Tetrachlormethan Produkt Beschreibung

Carbon tetrachloride Struktur
56-23-5
  • CAS-Nr.56-23-5
  • Bezeichnung:Tetrachlormethan
  • Englisch Name:Carbon tetrachloride
  • Synonyma:Kohlenstofftetrachlorid;Tetrachlormethan;Tetrachlorkohlenstoff;Tetra
    r10;CCm0;CCl4;R 10;R-10;CFC-10;freon10;Thawpit;Univerm;Carbona
  • CBNumber:CB6177304
  • Summenformel:CCl4
  • Molgewicht:153.82
  • MOL-Datei:56-23-5.mol
Tetrachlormethan physikalisch-chemischer Eigenschaften
  • Schmelzpunkt: :-23 °C
  • Siedepunkt: :76-77 °C(lit.)
  • Dichte :1.594 g/mL at 25 °C(lit.)
  • Dampfdichte :5.32 (vs air)
  • Dampfdruck :4.05 psi ( 20 °C)
  • Brechungsindex :n20/D 1.460(lit.)
  • Flammpunkt: :−2 °F
  • storage temp.  :2-8°C
  • Löslichkeit :Miscible with ethanol, benzene, chloroform, ether, carbon disulfide (U.S. EPA, 1985), petroleum ether, solvent naphtha, and volatile oils (Yoshida et al., 1983a).
  • Aggregatzustand :Liquid
  • Farbe :Clear colorless
  • Geruch (Odor) :Ethereal, sweet, pungent odor detectable at 140 to 584 ppm (mean = 252 ppm)
  • Relative polarity :0.052
  • Wasserlöslichkeit :0.8 g/L (20 ºC)
  • maximale Wellenlänge (λmax) :λ: 265 nm Amax: 1.0
    λ: 270 nm Amax: 0.30
    λ: 280 nm Amax: 0.07
    λ: 290 nm Amax: 0.02
    λ: 300-400 nm Amax: 0.01
  • Merck  :13,1826
  • BRN  :1098295
  • Henry's Law Constant :2.15 at 30 °C (headspace-GC, Sanz et al., 1997)
  • Expositionsgrenzwerte :NIOSH REL: STEL 1 hour 2 ppm, IDLH 200 ppm; OSHA PEL: TWA 10 ppm, C 25 ppm, 5-minute/4-hour peak 200 ppm; ACGIH TLV: TWA 5 ppm.
  • CAS Datenbank :56-23-5(CAS DataBase Reference)
  • NIST chemische Informationen :Carbon tetrachloride(56-23-5)
  • EPA chemische Informationen :Methane, tetrachloro-(56-23-5)
Sicherheit

Carbon tetrachloride Chemische Eigenschaften,Einsatz,Produktion Methoden

  • ERSCHEINUNGSBILD FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
  • PHYSIKALISCHE GEFAHREN Die Dämpfe sind schwerer als Luft.
  • CHEMISCHE GEFAHREN Bei Kontakt mit heißen Gegenständen oder Flammen Zersetzung unter Bildung giftiger und ätzender Rauche (ChlorwasserstoffICSC 0163, ChlordämpfeICSC 0126, PhosgenICSC 0007). Reagiert mit einigen Metallen wie Aluminium, Magnesium, Zink. Feuer- und Explosionsgefahr.
  • ARBEITSPLATZGRENZWERTE TLV: 5 ppm (als TWA), 10 ppm (als STEL) Hautresorption; Krebskategorie A2 (Verdacht auf krebserzeugende Wirkung beim Menschen); (ACGIH 2005).
    MAK: 0,5 ppm 3,2 mg/m?Spitzenbegrenzung: überschreitungsfaktor II(2); Hautresorption; Krebserzeugend Kategorie 4; Schwangerschaft: Gruppe C; (DFG 2006).
  • AUFNAHMEWEGE Aufnahme in den Körper durch Inhalation, über die Haut und durch Verschlucken.
