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Trichlorethylen

Trichloroethylene Struktur
79-01-6
CAS-Nr.
79-01-6
Bezeichnung:
Trichlorethylen
Englisch Name:
Trichloroethylene
Synonyma:
TCE;TRI;TRICHLORETHYLENE;TRICHLOROETHENE;1,1,2-TRICHLOROETHENE;1979/1/6;Triol;C2HCl3;Trichlorethylen;Triad
CBNumber:
CB5406573
Summenformel:
C2HCl3
Molgewicht:
131.39
MOL-Datei:
79-01-6.mol

Trichlorethylen Eigenschaften

Schmelzpunkt:
-86 °C
Siedepunkt:
87 °C
Dichte
1.463 g/mL at 25 °C(lit.)
Dampfdichte
4.5 (vs air)
Dampfdruck
61 mm Hg ( 20 °C)
Brechungsindex
n20/D 1.476(lit.)
Flammpunkt:
90°C
storage temp. 
2-8°C
L?slichkeit
Soluble in acetone, ethanol, chloroform, ether (U.S. EPA, 1985), and other organic solvents including bromoform, carbon tetrachloride, methylene chloride, trichloroethylene, and tetrachloroethylene.
Aggregatzustand
Liquid
Farbe
Clear colorless
Geruch (Odor)
Chloroform-like; ethereal.
Odor Threshold
3.9ppm
Wasserl?slichkeit
Slightly soluble. 0.11 g/100 mL
Merck 
14,9639
BRN 
1736782
Henry's Law Constant
3.14 at 1.8 °C, 8.47 at 21.6 °C, 19.0 at 40.0 °C, 26.5 at 50 °C, 35.8 at 60 °C, 56.6 at 70 °C (EPICS-GC, Shimotori and Arnold, 2003)
Expositionsgrenzwerte
TLV-TWA 50 ppm (~270 mg/m3) (ACGIH), 100 ppm (MSHA and OSHA); TLV-STEL 200 ppm (ACGIH); ceiling 200 ppm (OSHA); carcinogenicity: Animal Lim ited Evidence, Human Inadequate Evidence (IARC).
Dielectric constant
3.4(16℃)
Stabilit?t:
Stable. Incompatible with oxidizing agents, aluminium, magnesium, strong bases, reducing agents. Light-sensitive. Reacts violently with many metals, ozone, potassium nitrate, potassium hydroxide, sodium hydroxide.
LogP
2.53 at 20℃
CAS Datenbank
79-01-6(CAS DataBase Reference)
IARC
1 (Vol. Sup 7, 63, 106) 2014
NIST chemische Informationen
Trichloroethylene(79-01-6)
EPA chemische Informationen
Trichloroethylene (79-01-6)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher T,F
R-S?tze: 45-36/38-52/53-67-68-39/23/24/25-23/24/25-11
S-S?tze: 53-45-61-36/37-16-7
RIDADR  UN 1710 6.1/PG 3
OEB B
OEL TWA: 25.0 ppm, STEL: 2.0 ppm
WGK Germany  3
RTECS-Nr. KX4550000
TSCA  Yes
HazardClass  6.1
PackingGroup  III
HS Code  29032200
Giftige Stoffe Daten 79-01-6(Hazardous Substances Data)
Toxizit?t LD50 orally in rats: 4.92 ml/kg; LC (4 hrs) in rats: 8000 ppm (Smyth)
IDLA 1,000 ppm
Bildanzeige (GHS) GHS hazard pictogramsGHS hazard pictograms
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P302+P352, P321,P332+P313, P362
H317 Kann allergische Hautreaktionen verursachen. Sensibilisierung der Haut Kategorie 1A Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H319 Verursacht schwere Augenreizung. Schwere Augenreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P305+P351+P338,P337+P313P
H336 Kann Schl?frigkeit und Benommenheit verursachen. Spezifische Zielorgan-Toxizit?t (einmalige Exposition) Kategorie 3 (Schl?frigkeit und Benommenheit) Warnung P261, P271, P304+P340, P312,P403+P233, P405, P501
H341 Kann vermutlich genetische Defekte verursachen. Keimzellmutagenit?t Kategorie 2 Warnung P201,P202, P281, P308+P313, P405,P501
H350 Kann Krebs verursachen. Karzinogenit?t Kategorie 1A Achtung GHS hazard pictogramssrc="/GHS08.jpg" width="20" height="20" />
H412 Sch?dlich für Wasserorganismen, mit langfristiger Wirkung. Langfristig (chronisch) gew?ssergef?hrdend Kategorie 3 P273, P501
Sicherheit
P202 Vor Gebrauch alle Sicherheitshinweise lesen und verstehen.
P273 Freisetzung in die Umwelt vermeiden.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P302+P352 BEI BERüHRUNG MIT DER HAUT: Mit viel Wasser/... (Hersteller kann, falls zweckm??ig, ein Reinigungsmittel angeben oder, wenn Wasser eindeutig ungeeignet ist, ein alternatives Mittel empfehlen) waschen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach M?glichkeit entfernen. Weiter spülen.
P308+P313 BEI Exposition oder falls betroffen: ?rztlichen Rat einholen/?rztliche Hilfe hinzuziehen.

