Tetraethyl orthocarbonate

CAS 78-09-1C(OC2H5)4Chemical Synthesis

Tetraethyl orthocarbonate (CAS: 78-09-1), with the molecular formula C(OC2H5)4 and a molecular weight of 192.25 g/mol, is a valuable organic building block. This ortho ester is a colourless liquid with a refractive index of 1.392 and a boiling point of 159 °C. It serves as a key intermediate in various chemical synthesis processes, particularly in organic chemistry and the production of specialty chemicals.

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Tetraethyl orthocarbonate (C(OC2H5)4) — chemical structure, CAS 78-09-1; Chemistry, fine chemical supplied by Tech Serve Solutions

Acetals/Ketals/Ortho EstersBuilding BlocksChemical SynthesisOrganic Building BlocksOxygen Compounds

01 /Applications

Organic Synthesis Intermediate

Tetraethyl orthocarbonate is utilised as a versatile intermediate in organic synthesis. Its reactivity allows for the introduction of specific functional groups in complex molecular structures.

Building Block for Specialty Chemicals

This compound functions as a building block in the synthesis of various specialty chemicals. It is employed in reactions that require the formation of specific carbon-oxygen bonds.

Reagent in Chemical Research

Researchers utilise Tetraethyl orthocarbonate in laboratory settings for its properties as an ortho ester. It is instrumental in developing new synthetic methodologies and exploring novel chemical transformations.

02 /Properties

Molecular weight	192.25
Linear formula	C(OC2H5)4
Assay	97%
Boiling point	159 °C(lit.)
Density	0.919 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.392(lit.)

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

Warning

Hazard statements

H226Flammable liquid and vapour

Protective equipment	Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	53 °C / 127.4 °F
Transport (UN / ADR)	UN 3272 3 / PGIII
Water hazard class (WGK, DE)	3
Risk statements (R)	10

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

78-09-1

MDL number

MFCD00009221

PubChem substance

24886851

Beilstein registry

1747401

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Tetraethyl orthocarbonate used for?

Tetraethyl orthocarbonate is used as an intermediate in organic synthesis and as a building block for specialty chemicals and in chemical research.

What are the CAS number and formula for Tetraethyl orthocarbonate?

The CAS number for Tetraethyl orthocarbonate is 78-09-1 and its molecular formula is C(OC2H5)4.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Tetraethyl orthocarbonate with an assay of 97%. This product is suitable for research and technical applications. TSS does not represent this product as USP, BP, or EP grade.

What are the primary safety hazards associated with Tetraethyl orthocarbonate?

Tetraethyl orthocarbonate is a flammable liquid and vapour (H226). Handle with appropriate personal protective equipment, including eyeshields, gloves, and suitable respiratory protection, in a well-ventilated area.

How is Tetraethyl orthocarbonate packed and shipped?

Tetraethyl orthocarbonate is packed and shipped according to international regulations for hazardous materials, including UN 3272, Class 3, Packing Group III.