkte

75-72-9, CHLOROTRIFLUOROMETHANE Verwandte Suche:

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