  • INHALATIONSGEFAHREN Beim Verdampfen bei 20 °C kann sehr schnell eine gesundheitsschädliche Kontamination der Luft eintreten.
  • WIRKUNGEN BEI KURZZEITEXPOSITION WIRKUNGEN BEI KURZZEITEXPOSITION:
    Die Substanz reizt die Augen. Möglich sind Auswirkungen auf Leber, Nierenund Zentralnervensystem mit nachfolgender Bewusstlosigkeit. ärztliche Beobachtung notwendig.
  • WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION Wiederholter oder andauernder Hautkontakt kann Dermatitis hervorrufen. Möglicherweise krebserzeugend für den Menschen.
  • LECKAGE Ausgelaufene Flüssigkeit in abgedeckten Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen. NICHT in die Umwelt gelangen lassen. Persönliche Schutzausrüstung: Vollschutzanzug mit umgebungsluftunabhängigem Atemschutzgerät.
  • R-Sätze Betriebsanweisung: R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
    R40:Verdacht auf krebserzeugende Wirkung.
    R48/23:Giftig: Gefahr ernster Gesundheitsschäden bei längerer Exposition durch Einatmen.
    R52/53:Schädlich für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
    R59:Gefährlich für die Ozonschicht.
    R39/23/24/25:Giftig: ernste Gefahr irreversiblen Schadens durch Einatmen, Berührung mit der Haut und durch Verschlucken.
    R11:Leichtentzündlich.
  • S-Sätze Betriebsanweisung: S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
    S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
    S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
    S59:Informationen zur Wiederverwendung/Wiederverwertung beim Hersteller/Lieferanten erfragen.
    S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
  • Aussehen Eigenschaften CCl4. Farblose, charakteristisch riechende Flüssigkeit.
  • Gefahren für Mensch und Umwelt Heftige Reaktionen mit Alkalimetallen, Aluminium und Erdalkalimetallen sowie mit starken Basen. Außerdem gefährliche Reaktionen mit Dimethylformamid in Gegenwart von Eisen.
    Kann Krebs erzeugen. Sehr giftig beim Einatmen und bei Berührung mit der Haut. Irreversibler Schaden möglich.
    Tetrachlorkohlenstoff wirkt akut und chronisch als gefährliches Lebergift. Es wird sehr leicht durch die Haut aufgenommen. Konzentrierte Dämpfe führen zu Narkose und Atemstillstand. Geringere Konzentrationen verursachen allgemeines Unwohlsein, Kopfschmerzen, Brechreiz, Schwindel und Bewußtlosigkeit. Krämpfe sind sehr selten. Später finden sich Symptome von Leber- und Nierenschäden. Symptome der leichten Vergiftung sind: Kopfschmerzen, Schwindel, Erbrechen, Magenschmerzen, Appetitlosigkeit und Müdigkeit. Die orale Aufnahme zeigt neben Leibschmerzen mit u.U. blutigen Durchfällen sonst die gleichen Symptome. Alkohol auch Fette und Öle fördern die Resorption. Alkohol potenziert die Wirkung.
    Stark wassergefährdender Stoff (WGK 3).
  • Schutzmaßnahmen und Verhaltensregeln Nur im Abzug arbeiten. Dämpfe nicht einatmen.
    Latex- und Neopren-Schutzhandschuhe sind nicht beständig gegen Tetrachlorkohlenstoff. Kurzfristig: PE-Einmal-Schutzhandschuhe.
  • Verhalten im Gefahrfall Kleine Spritzer im Abzug verdampfen lassen. Bei Verschütten größerer Mengen evt. Bereich räumen, Hilfe herbeiholen. Mit Absorptionsmaterial, (z.B. Rench-Rapid) aufnehmen und als Sondermüll entsorgen.
    Tetrachlormethan brennt selbst nicht; Brandbekämpfung auf die Umgebung abstimmen.
    Atemschutz: Kombinationsfilter ABEK.
