Triethylene glycol

Bezeichnung:Triethylene glycol

CAS-Nr112-27-6

Englisch Name:Triethylene glycol

CBNumberCB1698903

SummenformelC6H14O4

Molgewicht150.17

MOL-Datei112-27-6.mol

Synonyma

2,2'-(1,2-Ethandiyldi(oxy))diethanol

2,2'-(Ethylendioxy)diethanol

Triglykol

Triethylene glycol physikalisch-chemischer Eigenschaften

Schmelzpunkt	−7 °C(lit.)
Siedepunkt	125-127 °C0.1 mm Hg(lit.)
Dichte	1.124 g/mL at 20 °C(lit.)
Dampfdichte	5.2 (vs air)
Dampfdruck	<0.01 mm Hg ( 20 °C)
Brechungsindex	n20/D 1.455(lit.)
Flammpunkt	165 °C
storage temp.	Store below +30°C.
Löslichkeit	H₂O: 50 mg/mL at 20 °C, clear, colorless
pka	14.06±0.10(Predicted)
Aggregatzustand	Viscous Liquid
Farbe	Clear very slightly yellow
Geruch (Odor)	Very mild, sweet.
PH	5.5-7.0 (25℃, 50mg/mL in H2O)
Explosionsgrenze	0.9-9.2%(V)
Wasserlöslichkeit	SOLUBLE
Sensitive	Hygroscopic
maximale Wellenlänge (λmax)	λ: 260 nm Amax: 0.06 λ: 280 nm Amax: 0.03
Merck	14,9670
BRN	969357
Dielectric constant	2.4（25℃）
Stabilität	Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey	ZIBGPFATKBEMQZ-UHFFFAOYSA-N
LogP	-1.75 at 25℃
CAS Datenbank	112-27-6(CAS DataBase Reference)
NIST chemische Informationen	Triethylene glycol(112-27-6)
EPA chemische Informationen	Triethylene glycol (112-27-6)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	26-36
WGK Germany	1
RTECS-Nr.	YE4550000
Selbstentzündungstemperatur	699 °F
TSCA	Yes
HS Code	29094919
Giftige Stoffe Daten	112-27-6(Hazardous Substances Data)
Toxizität	LD50 in mice, rats (g/kg): 21, 15-22 orally; 7.3-9.5, 11.7 i.v. (Stenger)

Gefahreninformationscode (GHS)

Triethylene glycol Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
HYGROSKOPISCHE FARBLOSE FLüSSIGKEIT.
ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).
MAK: 1000 mg/m? Spitzenbegrenzung: überschreitungsfaktor II(2); Schwangerschaft: Gruppe C (DFG 2008).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation der Dämpfe.
INHALATIONSGEFAHREN
Beim Verdampfen bei 20°C tritt eine gesundheitsschädliche Kontamination der Luft nicht oder nur sehr langsam ein
LECKAGE
Ausgelaufene Flüssigkeit möglichst in abdichtbaren Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen.
R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
Triethylene glycol is a clear, colorless, viscous, stable liquid with a slightly sweetish odor. Soluble in water; immiscible with benzene, toluene, and gasoline. Combustible. Because it has two ether and two hydroxyl groups its chemical properties are closety related to ethers and primary alcohols. It is a good solvent for gums, resins, nitrocellulose, steam-set printing inks and wood stains. With a low vapor pressure and a high boiling point, its uses and properties are similar to those of ethylene glycol and diethylene glycol. Because it is an efficient hygroscopic agent it serves as a liquid desiccant for removing water from natural gas. It is also used in air conditioning systems designed to dehumidify air.
Verwenden
In various plastics to increase pliability; in air disinfection.
Verwenden
Triethylene glycol is used as a plasticizer, as an additive for hydraulic fluids and brake fluids, and as a disinfectant. It is an active component of certain pigments, printing dyes, inks and paste. It finds application as a liquid desiccant and used in the dehydration of natural gas, carbon dioxide, hydrogen sulfide and air conditioning systems. It plays as an important role in anti-freeze and de-icing products, cleaning and furnishing care products, lubricant and greases.
Verwenden
triethylene glycol is a solvent prepared from ethylene oxide and ethylene glycol.
Triethylene glycol can be used:
To prepare fatty acid gelators, which are used to gelate various edible and vegetable oils.
As a solvent to prepare superparamagnetic iron oxide nanoparticles for in situ protein purification.
As an absorbent agent in the subsea natural gas dehydration process.
Vorbereitung Methode
Triethylene glycol, like diethylene glycol, is produced commercially as a by-product of ethylene glycol production. Its formation is favored by a high ethylene oxide to water ratio.
Definition
ChEBI: Triethylene glycol is a poly(ethylene glycol) that is octane-1,8-diol in which the carbon atoms at positions 3 and 6 have been replaced by oxygen atoms. It has a role as a plasticiser. It is a poly(ethylene glycol), a diol and a primary alcohol.
Allgemeine Beschreibung
Triethylene Glycol (TEG) is a colorless liquid with a mild odor and is denser than water. It is a member of a series of dihydroxyalcohols. TEG's primary applications are derived from its ability to absorb moisture. It is utilized as a dehydrating agent in natural gas pipelines to eliminate water from the gas before reusing it in the system. Triethylene glycol also has mild disinfectant qualities and, when volatised, is used as an air disinfectant for virus and bacteria control.
Reaktivität anzeigen
Triethylene glycol is a ether-alcohol derivative. The ether being relatively unreactive. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert alcohols to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides. Reacts with strong oxidants. [Handling Chemicals Safely 1980. p. 932].
Health Hazard
Under normal conditions of use, Triethylene Glycol (TEG) is not expected to cause irritation to the skin, eyes or respiratory tract. However, in applications where vapours or mists are created, inhalation may cause irritation to the respiratory system.
No ceiling on worker exposure has been set by the American Conference of Governmental Hygienists (ACGIH), neither has a Workplace Exposure Limit been established for TEG. TEG is readily biodegradable, has a low potential to bioaccumulate and has low toxicity to aquatic organisms.
TEG is not flammable, unless preheated.
Flammability and Explosibility
Not classified
Sicherheitsprofil
Poison by intravenous route. Mildly toxic to humans by ingestion. Experimental reproductive effects. An eye and skin irritant. Many glycol ether compounds have dangerous human reproductive effects. Combustible when exposed to heat or flame. Can react with oxidizing materials. Explosive in the form of vapor when exposed to heat, flame, or spark. To fight fire, use alcohol foam, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS and GLYCOL ETHERS.
läuterung methode
Dry the glycol with CaSO4 for 1 week, then it is repeatedly and very slowly fractionally distilled under a vacuum. Store it in a vacuum desiccator over P2O5. It is very hygroscopic. [Beilstein 1 IV 2400.]

Triethylene glycol Upstream-Materialien And Downstream Produkte

Triethylene glycol Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

112-27-6, Triethylene glycol Verwandte Suche:

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