Triethyl Orthoformate Cas:122-51-0

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Triethyl Orthoformate

Product Description:

Product Name: Triethyl Orthoformate CAS NO: 122-51-0




Orthoformic Acid Triethyl Ester;

Ethane, 1,1‘,1‘‘-[methylidynetris(oxy)]tris-;


Chemical & Physical Properties:

Appearance: Colorless liquid, with spicy odor

Assay :≥99.0%

Density: 0.891

Boiling Point: 146℃

Melting Point: -61℃

Flash Point: 30℃

Refractive Index: 1.39-1.392

Water Solubility: 1.35 g/L

Sensitive: Moisture sensitive

Stability: Stable under normal temperatures and pressures

Storage Condition: Flammables area

Vapor Density: 5.11 (vs air)

Vapor Pressure: 2.9 mm Hg ( 20℃)


Safety Information:

RTECS: RM6475000

Hazard Class: 3

Safety Statements: S16-S26-S37/39

HS Code: 2915130000

WGK Germany: 1

Packing Group: III


Risk Statements: R10; R36/38

Hazard Code: Xi

Caution Statements: P210; P403 + P235

Symbol: GHS02

Signal Word: Warning

Hazard Declaration: H226


Triethyl orthoformate is an organic compound with the formula HC(OC2H5)3. It is a colorless volatile liquid. It is orthoester of formic acid. Commercially available, the industrial synthesis is from hydrogen cyanide and ethanol.

It may also be prepared from the reaction of sodium ethoxide and chloroform:

CHCl3 + 3 Na + 3 EtOH → HC(OEt)3 + 3⁄2 H2 + 3 NaCl

Triethyl orthoformate is used in the Bodroux-Chichibabin aldehyde synthesis, for example:

RMgBr + HC(OC2H5)3 → RC(H)(OC2H5)2 + MgBr(OC2H5) RC(H)(OC2H5)2 + H2O → RCHO + 2 C2H5OH.

In coordination chemistry, it is used to convert metal aquo complexes to the corresponding ethanol complexes:

[Ni(H2O)6](BF4)2 + 6 HC(OC2H5)3 → [Ni(C2H5OH)6](BF4)2 + 6 HC(O)(OC2H5) + 6 HOC2H5


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