  • Erste Hilfe Nach Augenkontakt: Mit viel Wasser mindestens 15 Minuten bei geööfnetem Augenlid spülen. Augenarzt!
    Nach Einatmen: Frischluft. Arzt.
    Nach Verschlucken: Sofort Arzt!
    Nach Kleidungskontakt: Kontaminierte Kleidung sofort ausziehen.
    Ersthelfer: siehe gesonderten Anschlag

  • Sachgerechte Entsorgung Als Sondermüll (halogenhaltige Lösungsmittel) entsorgen.
  • Chemische Eigenschaften Carbon tetrachloride, CC14, also known as tetrachloromethane, perchloro methane, and benzinoform, is a colorless liquid with a boiling point of 77 °C (170 OF). It is used as a solvent for lacquers, resin, and rubbers,and as a dry cleaning agent.
  • Physikalische Eigenschaften Clear, colorless, heavy, watery liquid with a strong, sweetish, distinctive odor resembling ether. Odor threshold concentration in air ranged from 21.4 ppm (in a sampled derived from the chlorination of carbon disulfide) to 100.0 ppmv (dervived from the chlorination of methane) (Leonardos et al., 1969). An odor threshold of 4.68 ppmv was determined by Leonardos et al. (1969). A detection odor threshold concentration of 3,700 mg/m3 (584 ppmv) was experimentally determined by Dravnieks (1974). The average least detectable odor threshold concentrations in water at 60 °C and in air at 40 °C were 1.08 and 3.6 mg/L, respectively (Alexander et al., 1982).
  • Verwenden Carbon tetrachloride is used as a solvent, infire extinguishers, in dry cleaning, and in themanufacture of fluorocarbon propellents.
  • Verwenden As solvent for oils, fats, lacquers, varnishes, rubber waxes, resins; starting material in manufacture of organic Compounds. Pharmaceutic aid (solvent). Formerly used as dry cleaning agent, fire extinguisher and grain fumigant.
  • Definition ChEBI: A chlorocarbon that is methane in which all the hydrogens have been replaced by chloro groups.
  • Definition A colorless nonflammable liquid made by the chlorination of methane. Its main use is as a solvent.
  • Allgemeine Beschreibung A clear colorless liquid with a characteristic odor. Denser than water (13.2 lb / gal) and insoluble in water. Noncombustible. May cause illness by inhalation, skin absorption and/or ingestion. Used as a solvent, in the manufacture of other chemicals, as an agricultural fumigant, and for many other uses.
  • Air & Water Reaktionen Insoluble in water.
  • Reaktivität anzeigen Carbon tetrachloride is a commonly used liquid in fire extinguishers to combat small fires. Carbon tetrachloride has no flash point, Carbon tetrachloride is not flammable. However, when heated to decomposition, Carbon tetrachloride will emit fumes of extremely toxic phosgene and of hydrogen chloride. Forms explosive mixtures with chlorine trifluoride, calcium hypochlorite, decaborane, dinitrogen tetraoxide, fluorine. Forms impact-sensitive explosive mixtures with particles of many metals: lithium, sodium, potassium, beryllium, zinc, aluminum, barium. Vigorous exothermic reaction with allyl alcohol, boron trifluoride, diborane, disilane, aluminum chloride, dibenzoyl peroxide, potassium tert-butoxide, liquid oxygen, zirconium. [Bretherick, 5th ed., 1995, p. 666]. Potentially dangerous reaction with dimethylformamide or dimethylacetamide in presence of iron [Cardillo, P. et al., Ann. Chim. (Rome), 1984, 74, p. 129].
  • Health Hazard Carbon tetrachloride exhibits low acute tox icity by all routes of exposure. The acute poisoning effects include dizziness, fatigue,headache, nervousness, stupor, nausea, vom iting, diarrhea, renal damage, and liverinjury. The dosages that produce toxic act ions in animals vary with the species. Theoral LD50 values in rats, rabbits, and mice are2800, 5760, and 8263 mg/kg, respectively(NIOSH 1986).
