Triethylorthoformiat

Bezeichnung:Triethylorthoformiat

CAS-Nr122-51-0

Englisch Name:Triethyl orthoformate

CBNumberCB4126252

SummenformelC7H16O3

Molgewicht148.2

MOL-Datei122-51-0.mol

Synonyma

Triethylorthoformiat

Triethylorthoformiat physikalisch-chemischer Eigenschaften

Schmelzpunkt	-76 °C (lit.)
Siedepunkt	146 °C (lit.)
Dichte	0.891 g/mL at 25 °C (lit.)
Dampfdichte	5.11 (vs air)
Dampfdruck	2.9 mm Hg ( 20 °C)
Brechungsindex	n20/D 1.391(lit.)
Flammpunkt	86 °F
storage temp.	Flammables area
Löslichkeit	Chloroform (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly)
Aggregatzustand	Liquid
Farbe	Clear colorless
Wasserlöslichkeit	1.35 g/L
Sensitive	Moisture Sensitive
Merck	14,6884
BRN	605384
Stabilität	Moisture Sensitive
InChIKey	GKASDNZWUGIAMG-UHFFFAOYSA-N
LogP	1.2 at 20℃
CAS Datenbank	122-51-0(CAS DataBase Reference)
NIST chemische Informationen	Ethyl orthoformate(122-51-0)
EPA chemische Informationen	Ethyl orthoformate (122-51-0)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	10-36-36/38
S-Sätze:	16-26-37/39-36-45-36/39
RIDADR	UN 2524 3/PG 3
WGK Germany	1
RTECS-Nr.	RM6475000
F	21
TSCA	Yes
HazardClass	3
PackingGroup	III
HS Code	29159080
Toxizität	LD50 orally in rats: 7.06 g/kg (Smyth)

Gefahreninformationscode (GHS)

Triethyl orthoformate Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R10:Entzündlich.
R36:Reizt die Augen.
R36/38:Reizt die Augen und die Haut.
S-Sätze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
Colorless liquid; pungent odor. Highly flammable. Slightly soluble in water; soluble in alcohol, ether; decomposes in water.
Verwenden
Triethyl orthoformate is used in Bodroux-Chichibabin aldehyde synthesis to prepare an aldehyde with one carbon higher by reacting with Grignard reagent. It is also used in the electrophilic formylation of activated aromatic species such as phenol.
Application
Sweet, somewhat camphoraceous-herbaceous odor with a Fimecdle-like note. Triethyl orthoformate has been suggested for use in industrial fragrances for masking, etc. and may find some application in that field. It tends to lift the odor of the conventional components of a pine fragrance and increase the radiation, an effect often desirable for masking purposes.
Allgemeine Beschreibung
Triethyl orthoformate is a clear, colorless liquid with a pungent odor. Less dense than water. Flash point 86°F. Vapors heavier than air. May irritate skin and eyes. Used to make other chemicals.
Reaktivität anzeigen
Triethyl orthoformate is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides.
Health Hazard
Triethyl orthoformate may cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Brandgefahr
HIGHLY FLAMMABLE: Triethyl orthoformate will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Flammability and Explosibility
Flammable
Sicherheitsprofil
Moderately toxic by ingestion. Mddly toxic by inhalation, skin contact, and subcutaneous routes. A skin and eye irritant. A very dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidzing materials. To fight fire, use foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS.
läuterung methode
Fractionate triethyl orthoformate first at atmospheric pressure, then in a vacuum. If impure, then shake it with aqueous 2% NaOH, dry it with solid KOH and distil it from sodium through a 20cm Vigreux column (p 11). Alternatively, wash it with H2O, dry it over anhydrous K2CO3, filter and fractionate it through a Widmer column. [Sah & Ma J Am Chem Soc 54 2964 1932, Ohme & Schmitz Justus Liebigs Ann Chem 716 207 1968, Beilstein 2 IV 25.] IRRITANT and FLAMMABLE.

Triethyl orthoformate Upstream-Materialien And Downstream Produkte

Triethylorthoformiat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

122-51-0, Triethyl orthoformate Verwandte Suche:

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