Triethylorthoformiat 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.
Allgemeine Beschreibung
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.
Hazard
Flammable, moderate fire risk.
Health Hazard
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: 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.
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 it 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 (p 11). [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.
Triethylorthoformiat Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Ethyl-1,2,3,4-tetrahydro-2,4-dioxopyrimidin-5-carboxylat
Ethyl 2-hydroxy-4-methyl-5-pyrimidinecarboxylate
2-AMINO-6-CHLORO-3,5-DICYANOPYRIDINE
ETHYL 2-HYDROXY-4-PHENYLPYRIMIDINE-5-CARBOXYLATE
4, 6-DIHYDROXYNICOTINIC ACID ETHYL ESTER
(Chlormethyl)triethoxysilan
4(3H)-Pyrimidinone, 5-methyl-2-(methylthio)-
1-CHLORO-4-ISOCYANOBENZENE
3-(1,3,4-OXADIAZOL-2-YL)PYRIDINE
1-CYCLOHEXYLURACIL
METHYL 5-AMINOISOXAZOLE-4-CARBOXYLATE
2,4-DIAMINOPYRIMIDINE-5-CARBOXYLIC ACID
2-AMINO-3,5-DICYANOPYRIDINE
Ethyl 4-amino-2-(ethylthio)-5-pyrimidinecarboxylate
2,4-DIAMINOPYRIMIDINE-5-CARBONITRILE
4-Methylpyrimidin
3-(2-FLUOROBENZYL)THIENO[2,3-D]PYRIMIDIN-4(3H)-ONE
ETHYL 4-HYDROXY-6-(TRIFLUOROMETHYL)QUINOLINE-3-CARBOXYLATE
4-Chlor-7-(trifluormethyl)chinolin
3-Amino-1H-pyrazol-4-carbonsure
ETHYL 2-(ETHYLTHIO)-4-HYDROXYPYRIMIDINE-5-CARBOXYLATE
4-AMINO-2-(METHYLTHIO)PYRIMIDINE-5-CARBONITRILE
1H-Imidazol-4,5-dicarbonitril
ETHYL(Z)-2-CYANO-3-ETHOXY-2-PROPENOATE
Ethoxylated
1-Cyclohexyl-1,2,3,4-tetrahydro-2,4-dioxopyrimidine-5-carbonitrile ,97%
ETHYL 3-(TRIFLUOROMETHYL)PYRAZOLE-4-CARBOXYLATE
4-AMINO-2-(ETHYLTHIO)-5-(HYDROXYMETHYL)PYRIMIDINE
ETHYL 4-CHLORO-6-(TRIFLUOROMETHYL)-3-QUINOLINECARBOXYLATE
Ethyl-N-formylglycinat
1-(4-METHYL-2-(METHYLTHIO)PYRIMIDIN-5-YL)ETHANONE
4-HYDROXY-5,7-BIS-TRIFLUOROMETHYL-QUINOLINE-3-CARBOXYLIC ACID ETHYL ESTER
2-HYDROXY-4-METHYLPYRIMIDINE-5-CARBOXYLIC ACID
4-Acetylphenylboronic acid
2-Formylfuran-5-boronic acid
Diethoxymethylacetat
Estazolam
Ethyl-5-amino-1-phenyl-1H-pyrazol-4-carboxylat
2-HYDROXY-4-PHENYLPYRIMIDINE-5-CARBOXYLIC ACID
5-Amino-1-phenyl-1H-pyrazol-4-carbonitril