    Ingestion of carbon tetrachloride can befatal to humans, death resulting from acuteliver or kidney necrosis. Chronic exposuremay cause liver and kidney damage. Expo sure to a 10-ppm concentration for severalweeks produced accumulation of fat in the liv ers of experimental animals (ACGIH 1986).Substances such as ethanol and barbituratescause potentiation of toxicity of carbon tetra chloride. Skin contact can cause dermatitis.
    Azri and coworkers (1990) have investi gated carbon tetrachloride–induced hepato toxicity in rat liver slices. Liver slices frommale rats were incubated and exposed tocarbon tetrachloride vapors, and the degreeof injury to cellular tissue was determined.Covalent binding of CCl4 radical to proteinsand lipid molecules in a slice caused the cel lular injury. The toxicity depended on thevapor concentration and the time of expo sure. Azri and coworkers reported furtherthat rats pretreated with phenobarbital weremore rapidly intoxicated even at a lower con centration of carbon tetrachloride vapors. Onthe other hand, pretreatment with allyliso propylacetamide inhibited the toxicity of car bon tetrachloride.
    Carbon tetrachloride is a suspected humancarcinogen. Oral and subcutaneous adminis tration of this compound in rats caused liverand thyroid cancers in the animals.
  • Health Hazard The acute toxicity of carbon tetrachloride is low to moderate. Inhalation of carbon tetrachloride can produce symptoms such as dizziness, headache, fatigue, nausea, vomiting, stupor, and diarrhea. This substance is a depressant of the central nervous system, and inhalation of high concentrations causes damage to the liver, heart, and kidneys. Exposure to 1000 to 2000 ppm for 30 to 60 min can be fatal to humans. Ingestion of carbon tetrachloride leads to similar toxic effects, and swallowing as little as 4 mL can be lethal. Carbon tetrachloride irritates the skin, and prolonged contact may cause dryness and cracking. This substance is also slowly absorbed through the skin. Carbon tetrachloride liquid and vapor are also irritating to the eyes. The odor of carbon tetrachloride does not provide adequate warning of the presence of harmful concentrations. Carbon tetrachloride shows carcinogenic effects in animal studies and is listed by IARC in Group 2B ("possible human carcinogen"). It is not classified as a "select carcinogen" according to the criteria of the OSHA Laboratory Standard. Prolonged or repeated exposure to this substance may result in liver and kidney damage. There is some evidence from animal studies that carbon tetrachloride may be a developmental and reproductive toxin in both males and females.
  • Brandgefahr Carbon tetrachloride is noncombustible. Exposure to fire or high temperatures may lead to formation of phosgene, a highly toxic gas.
  • Flammability and Explosibility Carbon tetrachloride is noncombustible. Exposure to fire or high temperatures may lead to formation of phosgene, a highly toxic gas.
  • Chemische Reaktivität 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.
  • Industrielle Verwendung Carbon tetrachloride is a clear, heavy liquid with a strong, aromatic odor. Its formula is CC14. It is produced in large quantities for use in the manufacturing of refrigerants and propellants for aerosol cans. It is also used as a feedstock in the synthesis of chlorofluorocarbons and other chemicals, in petroleum refining, pharmaceutical manufacturing, and general solvent use. Until the mid- 1960s, it was also widely used as a cleaning fluid, both in industry, where it served as a degreasing agent, and in the home, where it was used as a spot remover and in fire extinguishers.
    Carbon tetrachloride is a highly volatile liquid with a strong etherial odor similar to chloroform. It mixes sparingly with water and is not flammable. When heated to decomposition, it emits highly toxic fumes of phosgene and hydrogen chloride. There is strong evidence that the toxicity of carbon tetrachloride is dramatically increased by its interaction with alcohols, ketones, and a range of other chemicals.
    Carbon tetrachloride is known to deplete the ozone layer, where it is responsible for 17% of the ozone-destroying chlorine now in the stratosphere due to human activities. Carbon tetrachloride has a half-life of between 30 and 100 years.Its DOT Label is Poison, and its UN number is 1846.
