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Triethyl borate

CAS 150-46-9(C2H5O)3BChemical Synthesis

Triethyl borate (CAS: 150-46-9), also known as Boron ethoxide, is a clear, colourless liquid with a molecular weight of 145.99 g/mol. It is primarily utilised as a chemical intermediate and reagent in various synthetic organic chemistry applications. Its properties make it valuable for introducing boron moieties into organic molecules, playing a role in the preparation of boronic acids and esters, which are crucial building blocks in pharmaceutical and material science research.

IUPAC
Boric acid triethyl ester,Boron ethoxide,Triethoxyborane
Synonyms
Boric acid triethyl esterBoron ethoxideTriethoxyborane
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Triethyl borate ((C2H5O)3B) — chemical structure, CAS 150-46-9; Chemistry, fine chemical supplied by Tech Serve Solutions
Chemical SynthesisOrganoboratesOrganometallic Reagents
01 /Applications

Boronic Acid and Ester Synthesis

Triethyl borate serves as a key reagent for the synthesis of boronic acids and esters. These compounds are widely employed in Suzuki-Miyaura cross-coupling reactions, a fundamental tool for carbon-carbon bond formation in drug discovery and fine chemical manufacturing.

Organometallic Reagent

As an organoborate, it functions as an organometallic reagent. This capability allows for its use in various reactions where the controlled introduction of a boron atom is required, facilitating the creation of complex organic structures.

Chemical Synthesis Intermediate

Its reactive nature makes triethyl borate a versatile intermediate in broader chemical synthesis. It is employed in the production of various organic compounds where boron incorporation is a necessary step.

02 /Properties
Molecular weight145.99
Linear formula(C2H5O)3B
Assay99%
Formliquid
Boiling point117-118 °C(lit.)
Density0.858 g/mL at 25 °C(lit.)
Refractive indexn20/D 1.374(lit.)
Vapour density5.04 (vs air)
03 /Safety & handling
GHS hazard pictogram: Flammable (GHS02)
Flammable
Danger

Hazard statements

  • H225Highly flammable liquid and vapour

Precautionary statements

  • P210Keep away from heat, sparks and open flames. No smoking
Protective equipmentEyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point11 °C / 51.8 °F
Transport (UN / ADR)UN 1176 3 / PGII
Water hazard class (WGK, DE)2
Hazard codes (EU)F
Risk statements (R)11
Safety statements (S)7-16-23

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

04 /Identifiers & registry
CAS number
150-46-9
MDL number
MFCD00009073
PubChem substance
24900331
Beilstein registry
1699052
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 Triethyl borate used for?

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Triethyl borate is primarily used as a reagent and intermediate in organic synthesis, particularly for the preparation of boronic acids and esters which are important in cross-coupling reactions, and as a general organoborate reagent.

What is the CAS number and formula for Triethyl borate?

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The CAS number for Triethyl borate is 150-46-9, and its linear formula is (C2H5O)3B.

What grade and purity does Tech Serve Solutions supply?

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Tech Serve Solutions supplies Triethyl borate with an assay of 99%. This product is not represented as USP, BP, EP, or any other pharmacopoeia grade.

How should Triethyl borate be handled safely?

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Triethyl borate is a flammable liquid (H225) and requires careful handling. Use appropriate personal protective equipment including eyeshields, gloves, and a suitable respirator. Store away from ignition sources and in a well-ventilated area.

Is Triethyl borate a controlled substance?

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The provided data does not indicate that Triethyl borate is a controlled substance.

How is Triethyl borate shipped and exported by TSS?

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Tech Serve Solutions is a global supplier and exporter of chemicals, adhering to all relevant shipping and export regulations for hazardous materials like Triethyl borate (UN 1176).

How can I request a quote or sample of Triethyl borate?

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To request a quote or sample of Triethyl borate, please contact our sales team through the website or direct inquiry channels.

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