Trichlorethylen Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.

PHYSIKALISCHE GEFAHREN

Die D?mpfe sind schwerer als Luft.. Flie?en, Schütten o.?. kann zu elektrostatischer Aufladung führen.

CHEMISCHE GEFAHREN

Bei Kontakt mit hei?en Gegenst?nden oder Flammen Zersetzung unter Bildung giftiger und ?tzender Rauche (Phosgen, Chlorwasserstoff). Zersetzung bei Kontakt mit starken Alkalien unter Bildung von Dichloracetylen. Erh?hte Feuergefahr. Reagiert sehr heftig mit Metallpulvern wie Magnesium, Aluminium, Titan und Barium. Langsame Zersetzung durch Licht bei Anwesenheit von Feuchtigkeit unter Bildung von ?tzender Salzs?ure.

ARBEITSPLATZGRENZWERTE

TLV: 50 ppm (als TWA) 100 ppm (als STEL); Krebskategorie A5 (kein Verdacht auf krebserzeugende Wirkung beim Menschen); BEI vorhanden; (ACGIH 2005).
MAK: Krebserzeugend Kategorie 1; Keimzellmutagen Kategorie 3B; (DFG 2005).

AUFNAHMEWEGE

Aufnahme in den K?rper durch Inhalation und durch Verschlucken.

INHALATIONSGEFAHREN

Beim Verdampfen bei 20 °C kann schnell eine gesundheitssch?dliche Kontamination der Luft eintreten.

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Substanz reizt die Augen und die Haut. Verschlucken kann zur Aufnahme in der Lunge führen; Gefahr der Aspirationspneumonie. M?glich sind Auswirkungen auf das Zentralnervensystem mit nachfolgendem Atemversagen. Exposition kann Bewusstseinstrübung verursachen.

WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

Wiederholter oder andauernder Hautkontakt kann Dermatitis hervorrufen. M?glich sind Auswirkungen auf das Zentralnervensystem. Führt zu Ged?chtnisverlust. M?glich sind Auswirkungen auf Leberund Nieren (s. Anm.). Wahrscheinlich krebserzeugend für den Menschen.

LECKAGE

Belüftung. Ausgelaufene Flüssigkeit m?glichst in abdichtbaren Beh?ltern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen. Pers?nliche Schutzausrüstung: Atemschutzfilter für organische Gase und D?mpfe. NICHT in die Umwelt gelangen lassen.

R-S?tze Betriebsanweisung:

R45:Kann Krebs erzeugen.
R36/38:Reizt die Augen und die Haut.
R52/53:Sch?dlich für Wasserorganismen, kann in Gew?ssern l?ngerfristig sch?dliche Wirkungen haben.
R67:D?mpfe k?nnen Schl?frigkeit und Benommenheit verursachen.
R68:Irreversibler Schaden m?glich.
R39/23/24/25:Giftig: ernste Gefahr irreversiblen Schadens durch Einatmen, Berührung mit der Haut und durch Verschlucken.
R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.