  • Sicherheitsprofil Confirmed carcinogen with experimental carcinogenic, neoplastigenic, and tumorigenic data. A human poison by ingestion and possibly other routes. Poison by subcutaneous and intravenous routes. Mildly toxic by inhalation. Human systemic effects by inhalation and ingestion: nausea or vomiting, pupdlary constriction, coma, antipsychotic effects, tremors, somnolence, anorexia, unspecified respiratory system and gastrointestinal system effects. Experimental teratogenic and reproductive effects. An eye and skin irritant. Damages liver, kidneys, and lungs. Mutation data reported. A narcotic. Individual susceptibility varies widely. Contact dermatitis can result from skin contact. resembling that of chloroform, though not as strong. Following exposure to high concentrations, the victim may become unconscious, and, if exposure is not terminated, death can follow from respiratory fdure. The aftereffects following recovery from narcosis are more serious than those of delayed chloroform poisoning, usually taking the form of damage to the kidneys, liver, and lungs. Exposure to lower ppd6OM Carbon tetrachloride has a narcotic action concentrations, insufficient to produce unconsciousness, usually results in severe gastrointestinal upset and may progress to serious hdney and hepatic damage. The E kidney lesion is an acute nephrosis; the liver involvement consists of an acute degeneration of the central portions of the lobules. When recovery takes place, there may be no permanent dsability. Marked variation in individual susceptibdity to carbon tetrachloride exists; some persons appear to be unaffected by exposures that seriously poison their fellow workers. Alcoholism and previous liver and kidney damage seem to render the indwidual more susceptible. Concentrations on the order of 1000 to 1500 ppm are sufficient to cause symptoms if exposure continues for several hours. Repeated ddy exposure to such concentration may result in poisoning. Though the common form of poisoning following industrial exposure is usually one of gastrointestinal upset, which may be followed by renal damage, other cases have been reported in which the central nervous system has been affected, resulting in the production of polyneuritis, narrowing of the visual fields, and other neurologcal changes. Prolonged exposure to small amounts of carbon tetrachloride has also been reported as causing cirrhosis of the liver. Locally, a dermatitis may be produced following long or repeated contact with the liquid. The skin oils are removed and the skin becomes red, cracked, and dry. The effect of carbon tetrachloride on the eyes either as a vapor or as a liquid, is one of irritation with lachrymation and burning. Industrial poisoning is usually acute with malaise, headache, nausea, dminess, and confusion, which may be followed by stupor and sometimes loss of consciousness. Symptoms of liver and kidney damage may follow later with development of dark urine, sometimes jaundice and liver enlargement, followed by scanty urine, albuminuria, and renal casts; uremia may develop and cause death. Where exposure has been less acute, the symptoms are usually headache, dizziness, nausea, vomiting, epigastric distress, loss of appetite, and fatigue. Visual disturbances (blind spots, spots before the eyes, a visual "haze," and restriction of the visual fields), secondary anemia, and occasionally a slight jaundice may occur. Dermatitis may be noticed on the exposed parts. with particulates of many metals, e.g., aluminum (when ball milled or heated to 152' in a closed container), barium (bulk metal also reacts violently), beryllium, potassium (200 times more shock sensitive than mercury fulminate), potassium-sodium alloy (more sensitive than potassium), lithium, sodium, zinc (burns ready). Also forms explosive mixtures with chlorine trifluoride, calcium hypochlorite (heatsensitive), calcium dtsllicide
  • mögliche Exposition Carbon tetrachloride, and organochlorine, is used as a solvent for oils, fats, lacquers, varnishes, rubber, waxes, and resins. Fluorocarbons are chemically synthesized from it. It is also used as an azeotropic drying agent for spark plugs; a dry-cleaning agent; a fire extinguishing agent; a fumigant, and an anthelmintic agent. The use of this solvent is widespread, and substitution of less toxic solvents when technically possible is recommended.
  • Source Carbon tetrachloride is used in fumigant mixtures such as 1,2-dichloroethane (Granosan) because it reduces the fire hazard (Worthing and Hance, 1991).
  • Environmental Fate Biological. Carbon tetrachloride was degraded by denitrifying bacteria forming chloroform (Smith and Dragun, 1984). An anaerobic species of Clostridium biodegraded carbon tetrachloride by reductive dechlorination yielding trichloromethane, dichloromethane and unidentified products (G?lli and McCarty, 1989). Chloroform also formed by microbial degradation of carbon tetrachloride using denitrifying bacteria (Smith and Dragun, 1984).
    Carbon tetrachloride (5 and 10 mg/L) showed significant degradation with rapid adaptation in a static-culture flask-screening test (settled domestic wastewater inoculum) conducted at 25°C. Complete degradation was observed after 14 days of incubation (Tabak et al., 1981).
    Chemical/Physical. Under laboratory conditions, carbon tetrachloride partially hydrolyzed to chloroform and carbon dioxide (Smith and Dragun, 1984). Complete hydrolysis yielded carbon dioxide and hydrochloric acid (Kollig, 1993). Carbon tetrachloride slowly reacts with hydrogen sulfide in aqueous solution yielding carbon dioxide via the intermediate carbon disulfide. However, in the presence of two micaceous minerals (biotite and vermiculite) and amorphous silica, the rate of transformation increased. At 25°C and a hydrogen sulfide concentration of 1 mM, the half-lives for carbon tetrachloride were calculated to be 2,600, 160 and 50 days for the silica, vermiculite and biotite studies, respectively. In all three studies, the major transformation pathway is the formation of carbon disulfide which undergoes hydrolysis yielding carbon dioxide (81–86% yield) and hydrogen sulfide ions. Minor intermediates detected include chloroform (5–15% yield),carbon monoxide (1–2% yield) and a nonvolatile compound tentatively identified as formic acid (3–6% yield) (Kriegman-King and Reinhard, 1992).
    Anticipated products from the reaction of carbon tetrachloride with ozone or hydroxyl radicals in the atmosphere are phosgene and chloride radicals (Cupitt, 1980). Phosgene is hydrolyzed readily to hydrochloric acid and carbon dioxide (Morrison and Boyd, 1971).
    Matheson and Tratnyek (1994) studied the reaction of fine-grained iron metal in an anaerobic aqueous solution (15°C) containing carbon tetrachloride (151 μM). Initially, carbon tetrachloride underwent rapid dehydrochlorination forming chloroform, which further degraded to methylene chloride and chloride ions. The rate of reaction decreased with each dehydrochlorination step. However, after 1 hour of mixing, the concentration of carbon tetrachloride decreased from 151 to approximately 15 μM. No additional products were identified although the authors concluded that environmental circumstances may exist where degradation of methylene chloride may occur. They also reported that reductive dehalogenation of carbon tetrachloride and other chlorinated hydrocarbons used in this study appears to take place in conjunction with the oxidative dissolution or corrosion of the iron metal through a diffusion-limited surface reaction.
    The evaporation half-life of carbon tetrachloride (1 mg/L) from water at 25°C using a shallow-pitch propeller stirrer at 200 rpm at an average depth of 6.5 cm is 29 minutes (Dilling, 1977).
  • Lager Carbon tetrachloride should be handled in the laboratory using the "basic prudent practices".
  • Versand/Shipping UN1846 Carbon tetrachloride, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.