S-S?tze Betriebsanweisung:

S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.

Beschreibung

Trichloroethylene (IUPAC), CHClCCl2, is a stable, low-boiling, colorless liquid with a chloroform-like odor. It is not corrosive to the common metals even in the presence of moisture. It is slightly soluble in water and is nonflammable. It is toxic by inhalation, with a TLV of 50 ppm and an IDLH of 1000 ppm in air. The FDA has prohibited its use in foods, drugs, and cosmetics. The four-digit UN identification number is 1710. The NFPA 704 designation is health 2, flammability 1, and reactivity 0. Its primary uses are in metal degreasing, dry cleaning, as a refrigerant and fumigant, and for drying electronic parts.

Chemische Eigenschaften

Trichloroethylene, a colorless (often dyed blue), nonflammable, noncorrosive liquid that has the “sweet” odor characteristic of some chlorinated hydrocarbons. The Odor Threshold is 25-50 ppm.

Physikalische Eigenschaften

Clear, colorless, watery-liquid with a chloroform-like odor. Odor threshold concentrations determined in air were 21.4 ppmv (Leonardos et al., 1969) and 3.9 ppmv (Nagata and Takeuchi, 1990). The average least detectable odor threshold concentrations in water at 60 °C and in air at 40 °C were 10 and 2.6 mg/L, respectively (Alexander et al., 1982).

Verwenden

Trichloroethylene is used as a solvent, in drycleaning, in degreasing, and in limited use asa surgical anesthetic.

Vorbereitung Methode

TCE has been in commercial use for almost 60 years. TCE has been used as a solvent because of its powerful ability to dissolve fats, greases, and waxes. It has been widely used in the dry cleaning industry and as a metal degreaser and in the electronic components industry where workers have been observed using it as a cleaning solvent without any protective equipment, thus allowing uncontrolled skin contact and inhalation exposures.

Definition

ChEBI: A member of the class of chloroethenes that is ethene substituted by chloro groups at positions 1, 1 and 2.

Allgemeine Beschreibung

A clear colorless volatile liquid having a chloroform-like odor. Denser than water and is slightly soluble in water. Noncombustible. Used as a solvent, fumigant, in the manufacture of other chemicals, and for many other uses.

Air & Water Reaktionen

Slightly soluble in water.

Reaktivit?t anzeigen

Trichloroethylene has been determined experimentally that mixtures of finely divided barium metal and a number of halogenated hydrocarbons possess an explosive capability. Specifically, impact sensitivity tests have shown that granular barium in contact with monofluorotrichloromethane, trichlorotrifluoroethane, carbon tetrachloride, Trichloroethylene, or tetrachloroethylene can detonate (ASESB Pot. Incid. 39. 1968; Chem. Eng. News 46(9):38. 1968). Trichloroethylene has been determined experimentally that a mixture of beryllium powder with carbon tetrachloride or with Trichloroethylene will flash or spark on heavy impact (ASESB Pot. Incid. 39. 1968). A mixture of powdered magnesium with Trichloroethylene or with carbon tetrachloride will flash or spark under heavy impact (ASESB Pot. Incid, 39. 1968).

Health Hazard

The toxic effects manifested in humansfrom inhaling trichloroethylene vapors areheadache, dizziness, drowsiness, fatigue, andvisual disturbances. A 2-hour exposure to a1000-ppm concentration affected the visualperception. Higher concentrations can pro duce narcotic effects. Heavy exposures maycause death due to respiratory failure or car diac arrest. A 4-hour exposure to 8000 ppmwas lethal to rats. Chronic exposure causedincrease in kidney and liver weights in testanimals.
The symptoms of poisoning from oralintake of trichloroethylene are nausea, vom iting, diarrhea, and gastric disturbances. Theacute oral toxicity, however, is low. Theoral LD50 value in mice is in the range2500 mg/kg. Trichloroethylene metabolizesto trichloroacetic acid, which is excreted inthe urine.
Although trichloroethylene exhibits lowtoxicity, its metabolite trichloroethanol, andoxidative degradation products phosgene,COCl2, and chlorine, can cause severe unex pected health hazards. Kawakami andassociates (1988) reported a case of Steven–Johnson syndrome in a worker in a printingfactory. In another case, fire on a stove in ametal-degreasing workplace produced phos gene and chlorine inhalation, which causeddyspnea, fever, and fatigue.
Trichloroethylene exhibited evidence ofcarcinogenicity in laboratory animals. Oraladministration produced liver tumors, whileinhalation caused lung and blood tumors inmice and rats.

Brandgefahr

Special Hazards of Combustion Products: Toxic and irritating gases are produced in fire situations.

Chemische Reaktivit?t

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.

Kontakt-Allergie

Trichloroethylene is a chlorinated hydrocarbon used as a detergent or solvent for metals, oils, resins, sulfur, and as general degreasing agent. It can cause irritant contact dermatitis, generalized exanthema, Stevens-Johnson- like syndrome, pustular or bullous eruption, scleroderma, as well as neurological and hepatic disorders.

m?gliche Exposition

Trichloroethylene is used as a vapor degreaser of metal parts, as a solvent; and as a drug; It is also used for extracting caffeine from coffee, as a dry-cleaning agent; and as a chemical intermediate in the production of pesticides; in making waxes, gums, resins, tars, paints, varnishes, and specific chemicals; such as chloroacetic acid.

Carcinogenicity

Trichloroethylene is reasonably anticipated to be a human carcinogen based on limited evidence of carcinogenicity from studies in humans, sufficient evidence of carcinogenicity from studies in experimental animals, and information from studies on mechanisms of carcinogenesis.

Stoffwechselwegen

From the photooxidation reaction medium (1) of trichloroethylene, the formation of dichloroacetyl chloride, CO, phosgene, and pentachloroethane and their conversion to the final product, CO2, are identified. By the second TiO2 photocatalyst reaction (2), trichloroacetaldehyde, dichloroacetyl chloride, CO, and phosgene with the new identified intermediates oxalyl chloride, trichloroacetyl chloride, and trichloroacetic acid are observed.

Versand/Shipping

UN1710 Trichloroethylene, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.

l?uterung methode

Tricloroethylene undergoes decomposition in a similar way as CHCl3, giving HCl, CO, COCl2 and organic products. It reacts with KOH, NaOH and 90% H2SO4, and forms azeotropes with water, MeOH, EtOH, and acetic acid. It is purified by washing successively with 2M HCl, water and 2M K2CO3, then dried with K2CO3 and CaCl2, then fractionally distilled before use. It has also been steam distilled from 10% Ca(OH)2 slurry, most of the water being removed from the distillate by cooling to -30o to -50o and filtering off the ice through chamois skin: the trichloroethylene is then fractionally distilled at 250mm pressure and collected in a blackened container. [Carlisle & Levine Ind Eng Chem (Anal Ed) 24 1164 1932, Beilstein 1 IV 712.]

Inkompatibilit?ten

Contact with strong caustics causes decomposition and the production of highly toxic and flammable dichloroacetylene. Violent reaction with chemically active metals; powders, or shavings, such as aluminum, barium, lithium, sodium, magnesium, and titanium. Violent reaction with aluminum in the presence of dilute hydrochloric acid. Thermal decomposition of trichloroethylene, due to contact with hot metal or UV radiation, forms hazardous products including chlorine gas, hydrogen chloride; and phosgene. Keep this chemical away from high temperatures, such as arc welding or cutting, unshielded resistance heating; open flames; and high intensity UV light. Slowly decomposed by light in presence of moisture, with formulation of hydrochloric acid.

Waste disposal

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. 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. An alternative to disposal for TCE is recovery and recycling.

Trichlorethylen Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Trichlorethylen Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 494)Lieferanten
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BLiT (Hefei)Chemical Co.,Ltd
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+8619521488211
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