  • läuterung methode For many purposes, careful fractional distillation gives adequate purification. Carbon disulfide, if present, can be removed by shaking vigorously for several hours with saturated KOH, separating, and washing with water: this treatment is repeated. The CCl4 is shaken with conc H2SO4 until there is no further coloration, then washed with water, dried with CaCl2 or MgSO4 and distilled (from P2O5 if desired). It must not be dried with sodium. An initial refluxing with mercury for 2hours removes sulfides. Other purification steps include passage of dry CCl4 through activated alumina, and distillation from KMnO4. Carbonyl containing impurities can be removed by percolation through a Celite column impregnated with 2,4-dinitrophenylhydrazine (DNPH), H3PO4 and water. (Prepared by dissolving 0.5g DNPH in 6mL of 85% H3PO4 by grinding together, then mixing with 4mL of distilled water and 10g Celite.) [Schwartz & Parks Anal Chem 33 1396 1961]. Photochlorination of CCl4 has also been used: CCl4 to which a small amount of chlorine has been added is illuminated in a glass bottle (e.g. for 24hours with a 200W tungsten lamp near it), and, after washing out the excess chlorine with 0.02M Na2SO3, the CCl4 is washed with distilled water and distilled from P2O5. It can be dried by passing through 4A molecular sieves and distilled. Another purification procedure is to wash CCl4 with aqueous NaOH, then repeatedly with water and N2 gas is bubbled through the liquid for several hours. After drying over CaCl2 it is percolated through silica gel and distilled under dry N2 before use [Klassen & Ross J Phys Chem 91 3664 1987]. [Beilstein 1 IV 56.]
  • Inkompatibilitäten Oxidative decomposition on contact with hot surfaces, flames, or welding arcs. Carbon tetrachloride decomposes forming toxic phosgene fumes and hydrogen chloride. Decomposes violently (producing heat) on contact with chemically active metals, such as aluminum, barium, magnesium, potassium, sodium, fluorine gas, allyl alcohol, and other substances, causing fire and explosion hazard. Attacks copper, lead, and zinc. Attacks some coatings, plastics, and rubber. Becomes corrosive when in contact with water; corrosive to metals in the presence of moisture.
  • Waste disposal 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. Recover and purify by distillation where possible.
Carbon tetrachloride Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Tetrachlormethan Anbieter Lieferant Produzent Hersteller Vertrieb Händler.
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56-23-5, Carbon tetrachloride Verwandte Suche:
  • Dichloromethane EP Impurity A
  • Carbon tetrachloride( 99.5%, HyDry, Water≤50 ppm (by K.F.))
  • Carbon tetrachloride(99.5%, HyDry, with molecular sieves, Water≤50 ppm (by K.F.))
  • Carbontetrachloride(formII)
  • Carbontetrachloride(formIII)
  • CCl4
  • CCm0
  • Chlorid uhlicity
  • chloriduhlicity
  • Czterochlorek wegla
  • czterochlorekwegla
  • czterochlorekwegla(polish)
  • ENT 27164
  • ENT 4,705
  • ent4,705
  • Fasciolin
  • Flukoids
  • Freon 10
  • freon10
  • Halon 104
  • halon104
  • halon1040
  • halon-1040
  • Katharin
  • Kohlenstofftetrachlorid
  • Methane tetrachloride
  • Methane, tetrachloro-
  • Methane,tetrachloro-
  • methane,tetrachloro-(carbontetrachloride)
  • methanetetrachloride
  • Necatorina
  • Necatorine
  • Phenoxin
  • R 10
  • r10
  • R-10
  • r10(refrigerant)
  • Rcra waste number U211
  • Tetrasol
  • Thawpit
  • Univerm
  • Vermoestricid
  • ALLYLALDEHYDE
  • AKOS BBS-00004228
  • ACROLEIN MONOMER
  • ACRALDEHYDE
  • MAGNACIDE
  • FIXATIVE 15951
  • CARBON TETRACHLORIDE
  • AQUALINE MATRIX K
  • PERCHLOROMETHANE
  • TETRACHLORKOHLENSTOFF
  • TETRACHLOROMETHANE
  • Carbon tetrachloride? flukoids
  • Refrigerant R10
  • CARBON TETRACHLORIDE, FOR UV-SPECTROSCOPY
  • CARBON TETRACHLORIDE, FOR HPLC
  • CARBON TETRACHLORIDE, ANHYDROUS, 99.5+%